Chi-square Goodness Of Fit Test Research Articles

Genetic control of earliness in cowpea (Vigna unguiculata (L) Walp)

Global climate change is expected to further intensify the already harsh conditions in the dry savannah ecological zones of sub-Saharan Africa, posing serious threats to food and income security of millions of smallholder farmers. Breeding cowpea for improved earliness could help minimize this risk, by ensuring that the crops complete their lifecycle before the cessation of rainfall. In this study, we crossed two sets of cowpea lines showing contrasting phenotypes for earliness in terms of days to 50% flowering (DFF). One set of the lines comprised three extra-early parents (viz.: Sanzi-Nya, Tobonaa and CB27, 30–35 DFF), and the other set consisted of three early-to-medium maturity lines (viz.: Kirkhouse-Benga, Wang-Kae and Padi-Tuya, 42–45 DFF). The derived crosses and their parents were evaluated for key earliness-related traits at Nyankpala and Manga sites of CSIR-Savanna Agricultural Research Institute (SARI), Ghana. To unravel the genetic control of measured traits, we compared the appropriateness of Chi-square goodness of fit tests using classical Mendelian ratios, and frequency distribution (histogram)-related statistics such as skewness and kurtosis. The Chi-square test suggested a single dominant gene mode of inheritance for earliness, whereas the quantitative methods implicated duplicate epistasis and complementary epistatic gene actions. Our results show that coercing segregating lines to fit into classical Mendelian ratios to determine the genetic control of earliness could be misleading, due to its subjectivity. Thus, the genetic control of earliness in cowpea is governed by complementary and duplicate epistasis. The most applicable breeding approach for traits influenced by duplicate epitasis is selection of desirable recombinants from segregating populations developed from bi-parental crosses. Complementary epitasis, as found in the Wang-Kae × CB27 cross, could be exploited in developing improved extra-early lines through backcrossing. Heritability and genetic advance estimates were high for days to first flower appearance (DFFA) and days to 95 % pod maturity (DNPM) in the Padi-Tuya × CB27 and Kirkhouse-Benga x CB27 crosses, indicating that breeding for extra-earliness is feasible. CB27 could be a good donor for introgression of earliness into medium to late maturing improved cowpea varieties, because crosses developed from it had high heritability and genetic advance estimates.

Genetics of tolerance to bacterial wilt disease in eggplant

ABSTRACT Understanding the inheritance pattern of bacterial wilt (BW) disease tolerance is important to maximize genetic potential in eggplant (Solanum melongena L.). The study was conducted employing populations P1, P2, F1, F2, BC1, and BC2 of the crosses ‘Utkal Anushree × Bidhan Suphala,’ ‘Utkal Anushree × Garia,’ and ‘Utkal Madhuri × Bidhan Super’ to understand genetic control of BW disease tolerance. The inheritance study indicated that tolerance to BW disease was conditioned by a single dominant gene in 3 Tolerant × Susceptible crosses. The nature, and magnitude, of gene action controlling inheritance of bacterial wilt-related traits (days to 1st appearance of BW disease and disease incidence of BW) differed between crosses and traits, mostly conditioned by nonadditive gene action and duplicate epistasis. The disparity between results from the chi-square goodness of fit test and other quantitative methods indicated that the chi-square goodness of fit test alone could be misleading in the study of genetic control of bacterial wilt related traits due to its subjectivity. Complementary epitasis in 2 crosses for days to 1st appearance of BW disease would be helpful in improvement of this trait through backcrossing. Duplicate epistasis controlling BW disease incidence suggested selection of desirable recombinants from the segregating population developed from bi-parental mating. The BW-tolerant plants, with an acceptable fruit weight, can be isolated from segregating generations with involvement of susceptible plants having a higher fruit weight.

Changes in Childhood Immunizations and Intermittent Preventive Malaria Treatment in a Peripheral, Referral Immunization Center During the First 12 Months of COVID-19 Pandemic in Sierra Leone, Western Africa.

BackgroundThere is increasing evidence that the COVID-19 pandemic disrupted childhood immunization services. However, detailed reports on immunizations and preventive antimalarial prophylactic treatments delivered and how the trends changed in referral centers in low-income countries are still missing.MethodsWe performed a retrospective cross-sectional study. Data for vaccinations administered to children <5 years of age, according to the local vaccination schedule, were extracted from the official records of the Kent Community Health Post, Sierra Leone, in the period between April 2019 and March 2021. We compared the vaccinations performed in the first year, considered as a pre-Covid period, with the second year, post-Covid period. Both the period was then divided in four trimester each and the same analysis was operated for each trimester. A Chi-square goodness of fit test was performed to compare the number of vaccinations performed both in the 2 years and in the 8 trimesters.FindingsSeven thousand two hundred and eighty-three vaccinations were administered: 4,641 in the period between April 2019 and March 2020 and 2,642 between April 2020 and March 2021. The drop in immunizations performed began as soon as the first cases were described in China. The drops were statistically significant when the first three trimesters of the two study periods were compared, while no statistically significant differences were observed for all the vaccines performed in the 4th trimesters. Vaccines administered at birth (BCG) were less affected compared to booster vaccinations.ConclusionsImmunizations administered in a referral health center in Sierra Leone significantly declined during the pandemic. Although the decline was less pronounced in the last months of the pandemic, we don't think that the small increase would indicate the recovery of previously missed vaccinations. These findings open new public health challenges for the coming years.

An [formula omitted] asymptotically nearly minimax goodness of fit test

In this paper an essentially optimal asymptotically minimax goodness of fit test is introduced, especially useful for signal detection. In contrast to the chi-square goodness of fit tests, which are designed to detect the presence of an accumulation of small departures/deviations from the null distribution, this test is designed and succeeds at detecting the presence of a significant, substantial, local departure from the null distribution and therefore it is more powerful than chi-square tests for real world signal detection.

Rating of Modern Color Image Cryptography: A Next-Generation Computing Perspective

Issues such as inefficient encryption architectures, nonstandard formats of image datasets, weak randomness of chaos-based Pseudorandom Number Generators (PRNGs), omitted S-boxes, and unconvincing security metrics leading to increased computational time and inadequate security level of chaos and Deoxyribonucleic Acid- (DNA-) based image encryption schemes need careful examination towards the development of more stable encryption schemes in terms of efficiency and reasonable security. A new taxonomy of image encryption based on chaotic systems, hyperchaotic systems, and DNA is propounded to assess the impact of these issues on the performance and security metrics. The primary emphasis of this research is to study various recent encryption architectures centered on a variety of confusion and diffusion methods. It is aimed at assessing the performance and security of various ciphers using a cipher rating criterion that categorizes ciphers into different classes. The parameters that are included in the rating criteria are information entropy, chi-squared goodness of fit test for histogram uniformity analysis, encryption efficiency, key space, differential attacks (Number of Pixels Change Rate and Universal Average Changing Intensity), key sensitivity analysis, encryption time, randomness tests such as NIST-R (a statistical suite for validating the randomness designed by the National Institute of Standards and Technology), correlation coefficient analysis, contrast analysis, energy analysis, homogeneity analysis, Mean Absolute Error, peak signal-to-noise ratio, and robustness to noise and occlusion attacks.

Application of Queuing Theory in a University Clinic

Institutions such as banks, airlines, hospitals and telecommunication industries employ queuing theory to help in assisting the capacity levels needed to experience demand in a more optimized way for service improvement. In this article, we studied and employed the queuing theory activities of the Federal University Gusau Health Services Clinic. The distributions of patients’ arrival and service times were identified. The system was treated as a single, time-independent arrival with multiple service points. Based on the data obtained on the arrival and service processes, appropriate distributions were fitted and tested using the Chi-squared goodness of fit-test.

Relative Age Effects in Male Cricket: A Personal Assets Approach to Explain Immediate, Short-Term, and Long-Term Developmental Outcomes.

The purpose of this study was to adopt the Personal Assets Framework (PAF) to examine the immediate, short-term, and long-term developmental outcomes associated with relative age effects (RAEs) in male cricket. As such, this study was comprised of three aims: (a) examine the birth quarter (BQ) distribution of players throughout the England and Wales Cricket Board (ECB) national talent pathway (i.e., Regional U15, Regional U17, England U19, England Lions, England T20, England ODI, and England Test; n = 1800; immediate timescale), (b) explore the youth-to-senior transitions based on BQ and skill-set (i.e., batters and bowlers; short-term timescale), and (c) analyse the average number of games played at senior levels based on BQ and skill-set (i.e., long-term timescale). A chi-square goodness of fit test, Cramer’s V, odds ratios, and 95% confidence intervals were used to compare the BQ distributions of each cohort against the expected BQ distributions. In the immediate timescale, results showed that relatively older players were overrepresented throughout all the youth levels (p < 0.05, V = 0.16–0.30), whereas there were no differences at senior levels (p > 0.05, V = 0.05–0.15). In the short-term timescale, when the senior cohorts were compared to the expected BQ distributions based on the Regional U15 cohort, relatively younger players were more likely to transition from youth to senior levels (p < 0.05, V = 0.22–0.37). In the long-term timescale, relatively older batters were selected for more games (p < 0.05, V = 0.18–0.51), whereas relatively younger bowlers were selected for more games (p < 0.05, V = 0.17–0.39). Moving forward, it is important for researchers and practitioners to better understand how (bi)annual-age grouping shapes developmental outcomes in across different timescales (i.e., immediate, short-term, and long-term), as well as consider alternative grouping strategies and RAE solutions.

Novel and stable QTL regions conferring resistance to MYMV disease and its inheritance in blackgram (Vigna mungo (L.) Hepper)

Mungbean yellow mosaic virus (MYMV) disease is a significant constraint for blackgram production. The present study employed a mapping population derived from a cross between susceptible (MDU 1) and resistant (TU 68) genotypes to identify quantitative trait loci (QTL) associated with MYMV disease resistance in addition to bruchine resistance loci identified from the previous study. Phenotyping was carried out in F2 generation under the disease spreader row method at field condition. Disease score observations were carried out 60 days after sowing (DAS). The chi-square goodness of fit test revealed inhibitory gene action with two genes controlling the expression of resistance to MYMV disease. However, QTL analysis revealed one major QTL region, i.e. qMYMVD_60 at LG 10 responsible for MYMV disease score at 60 DAS, accounted for 21 per cent of variation. The identified QTL has the flanking markers as CEDG180 and CEDG116. Hence, the QTL, qMYMVD_60 may be utilized in the breeding of MYMV disease resistance. Further, the marker-assisted introgression of both the MYMV and bruchine resistance QTLs can be performed in the near future.

Perceptions, beliefs and behaviors of nutritional and supplementary practices in inflammatory bowel disease

PurposeTo gain insight into the behaviors, perceptions and beliefs of inflammatory bowel disease (IBD) patients nutritional and supplementary practices and also to explore perceptions and behaviors in relation to anti-inflammatory supplementation with specific emphasis on Montmorency tart cherries.Methods80 IBD patients completed a 16-item close-ended questionnaire which was divided into three sub-sections: baseline/demographic characteristics, disease characteristics and dietary and supplementary perceptions, beliefs and behaviors. One-sample chi-square goodness of fit tests were used for each question and two-way Pearson chi-square tests of independence were used to undertake bivariate cross-tabulation comparisons to test differences in responses to each question between baseline/demographic variables.ResultsThe majority of participants (N = 40) did not follow a specific dietary pattern or use supplements (N = 56). Respondents also predominantly rated that diet can both positively (N = 66) and negatively (N = 68) influence IBD. In addition, participants rated that supplements can positively influence IBD (N = 65) and that lack of scientific evidence was the primary mechanism preventing them from utilizing supplements (N = 34). Finally, patients also strongly reported that they would be willing to take Montmorency tart cherry supplementation (N = 73).ConclusionsThe disconnect between behavior and beliefs in both diet and supplementary practices, indicate that interventions designed to translate beliefs/knowledge into behaviors are warranted. There is also a necessity to undertake well-designed intervention trials examining the efficacy of food supplements, and with patient’s willingness to take Montmorency tart cherry, there is a strong rationale for future randomized trials examining the efficacy of tart cherry supplementation in IBD.

Development and Validation of Subjective Financial Distress Questionnaire (SFDQ): A Patient Reported Outcome Measure for Assessment of Financial Toxicity Among Radiation Oncology Patients.

BackgroundFinancial toxicity is a consequence of subjective financial distress experienced by cancer patients as a result of treatment expenditures. Financial toxicity has been associated with poor quality of life, early mortality, and non-adherence. It is evident from the literature that the currently available instruments for the assessment of financial toxicity do not measure coping and support seeking domains. The aim of this study was to develop an instrument for the assessment of financial toxicity among radiation oncology patients that captures and integrates all the relevant domains of subjective financial distress.Materials and MethodsThe study was conducted among Head & Neck cancer (HNC) patients (age ≥18 years) who have completed the radiotherapy either as stand-alone or part of a multimodal treatment. Literature review, expert opinion, and patient interviews were used for scale item generation. The validity and underlying factor structure were evaluated by Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA). The reliability and internal consistency of the final scale was assessed using Cronbach’s alpha coefficient.ResultsA total of 17 items were identified for scale development. The preliminary 17-item instrument was administered to 142 HNC patients. Among 142 participants, 85.9% were male and 98.6% were from rural areas. EFA was performed on 17 items and three items were removed (factor loadings <0.5). The remaining 14 items loaded onto three factors (eigenvalue >1) explaining 62.0% of the total variance. The Chi-square goodness of fit test in CFA and the values of other model fit indices, namely, RMSEA = 0.045, SRMR = 0.014, GFI = 0.92, CFI = 0.98, and TLI=0.97 indicate a good model fit suggesting the three-factor model adequately fits the data. The Cronbach’s α for the final 14-item scale was 0.87 indicating excellent reliability and the Cronbach’s α coefficient of all the individual 14 items was ≥0.85 (range 0.85–0.88).ConclusionThe SFDQ showed excellent validity and reliability. SFDQ captures and integrates all the relevant domains of financial toxicity. However, the provisional SFDQ instrument warrants further larger sample studies for validation and psychometric evaluation in different primary cancer subsites and treatment modalities from multiple cancer centers to improve the generalizability of this instrument.

Cognitive outcomes following pediatric epilepsy surgery

ObjectivesTo characterize outcomes following pediatric epilepsy surgery across a broad range of cognitive domains using empirical methods (i.e., reliable change indices: RCIs), compare these outcomes with those based on traditional methods (i.e., standard deviation: SD), and identify factors associated with postoperative cognitive declines and/or improvements. MethodsThis retrospective cohort study included 186 children who underwent surgical resection for treatment of pharmacoresistant epilepsy and who completed pre- and postoperative neuropsychological assessments. Postoperative testing occurred approximately 6.5 months after surgery and included measures of intelligence, attention/working memory, processing speed, language, executive functioning, visuospatial skills, memory, and academic achievement. Change scores for each patient were classified as decline, no change, or improvement using epilepsy-specific RCIs. Chi-square goodness of fit tests were used to compare the distribution of outcomes as classified with RCIs to those obtained using a traditional one SD cutoff. Multinomial regression analyses were conducted to identify factors associated with cognitive decline and/or improvement. ResultsWhile 18% of children demonstrated no postoperative declines or improvements in any cognitive domain, the majority demonstrated relatively focal changes (declines and/or improvements in 1–2 cognitive domains). Rates of postoperative decline and improvement across individual cognitive domains were variable and ranged from 4‐35% and 2–31%, respectively. Compared to RCIs, SD methodology often overestimated postoperative improvements and varied with respect to declines. Factors associated with RCI decline or improvement included preoperative performance, age at surgery, surgery site, and postoperative seizures. SignificanceResults suggest substantial variability in individual cognitive outcomes approximately 6.5 months following pediatric epilepsy surgery. The differences in change distributions obtained using epilepsy-specific RCIs versus SDs highlight the need for studies using empiric methodology to study postoperative cognitive change. Variables associated with postoperative cognitive change may be used to develop multivariable prediction models in future studies to aid clinical decision-making and patient counseling.

Household solid waste management practices and perceptions among residents in the East Coast of Malaysia

BackgroundPoor waste disposal practices hamper the progress towards an integrated solid waste management in households. Knowledge of current practices and perception of household solid waste management is necessary for accurate decision making in the move towards a more sustainable approach. This study investigates the household waste practices and perceptions about waste management in Panji, one of the sub-districts in Kota Bharu, Kelantan, Malaysia.MethodsA stratified random sampling technique using a cross-sectional survey questionnaire was used to collect data. A total of 338 households were interviewed in the survey and data were analyzed using SPSS. Chi-square goodness of fit test was used to determine the relationships between categorical variables, whereas Chi-square bivariate correlation test was performed to observe the correlation between the perceptions of waste segregation with socio-demographic background of the respondents. The correlation between perception of respondents with the locality, house type and waste type were also conducted. Principal component analysis was used to identify grouping of variables and to establish which factors were interrelated in any given construct.ResultsThe results of the study revealed that 74.3 % of households disposed of food debris as waste and 18.3% disposed of plastic materials as waste. The study also showed that 50.3% of the households segregate their waste while 49.7% did not. About 95.9% of the respondents were aware that improper waste management leads to disease; such as diarrhea and malaria. There were associations between locality, age and house type with waste segregation practices among respondents (Chi-square test, p<0.05). Associations were also found between locality with the perception of improper waste management which lead to disease (Chi-square test, p<0.05). Principal Component Analysis showed that 17.94% of the variance has high positive loading (positive relationship) with age, marital status and, type of house.ConclusionThis study highlights the importance to design waste separation programs that suit the needs of targeted population as a boost towards sustainable solid waste management practices.

Generalized Kumaraswamy Generalized Power Gompertz Distribution: Statistical Properties, Application, and Validation Using a Modified Chi-Squared Goodness of Fit Test

A new six-parameter continuous distribution called the Generalized Kumaraswamy Generalized Power Gompertz (GKGPG) distribution is proposed in this study, a graphical illustration of the probability density function and cumulative distribution function is presented. The statistical features of the Generalized Kumaraswamy Generalized Power Gompertz distribution are systematically derived and adequately studied. The estimation of the model parameters in the absence of censoring and under-right censoring is performed using the method of maximum likelihood. The test statistic for right-censored data, criteria test for GKGPG distribution, estimated matrix Ŵ, Ĉ, and Ĝ, criteria test Y2n, alongside the quadratic form of the test statistic is derived. Mean simulated values of maximum likelihood estimates and their corresponding square mean errors are presented and confirmed to agree closely with the true parameter values. Simulated levels of significance for Y2n (γ) test for the GKGPG model against their theoretical values were recorded. We conclude that the null hypothesis for which simulated samples are fitted by GKGPG distribution is widely validated for the different levels of significance considered. From the summary of the results of the strength of a specific type of braided cord dataset on the GKGPG model, it is observed that the proposed GKGPG model fits the data set for a significance level ε = 0.05.

Fusion prostate biopsy: tips and tricks to improve rigid registration

Background: We introduced tips and tricks to improve the rate of correct rigid registration during fusion prostate biopsy: (1) creation of similar anatomical condition during multiparametric magnetic resonance of the prostate (mpMRI) and trans rectal ultrasound (TRUS) (bladder and rectum should be empty and the use of MRI trans rectal probe avoided), (2) revision of mpMRI performed outside our institution by our radiologist, (3) the use of the boundary between transitional/central and peripheral zone of the prostate as the main anatomical landmark (less prone than the peripheral shape to deformation) at the level of the target, (4) repeating the registration at the level of every target or after unintended movement of the patients. Methods: We reviewed our internal database to assess the impact of our tips and tricks. Patients submitted to radical prostatectomy after fusion biopsy in our centre over the last two years were selected. Biopsy positivity in a sextant with cancer at the radical prostatectomy and a suspected mpMRI (3–5) was computed as a correct registration, the positivity of a biopsy in an adjacent sextant as a quasi-correct registration. Results: 49 out of 59 and 5 out 59 correct and quasi-correct registrations were finally computed. Assuming acceptable 90% of correct and 95% of quasi-correct rate, the expected figures are respectively 53 and 3. The chi-square goodness of fit test show a X square value of 2.97 and a p-value of 0.23. Therefore, the null hypothesis that the two distributions are homogeneous cannot be rejected. Conclusions: The introduction of some tips and trick in the daily clinical practice contributed to some extent to a satisfactory rate of correct rigid registration in our series of fusion prostate biopsies.

Seamless public transport ticket inspection: Exploring users’ reaction to next-generation ticket inspection

Ticket payment and inspection are the two main dimensions of public transport (PT) ticketing for users. Both research and technological advances have focused mainly on improving the former. In contrast, this study explored users' preferences for ticket inspection options and identified some factors that influenced their likelihood of accepting “seamless ticket inspection”. The dataset is part of a two-wave survey that was collected along the Stockholm – Uppsala corridor to evaluate the Movingo integrated ticketing scheme, a smartcard and mobile phone-based multiple-county commuting ticket that applies to both intercity and intracity bus and train services across the six Mälardalen regions of Sweden. McNemar's test, one-way chi-squared goodness of fit test, multinomial and nested logit models were used to analyse the samples. The findings suggest that given five ticket inspection options, many of the respondents chose “seamless ticket inspection”. Major PT user groups such as females and young people are more likely to accept “seamless ticket inspection”. Further research is recommended on particular aspects of the envisaged “seamless ticket inspection”.

Correlation of Prominent Intelligence Type &amp;amp; Coworker Relations

When most individuals think of learning types, they think of three categories: visual, auditory, and kinesthetic. However, in the mid-1980s, researchers expanded on the idea of how humans discover and process information with the Multiple Intelligence Theory. At first, the theory only contained six categories (Interpersonal, Intrapersonal, Visual-Spatial, Body-Kinesthetic, Linguistic, and Logical) but has now grown to nine categories with the addition of Existential, Naturalistic, and Musical. In practice, the Multiple Intelligence Theory has proven to be controversial in its acceptance, with many scholars citing its lack of empirical support while others note its efficacy for modern educational settings and the workplace. In this study, we focused on further discovering whether there is a correlation between the intelligence types most prominent in an individual and the intelligence types most prominent in the coworker they find they work with most efficiently. To do so, data was collected from a variety of businesses (restaurants, bookstores, etc.) in the cities of Okemos and Williamston, Michigan in two steps. First, we performed an assessment that determines which intelligence type is most prominent in the participant, and second, we used an anonymous survey for the individual to express the three people they feel they work with best. With fifty-six total participants, and using the chi-square goodness of fit test, we found that there may not actually be a correlation between these categorical types when it comes to workplace atmosphere and project efficiency.

Conceptualising In-Flight Experience: An air Traveller Perspective

The aviation industry has evolved rapidly in recent years, and so have consumer expectations with regard to air travel. This study examines how air travellers conceptualise in-flight experience. Using a mixed-methods approach, this study is divided into two phases. First, semi-structured qualitative interviews were undertaken with 32 members of the flying public and analysed using thematic analysis. Second, based upon the key themes identified in the first phase, a questionnaire (with both quantitative and qualitative questions) was developed and administered to 151 participants. The first phase identified the different ways air travellers conceptualise in-flight experience, with the most important elements being food and drinks, flight attendants, entertainment, seat comfort, and leg room. In the second phase these important elements are shown to have statistically significant effects upon in-flight experience (using a t-test and chi-squared goodness of fit test), however, the size of their effects varied. A Friedman test (with post-hoc Wilcoxon signed-rank test) demonstrates that air travellers rank the contribution of each of these elements towards in-flight experience differently. The findings allow airline managers to prioritise different aspects of in-flight experience based upon their relative importance to air travellers.

Conceptualising In-Flight Experience: An air Traveller Perspective

The aviation industry has evolved rapidly in recent years, and so have consumer expectations with regard to air travel. This study examines how air travellers conceptualise in-flight experience. Using a mixed-methods approach, this study is divided into two phases. First, semi-structured qualitative interviews were undertaken with 32 members of the flying public and analysed using thematic analysis. Second, based upon the key themes identified in the first phase, a questionnaire (with both quantitative and qualitative questions) was developed and administered to 151 participants. The first phase identified the different ways air travellers conceptualise in-flight experience, with the most important elements being food and drinks, flight attendants, entertainment, seat comfort, and leg room. In the second phase these important elements are shown to have statistically significant effects upon in-flight experience (using a t-test and chi-squared goodness of fit test), however, the size of their effects varied. A Friedman test (with post-hoc Wilcoxon signed-rank test) demonstrates that air travellers rank the contribution of each of these elements towards in-flight experience differently. The findings allow airline managers to prioritise different aspects of in-flight experience based upon their relative importance to air travellers.

Anxiety treatment preferences among veteran primary care patients: Demographic, mental health, and treatment-related correlates.

Anxiety symptoms are common, yet undertreated, among primary care patients. Accommodating patient treatment preferences improves engagement and retention. In contrast to depression, little is known about primary care patients' preferences for anxiety treatment. Participants were 144 veterans experiencing anxiety symptoms but not receiving psychotherapy who were recruited from primary care. Preferences for 11 anxiety treatment attributes (method; location; type; format; provider; frequency, length, and number of appointments; psychotherapy orientation; symptom focus; and topic/skill) and demographic, mental health (e.g., anxiety symptom severity), and treatment-related (e.g., psychotherapy history) variables were assessed via mailed survey. We used chi-square goodness of fit tests to identify patient preferences for each attribute and multivariate multinomial logistic regression models to explore demographic, mental health, and treatment-related correlates of treatment preferences. Patient preferences were largely consistent with integrated primary care models, particularly Primary Care Behavioral Health, with a few exceptions. Patients preferred longer appointments (e.g., 45-60 minutes) and a longer duration of treatment (e.g., ≥13 appointments) than is typically offered in primary care. Several variables, particularly education level, perceived need for help, anxiety symptom severity, and attitudes toward psychotherapy, were repeatedly associated with preferences for various anxiety treatment attributes. Results from this study suggest that patients tend to have distinct preferences for anxiety treatment in primary care that are largely consistent with common integrated primary care models. Results also identify several variables that may be associated with specific preferences, which may help match patients to their preferred type of care. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Chi-square of Pseudorandom Number Generator of Normal Distribution in C++17

High quality pseudorandom number generators were needed in many software solutions throughout the history of programming. Nowadays, these generators play an even more significant role in software development. Generally, these generators bring a certain level of coincidence in some algorithms which need it. This work focuses on the statistical evaluation of one of the representatives of the generators using Pearson's Chi-square goodness of fit test. The generator of pseudorandom numbers under test is the specific implementation in the modern standard of the programming language of C++ (the standard of C++17). Results presented in this paper inform whether the numbers generated by the selected generator follow the desired probability distribution (normal).