Satisfactory Test-retest Reliability Research Articles

Translation, reliability, and validity of the German version of the Activity Patterns Scale (APS) in musculoskeletal pain: a methodological study.

In musculoskeletal pain (MSP), pain duration, disability, and mental health relate to how a person engages in daily activities. The self-reporting questionnaire Activity Patterns Scale (APS) assesses these activity patterns and their subscales: Pacing (Pacing to increase activity levels,Pacing to conserve energy for valued activities,Pacing to reduce pain); Avoidance (Pain avoidance,Activity avoidance); Pacing (Excessive persistence, Task-contingent persistence, Pain-contingent persistence). This investigation translated the APS into German and estimated its internal consistency, test-retest reliability, and construct validity. The APS translation was conducted following international guidelines for the transcultural adaptation of self-reported measures. For the construct validity, the Avoidance Endurance Fast-Screening (AE-FS), Tampa Scale of Kinesiophobia (TSK), and Coping Strategies Questionnaires (CSQ) scales were employed. Sixty-five participants with MSP contributed to a baseline survey with a follow-up at two weeks. The German version of the APS subscales demonstrated good internal consistency (Cronbach's alpha = 0.670-0.89) and satisfactory test-retest reliability (intraclass correlation coefficient = 0.72-0.82); only Task-contingent persistence revealed a poor result. Construct validity was supported by significant correlations between APS subscales (pacing, avoidance, persistence) with related measures, including the Coping Strategies Questionnaire (0.27 to 0.40; -0.50 to 0.55; 0.27 to 0.50), the Tampa Scale for Kinesiophobia (0.28 to 0.47; 0.36 to 0.37; 0.38), and Avoidance-Endurance Fast Screening Pain Persistence Scale (none; none; 0.40). The findings demonstrate high construct validity by the substantial correlations in the predicted directions for the APS subscales and their corresponding questionnaires. The German version of the APS is a reliable and valid tool for assessing activity pattern subscales in individuals with MSP. This distinction could refine research and customize treatment instructions to regulate people's activity in clinical practice.

Patient-reported outcome measures for medication treatment satisfaction: a systematic review of measure development and measurement properties

BackgroundMedication Treatment Satisfaction (M-TS) from the patients’ perspective is important for comprehensively evaluating the effect of medicines. The extent to which current patient-reported outcome measures (PROMs) for M-TS are valid, reliable, responsive, and interpretable remains unclear. To assess the measurement properties of existing PROMs for M-TS and to highlight research gaps.MethodsUsing PubMed, Embase (Ovid), Cochrane library (Ovid), IPA (Ovid), PsycINFO, Patient-Reported Outcome and Quality of Life Questionnaires biomedical databases, and four Chinese databases, we performed a systematic search for studies addressing the development and validation of PROMs for M-TS. Based on the Consensus-based Standards for the selection of health Measurement Instruments (COSMIN) guideline, pairs of reviewers independently assessed the measurement properties of the PROMs and rated the quality of evidence on the measurement properties of each PROM. (The Open Science Framework registration: https://doi.org/10.17605/OSF.IO/8S5ZM).ResultsThis review identified 69 PROMs for M-TS in 114 studies (four generic, 32 disease-specific, and 33 drug-specific) of which 60 were intended for adults. All provided limited or no information regarding interpretability. Most demonstrated appropriate construct validity including convergent validity (39/69) and discriminative or known-groups validity (40/69) (high to moderate quality of evidence). Only a few provided evidence of sufficient content validity (8/69), structural validity (13/69), and internal consistency (11/69). Of 38 PROMs reporting test–retest reliability, results in 24 provided evidence of satisfactory test–retest reliability (18 with high to moderate, 6 with low to very low quality of evidence). Few PROMs reported responsiveness (16/69). Two generic PROMs (Treatment Satisfaction Questionnaire for Medication initial Version 1.4, TSQM-1.4; Treatment Satisfaction with Medicines Questionnaire, SATMED-Q) and one drug-specific PROM (Insulin Treatment Satisfaction Questionnaire, ITSQ) demonstrated both satisfactory validity and reliability.ConclusionsMost existing PROMs for M-TS require further exploration of measurement properties. Reporting guidelines are needed to enhance the reporting quality of the development and validation of PROMs for M-TS.

Measuring Public Attitudes Toward Stuttering: Test-retest Reliability Revisited

Purpose: Previous studies of the Public Opinion Survey of Human Attributes-Stuttering (POSHA-S), using test and retest designs in modest-sized samples, have reported satisfactory test-retest reliability, i.e., correlations of about 0.80. Simultaneously, lower but moderate correlations between different first and second test respondents were observed and hypothesized to represent unspecified “societal” influences on stuttering attitudes. This study sought to clarify this and other potential relationships between first and second tests with the POSHA-S in a large, geographically and linguistically diverse sample.Methods: POSHA-S Overall Stuttering Scores (OSSs) of 345 respondents from 12 test-retest samples from four countries and languages, with no intervening interventions, were analyzed with correlations and by grouping respondents according to whose stuttering attitudes improved, remained the same, or worsened from test to retest.Results: Test and retest OSSs generally conformed to normal distributions and were not significantly different. Correlations between first versus second tests replicated earlier research. However, when the degree and direction of change from test to retest was considered, both in other correlations and in sorts of respondents, unexpected results emerged. Respondents with intermediate attitudes changed minimally, while those with most and least positive attitudes at the first test changed in opposite directions past the overall mean at second test.Conclusions: While demonstrating adequate test-retest reliability correlations on the POSHA-S, public attitudes were found to be less stable than previously assumed.

Preliminary validation of the Norwegian version of the Berlin Misophonia Questionnaire Revised (BMQ-R-NOR).

To perform a psychometric evaluation of a Norwegian version of the Berlin Misophonia Questionnaire Revised (BMQ-R-NOR). Participants completed online versions of the self-report questionnaire BMQ-R-NOR on two occasions and MQ-NOR on one occasion. Convergent validity was assessed through Spearman's correlation between BMQ-R-NOR and MQ-NOR. Internal consistency was evaluated with McDonald's omega and Cronbach's alpha. Test-retest reliability was evaluated using Cohen's weighted kappa and intraclass correlation. 82 participants with self-reported misophonia took part in the study at T1, and 53 of these participated at T2. However, only 41 of them were included in the test-retest analyses due to 12 participants being in treatment between T1 and T2. Subscales from the BMQ-R-NOR and MQ-NOR were significantly positively correlated, indicating evidence of convergent validity (rs = 0.22*-0.74**). The BMQ-R-NOR showed overall good internal consistency (omega = 0.72-0.93; alpha = 0.70-0.93) and satisfactory test-retest reliability (ICC = 0.35-0.92). The psychometric properties of the BMQ-R-NOR are considered satisfactory. However, it is advised to exercise caution when using it until further comprehensive validation studies are conducted to ensure robustness and reliability in clinical practice.

Initial Validation of the Coach-Athlete Relationship Questionnaire in a Sample of Portuguese Athletes.

Our primary objectives in this study were to translate and provide psychometric support for the Coach Athlete Relationship Questionnaire (CART-Q) Portuguese version, assess its invariance across sex, and explore its nomological validity in relation to enjoyment. Our sample participants were 470 athletes (226 females, 244 males) aged between 16 to 39 years from various individual and team sports. We found that the translated Portuguese version of the CART-Q exhibited satisfactory test-retest reliability and can serve as a reliable tool for evaluating the core constructs of the coach-athlete relationship - closeness, commitment, and complementarity. Moreover, this instrument showed evidence of nomological validity through significant positive correlations between its underlying factors and athletes' enjoyment with their sport. The proposed model for explaining item variance was also found to be invariant between male and female respondents. We recommend further use of this instrument in research and practical applications.

Gender differences in concussion-related knowledge, attitudes and reporting behaviors of varsity athletes.

Concussion is a pathophysiological process that occurs due to a traumatic biomechanical force. Concussions are an "invisible" and common traumatic brain injury with symptoms that may be underestimated. This necessitates fundamental improvements in public knowledge specifically addressing young university athletes and different genders. This cross-sectional study aimed to explore the possibility of gender differences with respect to university student athletes' concussion knowledge, attitude and reporting behaviors. We hypothesized that there should be no significant difference in concussion knowledge among male and female student athletes; however, females would show a more positive attitude and more reporting behaviors than male student athletes. Overall, 115 university athlete students completed a survey questionnaire; we eliminated some participants based on required inclusion criteria of Rosenbaum Concussion Knowledge and Attitude Survey-student version (RoCKAS-ST). Our final analysis consisted of 96 participants: 20 males (mean age 21.15 years) and 75 females (mean age 22.36 years). This study included questions about the athletes' given reasons for reporting or not reporting a concussion. Additionally, 33 RoCKAS-ST questions on Concussion Knowledge Index (CKI) with fair test-retest reliability (r=0.67) and 15 items on Concussion Attitude Index (CAI) with satisfactory test-retest reliability (r=0.79) were provided. Males reported more sources for learning about concussions and more sport-related reasons for reporting a concussion than females (P<0.05). Both genders provided equal numbers of reasons for neglecting a concussion report or not disclosing a concussion for the sake of others (i.e., family, teammates or the coach). Out of 16 given reasons for not reporting a concussion, males significantly chose sport-related reasons over female athletes (P<0.05). Additionally, by looking at the two components of RoCKAS-ST, the independent t-test results showed no significant gender-based differences in concussion knowledge and attitude indices (P>0.05). Nevertheless, females were less optimistic about evaluating other athletes' attitude over concussion reporting (P<0.05). Our study indicated that concussion knowledge is not gender biased among Canadian university athletes; however, more investigation is required to learn how safe environments for concussion disclosure could encourage reporting the symptoms in varsity athletes, especially in males who are more susceptible to not reporting a concussion to not miss their sport-related goals.

Psychometric evaluation of the respiratory syncytial virus infection, intensity and impact questionnaire (RSV-iiiQ) in adults

BackgroundDespite a number of respiratory syncytial virus (RSV) vaccine candidates being tested in clinical trials, disease-specific, self-reported instruments assessing symptom severity of RSV infection from the perspective of adult patients are still needed. The RSV Infection, Intensity and Impact Questionnaire (RSV-iiiQ) was adapted from the Influenza Intensity and Impact Questionnaire (FluiiQ™). This study evaluated some measurement properties of the RSV-iiiQ.MethodsData were collected in a web-based survey over two consecutive days. Participants completed the RSV-iiiQ, the Patient Global Impression of Severity, Sheehan Disability Scale, Patient Global Impression of Change, EQ-5D-5L, and a demographic questionnaire. Test-retest reliability, internal consistency, construct validity, and responsiveness of the RSV-iiiQ scales were assessed.Results111 adults with RSV were enrolled and self-reported a variety of symptoms across the range of disease severity via a web-based platform. The RSV-iiiQ scales demonstrated satisfactory test-retest reliability, construct validity, and discriminating ability. One-factor confirmatory factor analyses confirmed that each of the four scales was sufficiently unidimensional, and internal consistencies indicated that the computation of RSV-iiiQ scale scores was plausible. Correlation-based analyses provided support for the construct validity of the RSV-iiiQ scores, and known groups analyses supported discriminating ability. Estimates of responsiveness of the scale scores were also satisfactory.ConclusionsRSV infection is highly symptomatic and causes significant disease burden, and self-report instruments assessing symptom severity and impact are important for evaluation of new treatments. This study describes the preliminary psychometric properties of the RSV-iiiQ and indicates this tool may be useful for the assessment of the severity of symptoms and impact of acute RSV infection in adults. The findings also indicated two items, Runny nose and Ear pain, may be unnecessary and should be revisited using item response theory analysis with a larger sample size.

Face validity and reliability test of the Danish version of the compliance questionnaire rheumatology in patients with early rheumatoid arthritis

BackgroundSupporting adherence to medication is an essential part of the treatment and care of patients with rheumatic and musculoskeletal diseases. The Compliance Questionnaire Rheumatology (CQR) measures adherence in rheumatic diseases through 19 items covering drug-taking behaviour to identify the reasons for adhering to treatment and the factors that contribute to suboptimal adherence. The objective of this study was to present the translation of the CQR into Danish and the face validity and reliability test.MethodsThe CQR was translated into Danish according to international guidelines, followed by a face validity test among 10 patients with rheumatoid arthritis in 2009. The test–retest reliability of the Danish CQR was evaluated in 49 patients with rheumatoid arthritis in 2020 - 2021 using the standard error of the measurement (SEM) converted into the minimally detectable change (MDC) and the intraclass correlation coefficient (ICC). Questionnaires were administered with a minimum of 10 days between assessments.ResultsThe participants in the reliability test had a mean age of 57.4 years (SD 16.1) and a mean disease duration of 1.13 years (range 2 months–2 years). The mean CQR score in the test and retest was 62.7 (confidence interval (CI) 58.8; 66.6) and 62.5 (CI 58.9; 66.1), respectively, with a SEM of 8.59 (7.16; 10.73) and an MDC of 16.83. A satisfactory test–retest reliability was confirmed by an ICC value of 0.79 (CI 0.68; 0.89).ConclusionThe Danish CQR has satisfactory test–retest reliability in patients newly diagnosed with rheumatoid arthritis and is considered a reliable tool to measure adherence in this group.

Reliability of Visual Field Testing in a Telehealth Setting Using a Head-Mounted Device: A Pilot Study.

Monitoring visual fields (VFs) through virtual reality devices proved to have good inter-test and test-retest reliability, as well as easy usability, when self-administered by individuals with and without VF defects in a remote setting. To assess the reliability of remote, self-administered VF monitoring using a virtual reality VF (VRVF) device in individuals without ocular disease and with stable VF defects. Individuals without ocular disease and with stable defects were recruited. All participants had a baseline standard automated perimetry (SAP) test. Participants tested remotely on a VRVF device for 4 weeks (examinations V 1 , V 2 , V 3 , and V 4 ), with the last 3 unassisted. The mean sensitivities of VRVF results were compared with each other and to SAP results for reliability. A total of 42 eyes from 21 participants were tested on the VRVF device. Participants tested consistently although external factors impacted outcomes. VRVF results were in reasonable agreement with the baseline SAP. Examinations performed by the cohort with stable defects evinced better agreement with SAP examinations (V2, P = 0.79; V3, P = 0.39; V4, P = 0.35) than those reported by the cohort without ocular disease (V2, P = 0.02; V3, P = 0.15; V4, P = 0.22), where the null hypothesis is that the instruments agree. Fixation losses were high and variable in VRVF examinations compared with those of SAP, particularly in certain test takers. Participants considered the device comfortable and easy to use. Self-administered, remote VF tests on a VRVF device showed satisfactory test-retest reliability, good inter-test agreement with SAP, and acceptability by its users. External factors may impact at-home testing and age and visual impairment may hinder fixation. Future studies to expand the sample size and understand inconsistencies in fixation losses are recommended.

Is it time to rethink disability assessment in low back pain? Reliability, internal consistency, and construct validity of the Brazilian WHODAS 2.0 for chronic low back pain.

The World Health Disability Assessment Schedule 2.0 (WHODAS 2.0) was developed to assess health and disability based on the biopsychosocial model. The WHODAS 2.0 has not been validated for Brazilians with chronic non-specific low back pain (LBP). We aimed to evaluate the reliability, internal consistency, and construct validity of the Brazilian version of the WHODAS 2.0 in patients with chronic LBP. Methodological study. The Brazilian version of the WHODAS 2.0 was applied to 100 volunteers with chronic nonspecific LBP. Test-retest reliability, internal consistency, and construct validity were assessed using the Spearman correlation test, Cronbach's alpha (α) coefficient, and Spearman's correlation test between WHODAS 2.0, the Oswestry Disability Index (ODI), Roland-Morris Disability Questionnaire (RMDQ), and Fear Avoidance Beliefs Questionnaire (FABQ), respectively. WHODAS 2.0 showed satisfactory test-retest reliability with a moderate correlation for total WHODAS 2.0 (r=0.75, p<0.05). Internal consistency was adequate for all domains and total score (α=0.82-0.96). Regarding construct validity, WHODAS 2.0, ODI (r=0.70, p<0.05), and WHODAS 2.0 and RMDQ (r=0.71, p<0.05) had significant correlations. Total WHODAS 2.0 and FABQ-Phys subscale scores correlated moderately (r=0.66, p<0.05). The Brazilian WHODAS 2.0 was proved to be a valid and reliable tool for patients with chronic LBP. The item referring to sexual intercourse had 27% and 30% of the missing values during the test and retest stage, respectively and had a high percentage of missing data for work-related questions (41% missing data) in the life activities domain; therefore, the data must be interpreted with caution. WHODAS 2.0can be used as a disability assessment strategy from a biopsychosocial perspective in this population.

Batswana Adolescents' Attitudes Toward Sex With Older Adults: Psychometric Properties of the Attitudes Toward Transactional Sex Scale.

A programmatic series of studies developed and evaluated the Attitudes toward Transactional Sex Scale (ATTS) to measure adolescents' attitudes toward engaging in a sexual encounter initiated by an older adult offering desired objects such as cell phone, clothes, cash, or car rides in exchange for sex. Qualitative interviews informed the initial item generation followed by a series of studies assessing the psychometric properties of the measure. Study 1 evaluated the ATTS in a sample of 186 Batswana adolescents and assessed the factor structure, item-to-whole correlations, internal consistency, and convergent validity. In Study 2, the ATTS was administered to a cross-validation sample (N = 387). Confirmatory factor analysis, convergent validity, and internal consistency were consistent with the findings from the original sample. Discriminant validity was also assessed in Study 2. A subset of the sample (N = 119) completed the measure on two occasions and yielded satisfactory test-retest reliability. The resulting instrument appears to have sound psychometric properties and can be used to measure adolescents' attitudes toward accepting such adult sexual initiation that are implicated in the disproportionate burden of HIV among adolescents and young adults in sub-Saharan Africa. No existing measure with known psychometric properties has previously been available.

Instrument to evaluate the perception of minimal contrasts in Chilean Sign Language - reliability evidence.

Obtain evidence of the test reliability to evaluate the perception of minimum contrasts in Chilean Sign Language (LSCh). Ten deaf children and adolescents aged between 7 and 14 years participated in this study. They were evaluated with the test of perception of minimal contrasts in LSCh. The test was reapplied 11 and 14 days after the first application (test-retest reliability). Spearman's Rho correlation was performed. During the first application, authorization was requested from the parents of the children and adolescents to record the responses of the participants so that another evaluator could re-score the protocols, in order to obtain inter-rater reliability. First-order agreement coefficient (AC1) Gwet's was used for data analysis. Test-retest obtained a strong and significant correlation (Rho= 0.741; p=0.014). The concordance values obtained inter-rater vary between 0.962 and 1 (p<0.001), indicating that the test presents almost perfect concordance. The minimum pairs perception test in LSCh presents satisfactory test-retest and inter-rater reliability.

Instrumento de evaluación de la percepción de los contrastes mínimos en Lengua de Señas Chilena - evidencias de confiabilidad

ABSTRACT Purpose Obtain evidence of the test reliability to evaluate the perception of minimum contrasts in Chilean Sign Language (LSCh). Methods Ten deaf children and adolescents aged between 7 and 14 years participated in this study. They were evaluated with the test of perception of minimal contrasts in LSCh. The test was reapplied 11 and 14 days after the first application (test-retest reliability). Spearman's Rho correlation was performed. During the first application, authorization was requested from the parents of the children and adolescents to record the responses of the participants so that another evaluator could re-score the protocols, in order to obtain inter-rater reliability. First-order agreement coefficient (AC1) Gwet’s was used for data analysis. Results Test-retest obtained a strong and significant correlation (Rho= 0.741; p=0.014). The concordance values obtained inter-rater vary between 0.962 and 1 (p&lt;0.001), indicating that the test presents almost perfect concordance. Conclusion The minimum pairs perception test in LSCh presents satisfactory test-retest and inter-rater reliability.

Turkish Adaptation of the Executive Functions and Occupational Routines Scale: Validity and Reliability Among Children with Dyslexia.

The purpose of the present study was to provide a Turkish cultural adaptation (EFORTS-T) of the Executive Functions and Occupational Routines Scale (EFORTS) and to investigate its psychometric quality in children with dyslexia. We culturally adapted the original English version of this instrument with internationally suggested methods. Participants included the mothers of either randomly selected children with dyslexia (study group, n = 158) or age and sex-matched typically developing children (control group, n = 167). These participants completed a demographic form, the EFORTS-T, and the Behavior Rating Inventory of Executive Function-Parent form (BRIEF-P). For internal consistency, the alpha coefficient of the new instrument was excellent (.93), and it showed satisfactory test-retest reliability over a 14-day interval (.91). The criterion-related validity between the EFORTS-T and the BRIEF-P was moderate (.73). Fit indices of the model supported its factor structure. In conclusion, our findings support the validity and reliability of the new Turkish version of EFORTS for evaluating EF and contributing to the daily occupational routines of children with dyslexia for Turkish respondents. Further studies are needed to apply this instrument to children of different age groups and psychiatric conditions.

A Study on the Psychometric Properties of the Short Version of the Physical Activity Enjoyment Scale in an Adult Population.

A new measure of the short form of the Physical Activity Enjoyment Scale (PACES-S), including four items, has been developed that focuses on the subjective experience of enjoyment. As validation has so far only been conducted in a youth population, the purpose of the present article was to test the psychometric properties of the measure in an adult population in three studies. In the first study (n = 1017) the results supported the unidimensional structure of the instrument (χ2 = 10.0; df = 2; p &lt; 0.01; CFI = 0.992; RMSEA = 0.063), revealed a satisfactory level of internal consistency (ω = 0.79), and showed that the measure is invariant across gender. The results on factorial validity and internal consistency were generally supported by the second study (n = 482), which additionally showed satisfactory test-retest reliability (r = 0.73). Finally, the third study (n = 1336) also supported the factorial validity and internal consistency of the measure and additionally showed a positive correlation with physical activity (r = 0.40), thus supporting the criterion-related validity of the measure. This more economical version of PACES seems to be particularly useful for large-scale studies.

Reliability and Validity of the Adapted Chinese Version of the Quality of Life Profile for Spine Deformities in Adolescents With Idiopathic Scoliosis.

Retrospective cohort study. To evaluate the cross-cultural adaptability and internal consistency of the Chinese version of the Quality-of-Life Profile for Spine Deformities (QLPSD) questionnaire in mainland China. The original QLPSD was translated from Spanish into Chinese with proper cross-cultural adaptation based on the American Academy of Orthopaedic Surgeons guidelines. A total of 129 AIS patients referring to our institution from February 2021 to January 2022 were enrolled in this study. The effects of ceiling and floor were evaluated and the reliability was verified by examining the internal consistency (the Cronbach's α coefficient). Interclass Correlation Coefficient (ICC) was used to test and retest reliability. The C-QLPSD dimensions were compared with the domains in Chinese version of 36-Item Short Form Health Survey (SF-36) and Scoliosis Research Society-22 (SRS-22) questionnaires using Pearson correlation coefficient to assess the concurrent validity. No significant floor and ceiling effects in C-QLPSD was observed. The total Cronbach's α was estimated at .914, ranging from .768 in back pain dimensions to .862 in psychosocial function dimensions. The C-QLPSD dimensions indicated satisfactory test-retest reliability with ICC range of .784-.870. Construct validity analysis revealed that C-QLPSD was well correlated with SRS-22 and SF-36. The values of total correlation coefficient were calculated at -.924 and -.871, respectively, which were both statistically significant (P < .05). The adapted Chinese version of QLPSD had good internal consistency and excellent test-retest reliability, which can be used to assess the outcome among Chinese-speaking patients with adolescent idiopathic scoliosis.

The construction of a new Clinical Quality of Life Scale (CLINQOL)

Whilst the variables in quality of life and well-being can be separated into objective and subjective domains, there remains a dearth of multiple utility instruments that assess their impact upon quality of life. To address this, ten domains were identified in a preliminary exploratory literature search, and an exploratory review generated enough facets to represent each domain, with items developed to form a composite scale. A principal components analysis run on data collected from 210 participants produced seven factors: relationships, work, money, health, leisure, and life management, with the remaining four domains subsuming into a seventh composite subjective factor (mental state). Final items were collated into the new Clinical Quality of Life Scale (CLINQOL) and were tested against the Assessment of Quality of Life Instrument, the Personal Wellbeing Index–Adult, Positive and Negative Affect Scale, the Satisfaction with Life scale, and the Mindfulness Attention Awareness Scale. The CLINQOL demonstrated suitable reliability, with items within each category forming internally consistent subscales. The full scale score demonstrated satisfactory test–retest reliability and concurrent validity, correlating with all measures. Findings suggest that the CLINQOL captures critical clinical factors, and may be an acceptable instrument to assess quality of life and well-being.

Cross-cultural adaptation and validation of simplified Chinese version of the Spine Oncology Study Group Outcomes Questionnaire (SOSGOQ) 2.0 with its assessment in clinical setting

BACKGROUND CONTEXTThe treatment of spinal metastases (SM) has been significantly improved in recent years, which gives health-related quality of life (HRQOL) further significance in management of SM. The Spine Oncology Study Group Outcomes Questionnaire version 2.0 (SOSGOQ 2.0) was a specific targeted SM HRQOL criterion that was previously reported to pose good reliability and validity. However, there is no culturally adapted, reliable, and validated version of SOSGOQ 2.0 in mainland China. PURPOSEThe current study aimed to translate the SOSGOQ 2.0 in a cross-cultural fashion, before evaluating the reliability and validity of the adapted simplified Chinese version of (SC-SOSGOQ 2.0) for patients with spinal metastases (SM). STUDY DESIGN/SETTINGTranslation, cross-cultural adaptation, and validation were performed on the Chinese version of the SOSGOQ 2.0. PATIENT SAMPLEPatients who were diagnosed with metastatic spinal disease, posing at least 6-years experience of education and the ability to read and speak Chinese. OUTCOME MEASURESReliability and Validity of the SC-SOSGOQ 2.0 were measured to assess HRQOL in patients with SM. METHODSThe cross-cultural adaptation of the SOSGOQ 2.0 was conducted following international guidelines. The reliability and validity of the SC-SOSGOQ 2.0 was assessed in a multi-center, prospective observational study. The test-retest reliability was assessed by comparing the results of the first and final SC-SOSGOQ 2.0 scales, with 2 weeks apart. The discriminative, concurrent, and construct validity of the cross-culturally adapted questionnaire was individually evaluated. The relationship among the SC-SOSGOQ 2.0, SC-EQ-5D-5L and SC-SF-36 was assessed using the correlation coefficients. RESULTSOne hundred and twenty patients were included in this study. No floor or ceiling effects were observed for the SC-SOSGOQ 2.0. The Cronbach's α for domains of neurological function, pain, mental health, social function, and post-therapy were 0.825, 0.876, 0.896, 0.897, 0.943, and 0.835, respectively. The value of inter-class correlation coefficient ranged from 0.55 to 0.83, which reflected a satisfactory test-retest reliability. Concurrent assessment of criterion validity demonstrated a moderate-to-strong correlation in all domains of SC-SOSGOQ 2.0 with the SC-EQ-5D-5L (0.34–0.74) and SC-SF-36 (0.33–0.76). The best-correlated domain was physical function (0.741 in the EQ-5D-5L and 0.722 in the SF-36). CONCLUSIONSThe SC-SOSGOQ 2.0 demonstrated an excellent acceptability, score distribution, internal consistency, test-retest reliability and validity. It was therefore considered as a tool effective for evaluating HRQOL of Chinese patients with SM.

Translational and linguistic validation of the Arabic version of dysfunctional voiding symptom score questionnaire

Dysfunctional voiding is a multifactorial condition that encompasses a wide variety of symptoms rendering its diagnosis a challenging process. In this setting, several tools have been proposed to aid the diagnosis of this disease among which is the Dysfunctional Voiding Symptom Score (DVSS). The DVSS has been translated and validated to different languages including Japanese, Thai, Chinese, Serbian, and Portuguese. The aim of the current study is to translate and cross-culturally validate the DVSS into the Arabic language. The DVSS was translated and culturally adapted to the Arabic language following the standards of the ISPOR for the translation and cultural adaptation process for patient-reported outcomes measures. Subsequently, the translated version underwent a pre-test on 15 patients with dysfunctional voiding. Afterwards, the translated version was filled by 82 pediatric patients and/or their parents with dysfunctional voiding and then the same questionnaire was refilled by the patients and their families one week later at home. Finally, a group of healthy children and/or their parents were recruited to fill the questionnaire as a control group. Cronbach's alpha, Pearson's correlation, and Interclass correlation were used to assess for internal consistency and reliability between test-retest of the Arabic version. The mean total score of DVSS for the case and control groups was 16.66±6.07 and 6.11±3.36, respectively (P<0.001). The Arabic-DVSS showed excellent internal consistency (Cronbach's α>0.9) for all the questions except Q1, Q3, Q6, and Q7 that showed good internal consistency. Translational and linguistic validation of the DVSS questionnaire into Arabic language is an important step toward its introduction in the clinical practice in Arabic countries; however, this step has also to consider the cultural variations between countries and not just linguistic translation. Generally, the Arabic-DVSS showed a satisfactory test-retest internal consistency and reliability with an excellent Cronbach's α (0.982) and ICC (0.962) for the total score of the Arabic-DVSS. Yet, the main limitation of this study was that it was only advocated for the translation and validation of the Arabic-DVSS and did not assess its value in patients' follow-up. The Arabic version of the DVSS is reliable and valid to help in the evaluation of DV in children of Arabic countries.

Psychometric performance of proxy-reported EQ-5D youth version 5-level (EQ-5D-Y-5L) in comparison with three-level (EQ-5D-Y-3L) in children and adolescents with scoliosis.

To assess the psychometric performance of proxy-reported EQ-5D-Y-5L (Y-5L) in comparisons with EQ-5D-Y-3L (Y-3L) administered by caregivers of patients with juvenile (JIS) or adolescent idiopathic scoliosis (AIS). A consecutive sample of caregivers of JIS or AIS patients were recruited. Redistribution property, ceiling effects, and discriminative power were examined. Known-group validity was determined by examining their ability to detect differences across clinical known groups. Test-retest reliability was assessed using intraclass correlation coefficient (ICC) for EQ-VAS score and Gwet's agreement coefficient (GAC) and percentage agreement (PA) for dimension responses. Furthermore, subgroups were analyzed for comparing test-retest reliability. A total of 130 caregivers were involved in the study. Consistencies between proxy-reported Y-3L and Y-5L were very high for all dimensions (93.8-99.2%). The ceiling effect in the Y-5L was slightly reduced in four dimensions (AR: 0.8-2.3%) whereas increased in "Having pain/discomfort". Greater informativity was found in the Y-5L than the Y-3L. In known-group comparisons of curvature magnitude, curvature type, and treatment modality, Y-5L and Y-3L dimension scales showed hypothesized results. For example, more full-health responses were found in the mild Cobb angle group (Y-5L: 63.1%; Y-3L: 62.2%) than the severe Cobb angle group (Y-5L: 55.6%, Y-3L: 55.6%). EQ-VAS score exhibited low test-retest reliability (ICC: 0.41), whereas dimension scales of both instruments showed satisfactory test-retest reliability (GAC ≥ 0.7 and PA ≥ 70% for all). In most known groups, hard-to-observe dimensions were more reliable for proxy-reported Y-5L than Y-3L. Both the proxy-reported Y-5L and Y-3L are valid and reliable instruments for assessing the HRQoL of JIS or AIS patients.