AIM: To compare the psychometric properties between the Hospital Anxiety and Depression Scale (HADS) and General Health Questionnaire-version 20 (GHQ-20) in detecting psychological distress in COPD patients referred to pulmonary rehabilitation, and to examine the factor structure of GHQ-20. METHODS: The study comprised 161 consecutive patients with mild to very severe COPD. For comparison of mean scores between the HADS and GHQ-20, one sample t-test was used. Potential differences in the detection of possible and normal cases were analysed using Pearson Chi square test. We report Pearson's correlations within and between the questionnaires, and internal consistency was assessed through Chronbach's alpha. The factor structure of the GHQ-20 was examined through principal axis factoring (PAF) with oblique rotation and eigenvalue >1. RESULTS: There were no differences in mean scores of psychological distress between HADS and GHQ-20 (12.03 vs. 24.73, p = 0.000), as well as no differences in the prevalence of possible cases of psychological distress (34.6 vs. 36.9, p = 0.000) and normal cases (65.4 vs. 63.1, p = 0.000). The observed difference between HADS and GHQ-20 regarding internal consistency was marginal, with Chronbach's alpha coefficients of 0.91 and 0.94, respectively. The PAF analysis resulted in a three-factor solution for GHQ-20, notably with only two items loading on the third factor, giving an internal consistency <0.70. A two-factor solution, comprising anxiety/depression and coping, may therefore be more appropriate. CONCLUSIONS: This study demonstrates no significant differences between the HADS and GHQ-20 in their ability to detect possible cases of psychological distress in a rehabilitation setting for COPD patients. Although the HADS and GHQ-20 are measuring different concepts of psychological distress, both questionnaires can be recommended as screening tools for detection of psychological distress in COPD inpatients. The GHQ-20 appears to be two-dimensional, comprising anxiety/depression as one dimension, and coping as the other dimension.
AIM: To compare the psychometric properties between the Hospital Anxiety and Depression Scale (HADS) and General Health Questionnaire-version 20 (GHQ-20) in detecting psychological distress in COPDpatients referred to pulmonary rehabilitation, and to examine the factor structure of GHQ-20. METHODS: The study comprised 161 consecutive patients with mild to very severe COPD. For comparison of mean scores between the HADS and GHQ-20, one sample t-test was used. Potential differences in the detection of possible and normal cases were analysed using Pearson Chi square test. We report Pearson's correlations within and between the questionnaires, and internal consistency was assessed through Chronbach's alpha. The factor structure of the GHQ-20 was examined through principal axis factoring (PAF) with oblique rotation and eigenvalue >1. RESULTS: There were no differences in mean scores of psychological distress between HADS and GHQ-20 (12.03 vs. 24.73, p = 0.000), as well as no differences in the prevalence of possible cases of psychological distress (34.6 vs. 36.9, p = 0.000) and normal cases (65.4 vs. 63.1, p = 0.000). The observed difference between HADS and GHQ-20 regarding internal consistency was marginal, with Chronbach's alpha coefficients of 0.91 and 0.94, respectively. The PAF analysis resulted in a three-factor solution for GHQ-20, notably with only two items loading on the third factor, giving an internal consistency <0.70. A two-factor solution, comprising anxiety/depression and coping, may therefore be more appropriate. CONCLUSIONS: This study demonstrates no significant differences between the HADS and GHQ-20 in their ability to detect possible cases of psychological distress in a rehabilitation setting for COPDpatients. Although the HADS and GHQ-20 are measuring different concepts of psychological distress, both questionnaires can be recommended as screening tools for detection of psychological distress in COPD inpatients. The GHQ-20 appears to be two-dimensional, comprising anxiety/depression as one dimension, and coping as the other dimension.
Authors: Andrew R Levy; Bashir Matata; Sam Pilsworth; Adrian Mcgonigle; Lyndsey Wigelsworth; Linda Jones; Nicola Pott; Max Bettany; Adrian W Midgley Journal: Pilot Feasibility Stud Date: 2018-01-27
Authors: Narelle S Cox; Aroub Lahham; Christine F McDonald; Ajay Mahal; Paul O'Halloran; Graham Hepworth; Lissa Spencer; Renae J McNamara; Janet Bondarenko; Heather Macdonald; Samantha Gavin; Angela T Burge; Caitlin Le Maitre; Cade Ringin; Elizabeth Webb; Amanda Nichols; Ling-Ling Tsai; Nia Luxton; Stephanie van Hilten; Mary Santos; Hayley Crute; Megan Byrne; Helen Boursinos; Jennifer Broe; Monique Corbett; Tunya Marceau; Brooke Warrick; Claire Boote; Joanna Melinz; Anne E Holland Journal: BMJ Open Respir Res Date: 2021-11
Authors: Narelle S Cox; Christine F McDonald; Jennifer A Alison; Ajay Mahal; Richard Wootton; Catherine J Hill; Janet Bondarenko; Heather Macdonald; Paul O'Halloran; Paolo Zanaboni; Ken Clarke; Deidre Rennick; Kaye Borgelt; Angela T Burge; Aroub Lahham; Bruna Wageck; Hayley Crute; Pawel Czupryn; Amanda Nichols; Anne E Holland Journal: BMC Pulm Med Date: 2018-05-15 Impact factor: 3.317
Authors: Ratna Sohanpal; Hilary Pinnock; Liz Steed; Karen Heslop Marshall; Claire Chan; Moira Kelly; Stefan Priebe; C Michael Roberts; Sally Singh; Melanie Smuk; Sarah Saqi-Waseem; Andy Healey; Martin Underwood; Patrick White; Chris Warburton; Stephanie J C Taylor Journal: Trials Date: 2020-01-06 Impact factor: 2.279