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Methodological issues in a disablement prevalence study: Mitchells Plain, South Africa

J Katzenellenbogen¹, G Joubert, K Rendall

¹Centre for Epidemiological Research in Southern Africa, SA Medical Research Council, South Africa.

Disability and Rehabilitation

|October 1, 1995

Summary

The Mitchells Plain Disability Survey identified disabled individuals in South Africa using a two-stage screening process. Methodological challenges in disability surveys highlight the need for standardized, cost-effective research methods.

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Area of Science:

Public Health
Epidemiology
Disability Studies

Background:

The Mitchells Plain Disability Survey aimed to enhance a community-based rehabilitation program in an underprivileged South African urban area.
Previous research in disability often faced challenges with standardization and cost-effectiveness.

Purpose of the Study:

To conduct a descriptive survey identifying disabled individuals and their needs in Mitchells Plain.
To discuss methodological issues in disability survey design and advocate for standardization.

Main Methods:

Employed a proportional stratified random cluster sampling strategy (n=2424).
Utilized a two-stage approach: household screening questionnaire followed by a confirmation interview.
Collected data on medical, disablement, and demographic profiles, and ascertained needs.

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Main Results:

Identified health problems affecting functional ability and confirmed disablement status.
Highlighted sampling issues like sample loss and non-independence of observations.
Discussed the trade-off between study scope and confidence intervals for prevalence rates.

Conclusions:

Emphasized the need for standardized methods in disability research.
Stressed the importance of cost-effective, rapid survey designs for local-level data.
Acknowledged that criteria for identifying disability influence prevalence outcomes.