Validity of the Workers Productivity and Activity Impairment Questionnaire: Specific Health Problem (WPAI:SHP) in patients with systemic sclerosis.
Clin Exp Rheumatol
; 35 Suppl 106(4): 130-137, 2017.
Article
en En
| MEDLINE
| ID: mdl-28516877
ABSTRACT
OBJECTIVES:
To evaluate the construct validity of the Workers Productivity and Impairment Activity Index Specific Health Problem (WPAISHP) in Australian systemic sclerosis (SSc) patients.METHODS:
SSc patients, identified through the Australian Scleroderma Cohort Study database, completed the WPAISHP and a quality of life instrument (PROMIS-29) cross-sectionally. The construct validity of the WPAISHP was assessed by the correlations between the WPAISHP and a range of SSc health states. Non-parametric correlation, including Spearman's correlation (ρ), was used to test the validity of WPAISHP and ability to distinguish between different health states.RESULTS:
A total of 476 completed questionnaires was returned, equating to a response rate of 63.7%. Among those under 65 years of age, 155 patients (55.2%) were in paid employment. Employed patients had a mean (± SD) age of 56.5 (9.8) years and were predominantly female (87.3%) with limited disease subtype (75.6%). The WPAISHP showed construct validity based on moderate to strong correlations with health status as assessed by a range of health outcome measures including disease activity (ρ=0.34-0.39, p=0.001), physical function (ρ=0.55-0.62, p=0.001), disease severity(ρ=0.55-0.62, p=0.001), fatigue (ρ= 0.62-0.63, p=0.001), pain (ρ=0.68-0.71, p=0.001), and breathlessness (ρ=0.39-0.46, p=0.001). Furthermore, according to the effect size, the WPAISHP scores have a large discriminative ability (d=1.26-1.47) for distinguishing SSc patients with different health outcomes.CONCLUSIONS:
The WPAI is a valid questionnaire for assessing impairments in paid employment and social activities in SSc patients, and for measuring the relative differences between SSc patients with varying health states.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Esclerodermia Sistémica
/
Estado de Salud
/
Encuestas y Cuestionarios
/
Eficiencia
/
Empleo
Tipo de estudio:
Observational_studies
/
Prevalence_studies
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Prognostic_studies
/
Risk_factors_studies
Límite:
Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Clin Exp Rheumatol
Año:
2017
Tipo del documento:
Article
País de afiliación:
Australia