|  |  | Results of simulations | |||||
---|---|---|---|---|---|---|---|---|
Scenarios | Methods (Effect measures) | Settings | Mean of estimates (Ratio scale) | Bias (Log scale) | Empirical standard error | Mean squared error | Mean standard error | Coverage (%) |
5 | SCCS (IRR) | P C a = 0.3 | 3.02 | 0.0055 | 0.1019 | 0.0104 | 0.0983 | 93.9 |
 | CCO (OR) |  | 3.02 | 0.0053 | 0.2065 | 0.0426 | 0.1974 | 94.2 |
 | SSA (ASR) |  | 4.39 | 0.3799 | 0.2764 | 0.2206 | 0.2628 | 72.8 |
 | SCCS (IRR) | P C a = 0.6 | 3.06 | 0.0202 | 0.1046 | 0.0113 | 0.1001 | 93.1 |
 | CCO (OR) |  | 3.02 | 0.0053 | 0.2065 | 0.0426 | 0.1974 | 94.2 |
 | SSA (ASR) |  | 7.87 | 0.9647 | 0.3638 | 1.0630 | 0.3397 | 0.1 |
 | SCCS (IRR) | P C a = 1.0 | 3.13 | 0.0421 | 0.1088 | 0.0136 | 0.1027 | 90.3 |
 | CCO (OR) |  | 3.02 | 0.0053 | 0.2065 | 0.0426 | 0.1974 | 94.2 |
 | SSA (ASR) |  | NA | NA | NA | NA | NA | NA |
6 | SCCS (IRR) | Restricted to patients who did not experience the event before the first exposure | 5.03 | 0.5164 | 0.1040 | 0.2775 | 0.1002 | 0.0 |
 | CCO (OR) | 3.02 | 0.0053 | 0.2065 | 0.0426 | 0.1974 | 94.2 | |
 | SSA (ASR) | NA | NA | NA | NA | NA | NA |