From: Should adjustment for covariates be used in prevalence estimations?
Possible samples | ||||||
---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | |||
Prop. Male |
| 0.6 | 0.6 | 0.4 | 0.4 | |
Gender-specific prevalence estimator | Male |
| 0.2 | 0.3 | 0.15 | 0.3 |
Female |
| 0.25 | 0.1 | 0.2 | 0.1 | |
Difference |
| -0.05 | 0.2 | -0.05 | 0.2 | |
Prevalence estimator | Crude |
| 0.2200 | 0.2200 | 0.1800 | 0.1800 |
Adjusted (using π D ) |
| 0.2100 | 0.2100 | 0.1900 | 0.1900 | |
Direct adjusted (using ) |
| 0.2250 | 0.2000 | 0.1750 | 0.2000 | |
Covariance adjusted |
| 0.2248 | 0.2008 | 0.1752 | 0.1994 |