Table 1

Centred log hazard ratios for simulated survival data

CentreCentred log HRWithout allowance for overdispersionWith allowance for overdispersion
LCL (95%)UCL (95%)LCL (99%)UCL (99%)LCL (95%)UCL (95%)LCL (99%)UCL (99%)
1−0.739−0.8030.803−1.0551.055−1.5831.583−2.0812.081
2−0.0049−0.6240.624−0.8200.820−1.2311.231−1.6181.618
30.904−0.7240.724−0.9510.951−1.4271.427−1.8761.876
4−0.808−0.5320.532−0.6990.699−1.0491.049−1.3791.379
5−0.490−0.5630.563−0.7400.740−1.1111.111−1.4601.460
6−0.140−0.5620.562−0.7390.739−1.1081.108−1.4571.457
70.261−0.6630.663−0.8710.871−1.3071.307−1.7171.717
8−0.074−0.5640.564−0.7420.742−1.1131.113−1.4631.463
91.087−0.7820.782−1.0271.027−1.5421.542−2.0262.026
100.0053−0.5630.563−0.7400.740−1.1111.111−1.4601.460
Unadjusted for case mixAdjusted for case mix
χ2 (9 df)37.1 p<0.000135.0 p<0.0001
φ = 3.89
  • LCL, lower control limit; UCL, upper control limit.