Table 4 Hazard ratio and 95% Bootstrap confidence interval (BCI) for the six simulated trials in Table 3
From: IPDfromKM: reconstruct individual patient data from published Kaplan-Meier survival curves
Results based | Results based on reconstructed IPD | |||||
|---|---|---|---|---|---|---|
Curve | on true IPD | IPDfromKM | DigitizeIt | ScanIt | ||
1 | 0.469 [0.369, 0.594] | 0.487 [0.379, 0.627] | 0.470 [0.366, 0.597] | 0.474 [0.368, 0.593] | ||
2 | 0.408 [0.288, 0.554] | 0.410 [0.281, 0.570] | 0.403 [0.278, 0.566] | 0.407 [0.277, 0.546] | ||
3 | 0.699 [0.557, 0.876] | 0.706 [0.560, 0.873] | 0.713 [0.561, 0.882] | 0.707 [0.563, 0.871] | ||
4 | 1.081 [0.768, 1.481] | 1.072 [0.764, 1.491] | 1.076 [0.758, 1.474] | 1.064 [0.768, 1.470] | ||
5 | 0.767 [0.602, 0.971] | 0.780 [0.596, 0.996] | 0.778 [0.589, 0.991] | 0.773 [0.592, 0.990] | ||
6 | 0.486 [0.345, 0.653] | 0.485 [0.343, 0.665] | 0.486 [0.349, 0.657] | 0.483 [0.340, 0.653] | ||