Validation of screening questionnaires for evaluation of knee osteoarthritis prevalence in the general population of Singapore.
Int J Rheum Dis
; 21(3): 629-638, 2018 Mar.
Article
en En
| MEDLINE
| ID: mdl-29271108
ABSTRACT
BACKGROUND:
The prevalence of symptomatic knee osteoarthritis (KOA) in Singapore is unknown. We aimed to (i) validate questionnaires to screen for symptomatic KOA; and (ii) estimate the prevalence of symptomatic KOA in Singapore using the validated algorithms.METHODS:
Subjects aged ≥50 years were evaluated for symptomatic KOA based on American College of Rheumatology clinical and radiographic criteria in a rheumatology clinic, and completed three sets of adapted screening questionnaires. The better performing screening questionnaire with adequate sensitivity and specificity was adminitered to a nationally representative sample of survey subjects (n = 3364) to estimate the weighted prevalence of symptomatic KOA in Singapore.RESULTS:
Out of 146 subjects evaluated in the clinic, 45 had symptomatic KOA. A screening algorithm which consisted of three KOA symptoms or one symptom plus physician-diagnosed KOA produced high specificity (0.95, 95% confidence intervals [CI] 0.88-0.98) but low sensivity (0.44, 95% CI 0.30-0.60). Replacing the term 'KOA' with 'physician-diagnosed ageing-related knee problem' improved the sensivity (0.62, 95% CI 0.47-0.76) without significantly compromising the specificity (0.87, 95% CI 0.79-0.93). The prevalence of symptomatic KOA weighted to the Singapore population distribution were 4.7% and 11%, using the most conservative and more liberal algorithms, respectively. There was a sharp rise in prevalence after age of 40. The weighted prevalence of KOA was higher in women and among Indian and Malay than Chinese.CONCLUSION:
Our study adapted and validated questionnaires to the local context to screen for symptomatic KOA. We estimated the prevalence of symptomatic KOA in Singapore utilizing the better-performing algorithms.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Encuestas y Cuestionarios
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Osteoartritis de la Rodilla
Tipo de estudio:
Diagnostic_studies
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Prevalence_studies
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Prognostic_studies
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Risk_factors_studies
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Screening_studies
Límite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
País/Región como asunto:
Asia
Idioma:
En
Año:
2018
Tipo del documento:
Article