Anxiety Inventory For Respiratory Disease Research Articles

Anxiety Inventory for Respiratory Disease: Cross-Cultural Adaptation and Semantic Validity of the Brazilian Version for Individuals with Chronic Obstructive Pulmonary Disease.

Most instruments available to screen for anxiety in people with chronic obstructive pulmonary disease (COPD) are not disease specific. Therefore, the Anxiety Inventory for Respiratory Disease (AIR) was developed to measure anxiety for this patient group; however, it requires cross-cultural adaptation for use in non-English speaking countries. To carry out cross-cultural adaptation of the AIR scale for Brazilian patients with COPD and to analyze its semantic validity. This methodological study followed six stages: 1) Initial translation by two independent translators fluent in English; 2) Synthesis of translations; 3) Back translation by two English first language translators; 4) Expert committee review (eight healthcare professionals, a methodologist, the translators, and back-translators); 5) Pre-final version evaluation with 30 patients with COPD through a cognitive interview; and 6) Submission of documents. Semantic validity was analyzed by agreement rate and content validity index (CVI) for the committee equivalence assessments. 1) Initial translation: the two translated versions presented eight divergences; 2) Synthesis of translations: the differences were discussed to reach consensus; 3) Back-translation: there were no important inconsistencies; 4) Expert Committee: the experts proposed eight and the instrument developer proposed three changes, which were analyzed and voted on, resulting in the pre-final version; 5) Evaluation of the pre-final version: data collection allowed for other changes and the formulation of instructions by applying the adapted instrument in an interview format. Patients rated the questions as clear or very clear; 6) The expert committee and the developer approved the final documents. The agreement rate and CVI were ≥ 0.80 for all items of the scale final version. The process of cross-cultural adaptation followed all necessary stages and the semantic validity results were adequate, providing the Brazilian version of the AIR to assess anxiety symptoms in patients with COPD.

Sex differences and determinants of anxiety symptoms in patients with COPD initiating pulmonary rehabilitation

BackgroundAnxiety is common in patients with chronic obstructive pulmonary disease (COPD). However, there is little evidence available regarding gender differences, and severity of dyspnea in relation to anxiety in patients with COPD. AimsWe examined gender differences and the association of dyspnea with anxiety in a cohort of patients with COPD prior to entering a pulmonary rehabilitation (PR) program. MethodWe analyzed data from a prospective cohort of COPD patients who attended PR from 2013 to 2019 in Lytham, Lancashire, UK. Patients were aged 40 years or older with a post-bronchodilation forced expiratory volume in 1 s (FEV1) less than 80 % of the predicted normal value and FEV1/FVC (forced vital capacity) ratio less than 0.7. We assessed quality of life (QoL) using the Saint George's Respiratory Questionnaire (SGRQ), anxiety using the Anxiety Inventory for Respiratory disease (AIR), dyspnea using the modified Medical Research Council (mMRC) scale, and exercise capacity using the Incremental Shuttle Walk Test (ISWT). ResultsNine hundred ninety-three patients with COPD (mean age = 71 years, FEV1/FVC = 58 % predicted, 51 % male) entered the PR program. Of these, 348 (35 %) had anxiety symptoms (AIR ≥8); of these 165 (47 %) were male and 183 (53 %) female, (χ2 = 3.33, p = 0.06). On logistic multivariate analysis, the following variables were independently associated with elevated anxiety: younger age (p < 0.001), female sex (p = 0.03), higher SGRQ-total score (p < 0.001) and high FEV1/FVC (p < 0.002). Dyspnea was associated with anxiety r = 0.25, p < 0.001. ConclusionOver a third of COPD patients had clinically relevant anxiety symptoms with a higher prevalence in women than men. Anxiety was associated with younger age, female gender, and impaired QoL. Early recognition and treatment of anxiety in patients with COPD is worthy of consideration for those attending PR, especially women.

Psychometric Validity of the Anxiety Inventory for Respiratory Disease (AIR) Scale in an Indian Sample of Chronic Obstructive Pulmonary Disease: A Cross-Sectional Study.

Introduction Researchers have found that chronic obstructive pulmonary disease (COPD)patients suffer from anxiety more than the general population.The Anxiety Inventory for Respiratory Disease (AIR) scale has been primarily used to assess non-somatic anxiety in COPD patients. The validity of AIR among COPD patients has not been evaluated in Indian settings. Therefore, this study was undertaken to determine the validity of AIR in these patients. The study aimed to evaluate concurrent criterion and discriminative validity of the AIR screening scale among patients with COPD using Mini International Neuropsychiatric Interview (MINI) 7.0.2 as the gold standard measure for diagnosing Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) anxiety disorders. Materials and methods A cross-sectional study was conducted in the Outpatients Department (OPD) of the Department of Pulmonary Medicine, All India Institute of Medical Sciences (AIIMS), New Delhi, from August 2018 to July 2019. A total of 100 patients diagnosed with COPD and aged 30 or above were recruited. All participants were further assessed in person by a psychiatry resident doctor using semi-structured proforma, MINI7.0.2, and AIRDisease (Hindi). Mann-Whitney U and receiver operating characteristic (ROC) curves were conducted. The two-sided p-value of less than 0.05 was considered to be statistically significant. Results To assess the concurrent criterion validity of the AIR scale for screening clinical anxiety disorders, the ROCcurve was constructed using MINI diagnoses of anxiety disorder as the gold standard measure. A cut-off score of 5.5 was found to maximize both the specificity and sensitivity of the AIR scale for screening anxiety disorders among COPD patients with COPD. The AIR scale showed a high sensitivity (95%) and specificity (89%) at this cut-point. Conclusion The findings of this studyrecommend a cut-off score of 5.5 on the AIR scale instead of 8 in previous studies, as maintaining the previously recommended cut-offs in Indian settings may lead to an increase in false negatives. This could have negative consequences for patients seeking treatment. Further studies may be planned to explore the psychometric properties of the current tool in a larger population.

Impact of Psychological Factors on Functional Performance among Patients with Chronic Obstructive Pulmonary Disease.

The role of anxiety and depression in functional performance during walking in patients with chronic obstructive pulmonary disease (COPD) is controversial. In this cross-sectional study, we aimed to assess the effects of anxiety, depression, and health-related quality of life (HRQOL) on the functional performance of this patient population. Seventy COPD patients aged 63 ± 11 years participated in the study. To measure their functional performance, the six-minute walk test (6MWT) was used. Anxiety and depression were assessed using two questionnaires: the Anxiety Inventory for Respiratory Disease (AIR) scale and the Hospital Anxiety and Depression Scale (HADS). The St. George’s Respiratory Questionnaire (SGRQ) was used to assess HRQOL. Based on their anxiety levels, the patients were divided into a no anxiety group and a high anxiety group. There were no significant differences between the two groups in terms of pulmonary function profile or smoking status. The mean AIR and HADS (depression) scores were high (12.78 ± 4.07 and 9.90 ± 3.41, respectively). More than one-third of the patients (46%) reported high anxiety levels (above the standard cutoff score of 8). The mean score of the aggregated HADS scale was significantly higher in the high anxiety group (20.87 ± 6.13) than in the no anxiety group (9.26 ± 4.72; p = 0.01). Patients with high anxiety had poorer functional performance (6MWT: 308.75 ± 120.16 m) and HRQOL (SGRQ: 56.54 ± 22.36) than patients with no anxiety (6MWT: 373.76 ± 106.56 m; SGRQ: 42.90 ± 24.76; p < 0.01). The final multivariate model explained 33% of the variance in functional performance after controlling for COPD severity (F = 8.97). The results suggest that anxiety, depression, and poor health status are significantly associated with poor functional performance. This study highlights the need to screen patients with COPD at all stages for anxiety and depression.

Predictors of premature discontinuation and prevalence of dropouts from a pulmonary rehabilitation program in patients with chronic obstructive pulmonary disease

IntroductionTo date, very little is known about the risk factors that contribute to premature discontinuation (dropout) from pulmonary rehabilitation (PR) in patients with chronic obstructive pulmonary disease (COPD). We examined prevalence and predictors of premature discontinuation in patients who participated in an eight week PR program. MethodsWe analyzed a prospectively maintained data-base of patients with COPD who attended a PR program from 2013 to 2019. We included patients 40 years or older with forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC) ratio less than 0.7. Subjects were assigned completers or non-completers based on whether they completed the 8-week PR program. Quality of life was measured using the St-George's Respiratory Questionnaire (SGRQ), anxiety using the Anxiety Inventory for Respiratory disease (AIR), dyspnea using the modified Medical Research Council (mMRC) scale, and exercise capacity using the Incremental Shuttle Walk Test (ISWT). ResultsNine hundred nighty three COPD patients (mean age = 70.82 years, FEV1 = 59.21% predicted, 51% male) entered the PR program. Of these, 259 (26%) discontinued PR prematurely and 139 (53%) were male. Compared with completers, non-completers had elevated symptoms of dyspnea and anxiety, had reduced exercise tolerance, were younger, and had poorer quality of life at entry (all p < 0.05). On multivariate analysis, the following variables were independently associated with discontinuation from PR: younger age (p < 0.001), elevated symptoms of anxiety (p < 0.001), elevated symptoms of dyspnea (p < 0.01) and reduced exercise tolerance (p < 0.002). ConclusionOver a quarter of COPD patients discontinued the PR program prematurely. Discontinuation of PR was associated with younger age, elevated symptoms of dyspnea and anxiety, and reduced exercise capacity, but not with severity of airflow obstruction.

Psychometric properties of the Arabic version of the anxiety inventory for respiratory disease in patients with COPD

Purpose The Anxiety Inventory for Respiratory Disease (AIR) is a reliable and valid scale for examining the anxiety in patients with COPD. This study aimed to cross-culturally adapt and translate the original AIR scale into the Arabic language and to examine its reliability and validity in Arab patients with COPD. Material and Methods This was a validation study conducted on 70 Arabic patients with COPD. The AIR-A and the Hospital Anxiety and Depression Scale (HADS) were completed on the first assessment. After two weeks, 55 patients completed the AIR-A scale again. The reliability was assessed by Cronbach’s α and intraclass correlation coefficients (ICC2,1). Exploratory factor analysis (EFA), and the confirmatory factor analysis (CFA) were used to measure the structural validity. The construct validity was also explored. Results The AIR-A questionnaire had a Cronbach’s α of 0.91 and ICC2,1 of 0.86. The EFA revealed that the AIR-A was unidimensional. The CFA showed the single-factor model required minor modifications to reach the best fit. The AIR-A was correlated with the HADS- anxiety (r = 0.89, p < 0.001). Conclusion The Arabic version of AIR scale is reliable, and valid for assessing the anxiety disorder in Arabic speaking patients with COPD worldwide. Implications for Practice The Arabic version of AIR will be useful for examining anxiety in Arabic speaking patients with COPD worldwide. The Arabic version of AIR will help clinicians to monitor the effect of interventions in Arabic speaking patients with COPD who suffer from anxiety. The Arabic version of AIR assess only the anxiety.

The Coronavirus Anxiety in the Elderly: The Role of Coping Styles with Stress and Meta-Worry

The Coronavirus Anxiety in the Elderly: The Role of Coping Styles with Stress and Meta-Worry

Role of the active cycle of breathing technique combined with phonophoresis for the treatment of patients with chronic obstructive pulmonary disease (COPD): study protocol for a preliminary randomized controlled trial

BackgroundChronic obstructive pulmonary disease (COPD) is a chronic inflammatory lung disease characterized by coughing, the production of excess sputum, and dyspnea. Patients with excessively thick sputum may have frequent attacks or develop more serious disease. The guidelines recommend airway clearance for patients with excessive sputum who are hospitalized with COPD. The active cycle of breathing technique is the most common non-pharmacological airway clearance technique used by physiotherapists. However, the effectiveness of the technique is not always guaranteed. Active cycle of breathing techniques require the initial dilution of the sputum, usually by inhalation drugs, which may have limited effects. Recent studies have found that phonophoresis decreases inflammation, suggesting the potential of the combined usage of active cycle of breathing techniques and phonophoresis. Therefore, the aim of this study is to explore the effectiveness and safety of combining active cycle of breathing technique and phonophoresis in treating COPD patients.Methods and analysisWe propose a single-blind randomized controlled trial using 75 hospitalized patients diagnosed with COPD with excessive sputum production. The patients will be divided into three groups. The intervention group will receive active cycle of breathing techniques combined with phonophoresis. The two comparison groups will be treated with active cycle of breathing techniques and phonophoresis, respectively. The program will be implemented daily for 1 week. The primary outcomes will be changes in sputum viscosity and production, lung function, and pulse oximetry. Secondary outcomes include the assessment of COPD and anxiety, measured by the COPD Assessment Test scale and the Anxiety Inventory for Respiratory Disease, respectively; self-satisfaction; the degree of cooperation; and the length of hospital stay. All outcome measures, with the exception of sputum production and additional secondary outcomes, will be assessed at the commencement of the study and after 1 week’s intervention. Analysis of variance will be used to investigate differences between the groups, and a p-value of less than 0.05 (two-tailed) will be considered statistically significant.DiscussionThis study introduces a combination of active cycle of breathing techniques and phonophoresis to explore the impact of these interventions on patients hospitalized with COPD. If this combined intervention is shown to be effective, it may prove to be a better treatment for patients with COPD.Trial registrationThe trial was registered prospectively on the Chinese Clinical Trial Registry on 24 December 2019.ClinicalTrials.gov ChiCTR1900028506. Registered on December 2019.

Long-Term Benefits of Pulmonary Rehabilitation in Patients With COPD: A 2-Year Follow-Up Study

Pulmonary rehabilitation (PR) improves exercise capacity in patients with COPD in the short term. In patients with COPD, does 8weeks of PR confer long-term benefits on symptoms of dyspnea, anxiety, and depression, and on quality of life, 2 years after completion? One hundred and sixty-five patients with COPD completed an 8-week, community-based, comprehensive PR program, comprising 2-h sessions twice weekly. Sessions included aerobic exercise and an educational program. Patients were encouraged to perform daily walking exercise up to 30min at home. We evaluated a number of outcome measures at baseline, 8weeks, and 2 years, including the following: dyspnea measured with the modified Medical Research Council (mMRC) questionnaire, quality of life assessed with the St. George's Respiratory Questionnaire (SGRQ), and anxiety measured with the Anxiety Inventory for Respiratory Disease (AIR) and the Depression Anxiety Stress Scale (DASS). In addition, we measured exercise capacity, using the Incremental Shuttle Walk Test (ISWT), at baseline and 8weeks. Mean age (SD) was 72 (8.6) years; 55%were men. At 8weeks, improvements in mMRC, SGRQ, ISWT, DASS, and AIR were all statistically significant (P< .001). During the 2-year follow-up, changes observed at 8weeks were maintained for anxiety symptoms, and for symptoms, impact, and total SGRQ scores. In multivariate analysis, initial elevated levels of dyspnea, depression, anxiety, and decreased exercise capacity predicted greater quality of life improvement at 2 years (all P< .001). Over a 2-year period, an effective 8-week PR program provides sustained improvement in anxiety and quality of life. Short-term improvements in dyspnea, depression, and stress symptoms at 8weeks were not maintained at 2 years.

The responsiveness of the Manchester Chronic Obstructive Pulmonary Disease Fatigue Scale to pulmonary rehabilitation.

Background:We examined the responsiveness of the Manchester Chronic Obstructive Pulmonary Disease (COPD) Fatigue Scale (MCFS) in patients with COPD following 8 weeks of pulmonary rehabilitation (PR).Methods:Patients (n = 273) with clinically stable COPD completed 8 weeks of outpatient multidisciplinary PR, comprising 2 h (1 h exercise and 1 h education) weekly. Anxiety, exercise capacity, quality of life, dyspnea, fatigue were measured pre- and post-PR, utilizing the Anxiety Inventory for Respiratory Disease (AIR), Incremental Shuttle Walk Test (ISWT), St. George’s Respiratory Questionnaire (SGRQ), and modified Medical Research Council (mMRC) scale and MCFS, respectively.Results:The mean (SD) age of participants was 72 (8) years, and 50% were women. Total MCFS score fell after PR mean (95% confidence interval) −4.89 (–7.90 to −3.79) as did domain scores: physical −1.89 (–2.33 to −1.46), cognition −1.37 (–1.65 to −1.09), and psychosocial −1.62 (–2.00 to −1.62). Total MCFS effect size (ES) was 0.55; and for domains, physical was 0.52, cognition was 0.59, and psychosocial was 0.51. The ES for AIR was 0.30, mMRC was 0.38, SGRQ was 0.66, and ISWT was 1.19. MCFS changes correlated with changes in both SGRQ (p < 0.002) and AIR (p < 0.004), but not ISWT (p = 0.30) or mMRC (p = 0.18). The AIR, SGRQ, mMRC, and ISWT all improved after PR (all, p < 0.001).Conclusion:The MCFS scale is a valid and responsive scale to measure fatigue in patients with COPD after pulmonary rehabilitation.

Validity and Responsiveness of the Depression Anxiety Stress Scales-21 (DASS-21) in COPD

We examined the validity and responsiveness of the Depression Anxiety and Stress Scales-21 (DASS-21) in patients with COPD following an 8-week pulmonary rehabilitation program (PRP). Five hundred and fifty-seven patients with clinically stable COPD completed an 8-week outpatient multidisciplinary PRP, comprising 2h (1h of exercise and 1h of education) per week. Anxiety, exercise capacity, quality of life, and dyspnea were measured pre- and post-PRP, utilizing the Anxiety Inventory for Respiratory Disease, Incremental Shuttle Walk Test, St. George's Respiratory Questionnaire, and modified Medical Research Council dyspnea scale, respectively. In addition, we administered the DASS-21 to assess both the validity and responsiveness of this tool compared with other, well-established metrics. The mean (SD) age of participants was 71.6 (9.4) years, and 49%were women. The DASS-21 reflected responsiveness to pulmonary rehabilitation. Among participants with a high depression score (> 9), the depression subscale score fell from 18.62 pre-PRP to 13.12 post-PRP (P< .001). Similarly, among participants with a high anxiety score (> 7), the anxiety subscale fell from 14.60 pre-PRP to 10.99 post-PRP (P< .001). Likewise, among participants with a high stress score (> 14), the stress subscale score fell from 23.51 pre-PRP to 16.34 post-PRP (P< .001). Among these subsamples, the effect size was medium at 0.49 for depression and 0.54 for anxiety, and large at 0.81 for stress. The change in DASS-21 subset (depression, anxiety, and stress) correlated with the change in total SGRQ score, at P< .001. The DASS-21 has acceptable validity and is a responsive scale for use in PRP in patients with COPD.

Test Performance Characteristics of the AIR, GAD-7, and HADS-Anxiety Screening Questionnaires for Anxiety in Chronic Obstructive Pulmonary Disease.

Rationale: Anxiety is a common comorbidity of chronic obstructive pulmonary disease (COPD) that is associated with higher morbidity and mortality. We evaluated three anxiety screening questionnaires: the Generalized Anxiety Disorder 7-Item Scale (GAD-7), the Hospital Anxiety and Depression Scale Anxiety subscale (HADS-A), and the Anxiety Inventory for Respiratory Disease (AIR).Objectives: To evaluate and compare the test performance characteristics of three anxiety screening questionnaires, using the Mini-International Neuropsychiatric Interview (MINI), version 7.0, as the "gold standard."Methods: Individuals with COPD were recruited at 16 centers. The MINI and questionnaires were administered by trained research coordinators at an in-person visit and readministered by telephone 2-4 weeks later. A composite score for the presence of any Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-V) anxiety disorder was computed, based on the MINI as the gold standard, compared with a participant screening positive on self-report measures for these analyses.Results: Two hundred and twenty eligible individuals with COPD were enrolled; 219 completed the study. Eleven percent were identified as having a DSM-V anxiety disorder, based on the MINI. Elevated anxiety symptoms based on questionnaires were 38% for the AIR, 30% for the GAD-7, and 20% for the HADS-A. Area under the receiver operating characteristic curve (AUC) was highest for the GAD-7 (0.78; 95% confidence interval [CI], 0.69-0.87), followed by the HADS-A (0.74; 95% CI, 0.64-0.84) and the AIR (0.66; 95% CI, 0.56-0.76). The AUC for the GAD-7 was significantly greater than for the AIR (P = 0.014). Sensitivity was not statistically different among the questionnaires: 77% for the GAD-7, 63% for the HADS-A, and 66% for the AIR. The HADS-A had the highest specificity, 85%, which was significantly higher than that of the GAD-7 (77%; P < 0.001) and the AIR (65%; P < 0.001); GAD-7 specificity was higher than AIR specificity (P < 0.001).Conclusions: Symptoms of anxiety among patients with COPD as identified by screening questionnaires were common and significantly higher than the prevalence of anxiety disorder meeting DSM-V criteria. The GAD-7, the HADS-A and the AIR questionnaires had fair to moderate psychometric properties as screening tools for anxiety in individuals with COPD, indicating the need for improved measures for this patient population.

Predictors of Quality of Life in COPD Patients Following Pulmonary Rehabilitation

SESSION TITLE: Pulmonary Rehabilitation SESSION TYPE: Original Investigation Slide PRESENTED ON: Monday, October 30, 2017 at 07:30 AM - 08:30 AM PURPOSE: Pulmonary rehabilitation (PR) improves quality of life (QoL) in patients with COPD in the short-term. However, its determinants of QoL following PR in the long-term are not well understood. We examined predictors of QoL of COPD patients who completed an 8-week PR in 2 years follow-up. METHODS: We conducted an eight-week PR program in a community-based setting. The PR comprised of 1 hour strength and aerobic exercises and 1 hour educational program. Patients completed the following outcome measures at baseline, eight and 104 weeks: dyspnoea measured by Medical Research Council (nMRC), quality of life measured by St-Georges Respiratory Questionnaire (SGRQ), exercise capacity by Incremental shuttle walk test (ISWT), depression by depression, anxiety and stress scale and anxiety (DASS) and anxiety assessed by anxiety inventory for respiratory disease (AIR). RESULTS: 165 COPD patients who completed the eight weeks PR followed for two years. Multivariate regression analysis of predictors of better QoL were satisfaction with the service, low dyspnoea, anxiety and depression scores and higher exercise capacity contributed to adjusted R-squared of 55% of the variance. Of these, 1% of the variance was predicted by satisfaction of service, 2% by anxiety using AIR, 5% by dyspnoea using nMRC, 14% by exercise capacity and 17% by depression DASS, respectively. Gender, age, smoking status and severity of lung function impairment were not associated with QoL. CONCLUSIONS: The clinical variables that predicted better quality of life were low anxiety, dyspnoea, depression score and higher exercise capacity. Physiological and behavioural factors were not related to QoL. CLINICAL IMPLICATIONS: Encouraging patients to engage in self-management and maintenance exercise programme following PR is worthy of consideration. DISCLOSURE: The following authors have nothing to disclose: Abebaw Yohannes, Sheila Dryden, Nicola Hanania No Product/Research Disclosure Information

Psychometric properties of the Anxiety Inventory for Respiratory Disease in patients with COPD in China.

BackgroundAnxiety is a common comorbidity in patients with COPD in China, and it can significantly decrease patients’ quality of life. Almost all anxiety measurements contain somatic items that can overlap with symptoms of COPD and side effects of medicines, which can lead to bias in measuring anxiety in patients with COPD. Therefore, a brief and disease-specific non-somatic anxiety measurement scale, the Anxiety Inventory for Respiratory Disease (AIR), which has been developed and validated in its English version, is needed for patients with COPD in China.MethodsA two-center study was conducted in two tertiary hospitals in Tianjin, China. A total of 181 outpatients with COPD (mean age 67.21±8.10 years, 32.6% women), who met the inclusion and exclusion criteria, were enrolled in the study. Test–retest reliability was examined using intraclass correlation coefficients. The internal consistency was calculated by Cronbach’s α. Content validity was examined using the Content Validity Index (CVI), scale-level CVI/universal agreement, and scale-level CVI/average agreement (S-CVI/Ave). Besides, convergent validity and construct validity were also examined.ResultsThe AIR-C (AIR-Chinese version) scale had high test–retest reliability (intraclass correlation coefficient =0.904) and internal consistency (Cronbach’s α=0.914); the content validity of the AIR-C scale was calculated by CVI, scale-level CVI/universal agreement, and S-CVI/Ave at values of 0.89–1, 0.90, and 0.98, respectively. Meanwhile, the AIR-C scale had good convergent validity, correlating with the Hospital Anxiety and Depression Scale-Anxiety (r=0.81, P<0.01), and there were significant correlations between the AIR-C and Clinical COPD Questionnaire (CCQ; r=0.44, P<0.01) and Activities of Daily Living Scale (ADLS; r=0.36, P<0.01). A two-factor model of general anxiety and panic symptoms in the AIR-C scale had the best fit according to Confirmatory Factor Analysis (CFA).ConclusionThe AIR-C scale had a good reliability and validity for patients with COPD and can be used as a user-friendly and valid tool for measuring anxiety symptoms among patients with COPD in China.

The Development and Validation of the Anxiety Inventory for Respiratory Disease

Anxiety is a common comorbidity in patients with COPD, yet it remains underrecognized. Existing anxiety measures contain somatic items that can overlap with symptoms of COPD and side effects of medications. There is a need for a disease-specific nonsomatic anxiety scale to screen and measure anxiety in patients with COPD. In phase 1, 88 patients with COPD (mean age 71 years, 36% men) completed a 16-item scale developed with patients and clinicians. Six items were removed using item and factor analysis. In phase 2, 56 patients with COPD (mean age 70 years, 48% men) completed the 10-item scale and other self-report measures of anxiety, quality of life, and functional limitations. Of these, 41 patients completed the scale on a second occasion, 14 days later. Construct validity (using confirmatory factor analysis [CFA]), discriminant validity, convergent validity, and anxiety screening accuracy were explored. The Anxiety Inventory for Respiratory Disease (AIR) had high internal consistency (Cronbach α = 0.92) and test-retest reliability (intraclass correlation coefficient = 0.81) and excellent convergent validity, correlating with the Hospital Anxiety and Depression-Anxiety subscale (r = 0.91, P &lt; .001). The scale also discriminated between patients with clinical anxiety (measured using the Patient Health Questionnaire) and those without (U = 9, P &lt; .001). A cutoff score of 14.5 yielded a sensitivity of 0.93 and specificity of 0.98 for detection of clinical anxiety. A two-factor model of general anxiety and panic symptoms had the best fit according to CFA. The AIR is a short, user-friendly, reliable, and valid scale for measuring and screening anxiety in patients with COPD.

S93 The development of a novel scale to screen and measure anxiety in patients with chronic obstructive pulmonary disease (COPD)

Introduction and objectives Comorbid anxiety disorders are common among patients with COPD, affecting up to half of all patients. Comorbid anxiety may be a significant factor in predicting quality of life, yet recognition and management of anxiety among this patient group is poor. Screening and measuring symptoms of anxiety can be challenging due to the overlap of physical symptoms and the lack of a validated disease-specific tool. The aim of this study was to develop a novel non-somatic scale (Anxiety Inventory for Respiratory disease (AIR)) to screen and measure anxiety in patients with COPD. Methods This study utilised a multi-method approach to scale development incorporating both qualitative and quantitative methods. An item pool was developed using in-depth interviews with COPD patients who exhibited symptoms of anxiety (n=14), and the analysis of existing anxiety scales. Item wording, content and user-friendliness were checked by an expert reference group (ERG) that included clinicians and patients. This item pool was tested on a group of COPD patients (n=82). The Likert-type scale has four consistent responses to statements (Not at all, Occasionally, Frequently, Almost all of the time) that are scored from 0 to 3. Item and factor analysis were carried out to aid in item reduction and to explore the factor structure. Results Sixteen items were selected for inclusion following development and approval from the ERG. Items were retained based on item-to-total correlation analysis and α-if-item-deleted analysis. One item was discarded as it had a corrected-item-to-total correlation of Conclusions The AIR is a short self-report non-somatic anxiety scale with a clear uni-dimensional factor solution and high internal consistency. Additional studies are warranted to further explore the scale9s psychometric properties and to establish its ability to screen for clinical anxiety disorders.