Table 4.

Odds ratios (95% CI) of ovarian cancer by pre-defined categories of CRP

CRP (mg/l)	≤1	2–10	>10	p-trend*
All cases
Cases/controls	83/155	138/263	16/9
OR (95% CI)	1.00	1.10 (0.77–1.59)	4.39 (1.76–10.90)	0.04
Invasive cases
Cases/controls	72/131	121/233	14/9
OR (95% CI)	1.00	1.03 (0.70–1.52)	3.71 (1.46–9.44)	0.12
All cases but mucinous
Cases/controls	73/135	121/231	14/8
OR (95% CI)	1.00	1.08 (0.74–1.59)	4.21 (1.60–11.07)	0.07
Premenopausal cases
Cases/controls	43/70	41/83	4/4
OR (95% CI)	1.00	0.91 (0.50–1.63)	1.88 (0.43–8.36)	0.88
Postmenopausal cases
Cases/controls	37/79	94/176	12/5
OR (95% CI)	1.00	1.25 (0.77–2.05)	7.48 (2.20–25.42)	0.01
Lag >two years
Cases/controls	73/135	118/219	11/8
OR (95% CI)	1.00	1.10 (0.75–1.63)	3.04 (1.16–7.99)	0.13
Lag >five years
Cases/controls	55/103	82/155	7/4
OR (95% CI)	1.00	1.10 (0.71–1.72)	3.60 (0.99–13.16)	0.23

All models from conditional logistic regression with adjustment for BMI

^*p-value for linear trend over the tertiles, giving quantitative scores to all levels (1, 2, and 3)