Table 3

Discrimination and calibration of UKPDS and Framingham CHD Risk Equations
N (Number of CHD events) Discrimination Harrell’s c-index (95%CI) Calibration GOF Chi-Square Statistics
Unadjusteda Adjusteda
UKPDS Incident 5914 (120) 0.63 (0.58, 0.68) 55.64 2.18
Duration 5914 (120) 0.64 (0.59, 0.69) 446.73 7.65
Framingham-Initial Men 2560 (97) 0.61 (0.55, 0.67) 24.28 0.88
Women 3354 (121) 0.59 (0.54, 0.64) 17.27 5.85
Framingham-Secondary Men 1317 (209) 0.55 (0.51, 0.59) 19.45 8.52
Women 1072 (165) 0.54 (0.49, 0.58) 77.59 5.23

aUnadjusted and adjusted refer to the GOF chi-square statistics before vs. after recalibration, respectively.

Lu et al.

Lu et al. BMC Endocrine Disorders 2012 12:12   doi:10.1186/1472-6823-12-12

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