Health administrative data enrichment using cohort information: Comparative evaluation of methods by simulation and application to real data - Fig 6

Simulation results when the inclusion probability in the external validation sample (notated P) depends on U1; coverage rate of 95% confidence interval (grey dot with black margin) and mean estimated log-odds ratio for the exposure effect (black dot) ± empirical standard error: (A) logit(P) = -2.2+log(2)U1, (B) logit(P) = -2.7+log(4)U1, (C) logit(P) = -2.3+log(2)U1+log(2)X*U1, (D) logit(P) = -2.5+log(2)U1+log(2)Y*U1. The grey dotted line corresponds to the nominal value of the coverage rate of the 95% confidence interval. The black dotted line is the true value of β (0).