What is the best way to calculate prevalence/ Pool prevalence from a study with heterogeneous population/Sample? For instance, in a survey conducted across Asia (continent), how can I check the prevalence of a disease in only one of the participating countries (eg: Philippines)?
Gideon Dzando
One way to pool prevalence from a heterogeneous study is by conducting a pooled analysis. In a pooled analysis, the modeling of the exposure, confounding, and outcome variables, the choice of which variables to control for, and the type of analysis conducted can be standardized, thereby removing potential sources of heterogeneity across studies.
To calculate prevalence in a heterogeneous population, you can use the formula:
Prevalence = (Newly developed disease + Existing disease) / Total individuals in sample
To check the prevalence of a disease in only one of the participating countries (eg: Philippines), you can use the following steps:
I hope this helps!
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