. Author manuscript; available in PMC: 2013 Apr 21.

Published in final edited form as: Female Pelvic Med Reconstr Surg. 2012 Sep-Oct;18(5):274–280. doi: 10.1097/SPV.0b013e318263a210

Table 5.

Prediction model for preoperative risk stratification of major postoperative complications after benign gynecologic surgery (N = 19,439)

	Low risk (0 to 1 points)	Medium risk (2 to 3 points)	High risk (≥ 4 points)
Derivation cohort (2005 to 2008)
Major complications absent (n = 9,253)	7,909 (97.3)	1,313 (93.7)	31 (70.5)
Major complications present (n =319)	217 (2.7)	89 (6.3)	13 (29.5)
Validation cohort (2009)
Major complications absent (n = 9,550)	8,150 (97.6)	1,352 (93.2)	48 (76.2)
Major complications present (n = 317)	204 (2.4)	98 (6.8)	15 (23.8)

All values listed as n(%)