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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Fertil Steril. 2015 Aug 10;104(5):1218–1226. doi: 10.1016/j.fertnstert.2015.07.1135

Table 3.

Hazard Ratios (HR) and 95% Confidence Intervals (CI) for Risk of Cancer after ART among Women without Prior ART Treatment by Age at Cycle Start*

All Cancers Endocrine Melanoma Breast Ovary Uterus All Female Genital
N (number of cancers) (460) (71) (42) (185) (21) (26) (67)
HR 95% CI P Value* HR 95% CI P Value HR 95% CI P Value HR 95% CI P Value HR 95% CI P Value HR 95% CI P Value HR 95% CI P Value
Age at 18-29 1.00 Reference <0.0001 1.00 Reference 0.59 1.00 Reference 0.75 1.00 Reference <0.0001 1.00 Reference 0.31 1.00 Reference 0.01 1.00 Reference 0.01
Cycle Start 30-34 1.27 0.85, 1.92 0.96 0.43, 2.16 0.88 0.32, 2.42 2.95 1.02, 8.65 1.88 0.21, 17.57 2.74 0.33, 23.74 1.52 0.49, 4.76
35-37 1.92 1.28, 2.90 1.16 0.51, 2.70 0.71 0.23, 2.25 5.59 1.98, 16.15 4.05 0.49, 35.18 0.66 0.04, 11.10 2.06 0.66, 6.54
38-40 2.86 1.92, 4.27 1.36 0.59, 3.16 1.28 0.45, 3.68 10.43 3.76, 29.51 1.64 0.15, 19.08 3.06 0.34, 28.72 2.25 0.72, 7.26
41-43 2.87 1.89, 4.39 0.81 0.29, 2.32 1.49 0.50, 4.57 11.61 4.13, 33.31 3.54 0.37, 35.88 10.01 1.26, 82.78 4.55 1.51, 14.09
44-64 4.88 3.17, 7.59 1.90 0.70, 5.24 1.36 0.34, 5.65 23.20 8.23, 66.86 7.68 0.79, 78.24 9.30 1.03, 87.78 5.24 1.57, 17.95
*

Models adjusted for State, and year of ART treatment