Table 6
Resampling validation of logistic models (bootstrap n=200)
Original sample
Optimism
Corrected index
Females
Concordance c-statistic
0.735
0.020
0.715
Slope
1.000
0.113
0.887
Males
Concordance c-statistic
0.689
0.022
0.667
Slope
1.000
0.129
0.871