Fig. 1.

Nomogram of risk factors in the progression from endometriosis to ovarian cancer.

OC-free prob, ovarian cancer-free probability; NTD, New Taiwan Dollar.

The scales of the risk factors are as follows: ^*Age: continuous; ^†Hospital stratification: 1, medical center; 2, regional hospitals; 3, district hospitals; 4, local hospitals; ^‡Premium range in NTD: 1, >15,840 and ≤25,000; 2, ≤15,840; 3, >25,000; ^§Depression: 0, none; 1, history of depression; ^∥Pelvic inflammation: 0, none, 1, history of pelvic inflammation; ^¶Childbearing: 0, none after endometriosis; 1, history of birth-giving after endometriosis.