Site | Study period | ||
Relative risk (95% CI)* | |||
Baseline | Interviews | Intervention | |
Control site | 1 (reference) | 1.952 (0.853 to 4.465) | 3.239 (1.431 to 7.331) |
Intervention site | 6.304 (3.128 to 12.704) | 7.777 (3.880 to 15.590) | 12.712 (6.411 to 25.206) |
*Relative risks are derived from the interaction between study site and study period (log-binomial regression model); adjusted for patient age.