C statistics with 95% CIs and calibration χ2 statistics for Diabetes Population Risk Tool (DpoRT) and cohorts' own functions
| Men | Women | |||||
| NPHS ON | CCHS ON | NPHS MB | NPHS ON | CCHS ON | NPHS MB | |
| C statistic (95% CI) | ||||||
| DPoRT | 0.77 (0.76 to 0.79) | 0.77 (0.76 to 0.79) | 0.79 (0.77 to 0.82) | 0.78 (0.76 to 0.79) | 0.76 (0.74 to 0.77) | 0.80 (0.77 to 0.82) |
| Own function* | 0.80 (0.78 to 0.83) | 0.78 (0.76 to 0.79) | 0.80 (0.77 to 0.82) | 0.80 (0.78 to 0.83) | 0.77 (0.75 to 0.79) | 0.80 (0.77 to 0.82) |
| Calibration χ2 | ||||||
| Uncalibrated DPoRT | 4.33 | 13.23 | 136.13 | 5.22 | 24.84 | 35.07 |
| Mean calibrated DPoRT‡ | – | 13.04 | 18.35 | – | 18.27 | 17.61 |
| Own function | – | 8.89 | 8.32 | – | 10.44 | 4.88 |
↵* Own function is the factors of the algorithm applied using coefficients derived from the validation cohort's own data.
↵‡ Calibrated DPoRT is function adjusted using the validation cohort's own means for factors.
CCHS, Canadian Community Health Survey; MB, Manitoba; NPHS, National Population Health Survey; ON, Ontario.