Table 2.

Summary of results for 39 risk distributions

	Median	25th–75th percentile	Mean	Range
Overall event rate	0.15	0.09–0.29	0.20	0.03–0.63
Model risk predictors	10	7–16	10.9	4–20
Events per variable	51.3	32.3–84.7	107.0	12.5–907.1
c-statistic	0.69	0.65–0.71	0.70	0.59–0.89
EQRR observed	4.3	3.0–6.1	6.1	1.8–50.7
EQRR predicted	4.0	3.1–5.4	5.3	1.9–35.2
MMRR	0.86	0.80–0.92	0.84	0.42–1.04
PMSC	0.74	0.60–0.86	0.70	−0.24–1.56

EQRR, extreme quartile risk ratio; MMRR, median-to-mean risk ratio; PMSC, Pearson’s median skewness coefficient.