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. 2013 May 9;8(5):e62650. doi: 10.1371/journal.pone.0062650

Table 4. Performance of equations for the first and second events in training and test subsamples.

Training sample Test sample
C statistics (95% CI) HL X2 a (P-value) C statistics (95% CI) HL X2 (P-value)
AMI First event 0.78 (0.76–0.79) 7.30 (0.51) 0.79 (0.77–0.82) 16.33 (0.04)
Second event 0.76 (0.74–0.79) 8.77 (0.36) 0.79 (0.74–0.84) 12.04 (0.15)
HF First event 0.84 (0.82–0.85) 9.58 (0.30) 0.84 (0.82–0.86) 12.31 (0.14)
Second event 0.84 (0.83–0.85) 6.11 (0.64) 0.84 (0.82–0.85) 22.67 (<0.01)
Stroke First event 0.80 (0.78–0.82) 11.22 (0.19) 0.79 (0.76–0.82) 11.61 (0.17)
Second event 0.74 (0.71–0.77) 8.09 (0.43) 0.70 (0.64–0.75) 9.99 (0.27)
NAIHD First event 0.76 (0.74–0.78) 6.02 (0.65) 0.75 (0.72–0.78) 5.86 (0.66)
Second event 0.78 (0.77–0.80) 3.76 (0.88) 0.77 (0.74–0.80) 14.07 (0.08)

Abbreviations: NAIHD, non-acute ischaemic heart disease; HF, heart failure; AMI, acute myocardial infarction.

a

. Hosmer-Lemeshow X2 statistics.