TABLE 3.

Ovarian cancer survival by tumor characteristics

Prognostic Characteristic*	% Deceased (Nonusers)	% Deceased (Users)	Crude HR (95% CI) Users vs Nonusers	aHR (95% CI) Users vs Nonusers
Histologic subtype†
Serous	94.0	78.3	0.64 (0.48–0.86)	0.85 (0.62–1.17)
Mucinous	100.0	25.0	0.16 (0.06–0.45)	0.16 (0.02–1.24)
Endometrioid	69.8	30.0	0.28 (0.08–0.91)	0.67 (0.18–2.52)
Clear cell	85.7	33.3	0.29 (0.07–1.26)	0.12 (0.01–1.12)
FIGO stage‡
I	73.5	24.2	0.22 (0.10–0.49)	0.29 (0.11–0.80)
II	84.6	50.0	0.38 (0.14–1.01)	0.63 (0.21–1.86)
III	93.2	80.7	0.72 (0.51–1.01)	1.09 (0.74–1.60)
IV	100.0	89.5	0.48 (0.27–0.86)	0.51 (0.26–0.98)
Tumor grade§
1, well differentiated	73.8	34.8	0.35 (0.16–0.75)	0.97 (0.28–3.39)
2, moderately differentiated	94.1	66.7	0.61 (0.36–1.03)	1.08 (0.60–1.97)
3, poorly differentiated	91.8	75.0	0.57 (0.41–0.80)	0.65 (0.44–0.96)

^*HRs and CIs computed using Cox regression.

^†Adjusted for age at diagnosis and FIGO stage.

^‡Adjusted for age at diagnosis and histology.

^§Adjusted for age at diagnosis, FIGO stage, and histology.