Validity and reliability of the Patient Health Questionnaire-8 in Swedish for individuals with systemic sclerosis

Mattsson, Malin; Sandqvist, Gunnel; Hesselstrand, Roger; Nordin, Annika; Boström, Carina

doi:10.1007/s00296-020-04641-1

Cited by 10 publications

(9 citation statements)

References 42 publications

(72 reference statements)

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“…Scores can range from 0 to 24 and higher scores indicate more depressive symptoms (30). The PHQ-8 in Swedish has been validated for individuals with SSc (31).…”

Section: Patient-reported Outcome Measuresmentioning

confidence: 99%

Validity and reliability of the Swedish version of the Self-Efficacy for Managing Chronic Disease scale for individuals with systemic sclerosis

Mattsson

Sandqvist

Hesselstrand

et al. 2021

Scandinavian Journal of Rheumatology

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ObjectiveTo investigate aspects of validity and reliability of the Swedish version of the Self-Efficacy for Managing Chronic Disease (SEMCD-Swe) scale in systemic sclerosis (SSc). Method: A forward-backward translation procedure was used. Content validity was assessed through interviews with 11 people with SSc and 10 healthcare professionals. Construct validity, internal consistency, test-retest reliability, and floor and ceiling effects were evaluated in 104 SSc patients. Results: The content validity of the SEMCD-Swe was interpreted as satisfactory, but some adjustments were made to increase the understanding. Confirmatory factor analysis supported a single-factor structure. Moderate to strong correlations between the SEMCD-Swe and Scleroderma Health Assessment Questionnaire; Multidimensional Assessment of Fatigue; Patient Health Questionnaire-8 (r s = −0.4 to −0.7), and RAND-36 subscales (r s = 0.5 to 0.7) were found. Weak correlations were found between SEMCD-Swe and modified Rodnan skin score; and disease severity of peripheral vascular and lung (r s = −0.1 to −0.2) and kidney (r s = 0.1) systems (Medsger severity scale). Cronbach's alpha was sufficient (0.85) and corrected item-to-total correlations were good (≥ 0.50). The intraclass correlation coefficient for the total score was sufficient (0.82). No floor or ceiling effects were found. Conclusion: Support for construct validity was indicated, as the SEMCD-Swe in SSc show a single-factor structure and is more strongly associated with pain, fatigue, depressive symptoms, interferences with daily activities, disability, and quality of life than with disease severity. Our results also indicate support for content validity and reliability. However, the responsiveness of the SEMCD-Swe needs to be tested. Systemic sclerosis (SSc) is a rare autoimmune inflammatory disease characterized by vasculopathy and fibrosis in skin and internal organs. The disease is commonly divided into two subtypes with regard to the extent of skin involvement: limited cutaneous (lcSSc) or diffuse cutaneous systemic sclerosis (dcSSc) (1). The clinical course can vary from limited skin thickening to severe organ damage and high mortality (2). Common disease manifestations are Raynaud's phenomenon, digital ulcers (1), joint involvement, and reduced hand function (3). Pain, fatigue (4), gastro-oesophageal reflux, exertional breathlessness (1), and proximal muscle weakness (5) are also common. Depressive symptoms, emotional distress, and concerns about appearance due to skin changes have also been described (4, 6). Thus, people with SSc may face a diversity of disease manifestations, with limitations in their daily lives (7, 8) and reduced health-related quality of life (HRQoL) (9).Self-efficacy, which is the belief in one's capabilities to produce given achievements (10), is an essential factor for self-management of chronic diseases, behaviours, and behavioural changes (11). Among people with SSc, a relatively

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“…Scores can range from 0 to 24 and higher scores indicate more depressive symptoms (30). The PHQ-8 in Swedish has been validated for individuals with SSc (31).…”

Section: Patient-reported Outcome Measuresmentioning

confidence: 99%

Validity and reliability of the Swedish version of the Self-Efficacy for Managing Chronic Disease scale for individuals with systemic sclerosis

Mattsson

Sandqvist

Hesselstrand

et al. 2021

Scandinavian Journal of Rheumatology

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“…Their own results support the two-factor structure of the questionnaire. Similarly, Mattsson, Sandqvist [ 31 ] found a two-factor structure for the PHQ-8. A two-factor structure was also found in a sample of patients with chronic heart failure [ 32 ].…”

Section: Introductionmentioning

confidence: 85%

Longitudinal measurement invariance of the patient health questionnaire in a German sample

et al. 2021

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Background The Patient Health Questionnaire-8 (PHQ-8) is a screening questionnaire of depressive symptoms. However, it is unknown whether it is equivalent across time and between groups of individuals. The aim of our paper was to test whether the PHQ-8 has the same meaning in two groups of individuals over time. Methods Primary care patients were proactively recruited from three German cities. PHQ-8 data from a baseline assessment (n = 588), two assessments during the intervention (n = 246/225), and a six (n = 437) and 12 months (n = 447) follow-up assessment were first used to examine the factor structure of the PHQ-8 by confirmatory factor analysis (CFA). The best fitting factor solution was then used to test longitudinal invariance across time and between intervention and control group by Multiple Group CFA. Results A two-factor structure consistently showed the best model fit. Only configural longitudinal invariance was evidenced when the baseline assessment was included in the analysis. Without the baseline assessment, strict longitudinal invariance was shown across the intervention and the follow-up assessments. Scalar invariance was established between the intervention and control group for the baseline assessment and strict invariance between groups and across the 6- and 12-month follow-up assessments. Conclusions The lack of longitudinal invariance might be attributed to various differences between the baseline assessments and all following assessments, e.g., assessment mode (iPad vs telephone), potential changes in symptom perception, and setting. Trial registration DRKS00011635, date of trial registration: 20.01.2017; DRKS00011637, date of trial registration: 25.01.2017.

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“…The development literature for the PHQ-8 suggests that the scale is measuring one factor ( Kroenke et al , 2009 ). However, previous literature has suggested that in some populations, a two-factor model may present a more accurate model fit ( Mattsson et al , 2020 ). Furthermore, there is evidence from work done with both the PHQ-8 and PHQ-9 that suggests a bifactor model, which estimated model fit based on a general factor of depression as well as two latent variables, is the superior model ( Doi et al ., 2018 ; Dong et al ., 2019 ; Fischer et al , 2021 ).…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, this study examined a single factor, a two-factor, and a bifactor model. For both the two-factor model and bifactor model, the two latent variables specified were cognitive/affective aspects of depression (items 1, 2, 6 and 7) and somatic aspects of depression (items 3, 4, 5 and 8) ( Mattsson et al , 2020 ).…”

Section: Methodsmentioning

confidence: 99%

“…The eight-item Patient Health Questionnaire (PHQ-8) is a brief measure designed to detect the presence and severity of depressive symptoms in adults ( Kroenke et al , 2002 ). This measure has demonstrated acceptable internal consistency reliability, test–retest reliability, construct validity, factorial invariance and concurrent validity in Mexican and Central American descent university students residing in the USA, adults from Sweden with Systematic Sclerosis, and Latino/a university students living in the USA ( Alpizar et al , 2018a , b ; Mattsson et al , 2020 ). To the best of our knowledge, the psychometric properties of the PHQ-8 have not been previously evaluated in a sample of mothers who conceived using ART.…”

Section: Introductionmentioning

confidence: 99%

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Reliability and validity of the PHQ-8 in first-time mothers who used assisted reproductive technology

Pavlov

Egan²,

Limbers

2022

Human Reproduction Open

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Study question Is the Patient Health Questionnaire-8 (PHQ-8) a valid and reliable measure of depression in first-time mothers who conceived via Assisted Reproductive Technology? Summary answer The results from this study provide initial support for the reliability and validity of the PHQ-8 as a measure of depression in mothers who have conceived using ART. What is known already Women who achieved a clinical pregnancy using Assisted Reproductive technology experience many stressors and may be at an increased risk of depression. The PHQ-8 is a brief measure designed to detect the presence of severity of depressive symptoms. It has been validated in many populations; however, it has not been validated for use in this population. Study design, size, duration This is a cross-sectional study of 171 first time mothers in the United States, recruited through Amazon’s Mechanical Turk (MTurk). Participants/materials, setting, methods The reliability of the PHQ-8 was measured through a Cronbach’s alpha, the convergent validity was measured though the correlation between the PHQ-8 and the General Anxiety Disorder-7 (GAD-7) measure of anxiety symptoms, and the structural validity was measured through a Confirmatory Factor Analysis. Main results and the role of chance The Cronbach’s alpha for the total PHQ-8 was acceptable (α =.922). The correlation between the PHQ-8 and the GAD-7 was large (r=.88) indicating good convergent validity. Ultimately, a bifactor model provided the best model fit (χ2(13) = 23.8, p = 0.033; Comparative Fit Index (CFI) =0.987; Root Mean Square Error of Approximation (RMSEA) = 0.07, Tucker-Lewis Index (TLI) = 0.972). Limitations, reasons for caution The results are limited by: the predominantly white and well-educated sample, a lack of causation between the use of artificial reproductive technology and depressive symptoms, including mothers with children up to 5 years old, convergent validity being based on associations with a related construct instead of the same construct, lack of test-retest reliability, divergent validity, and criterion-related validity, data collected through MTurk, and the fact that the measures used were all self-report and therefore may be prone to bias. Wider implications of the findings Consistent with previous literature, a bifactor model for the PHQ-8 was supported. As such, when assessing depression in first-time mothers who conceived via Assisted Reproductive Technology, using both the PHQ-8 total score and subdomain scores may yield the most valuable information. The results from this study provide preliminary support for the reliability and validity of the PHQ-8 as a measure of depression in first-time mothers who conceived using Assisted Reproductive Technology. Study funding/competing interest(s) No specific funding was used for the completion of this study. Throughout the study period and manuscript preparation, the authors were supported by the department funds at Baylor University. The authors declare that they have no conflicts of interest. Trial registration number N/A

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Validity and reliability of the Patient Health Questionnaire-8 in Swedish for individuals with systemic sclerosis

Cited by 10 publications

References 42 publications

Validity and reliability of the Swedish version of the Self-Efficacy for Managing Chronic Disease scale for individuals with systemic sclerosis

Validity and reliability of the Swedish version of the Self-Efficacy for Managing Chronic Disease scale for individuals with systemic sclerosis

Longitudinal measurement invariance of the patient health questionnaire in a German sample

Reliability and validity of the PHQ-8 in first-time mothers who used assisted reproductive technology

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