Table 3. ORs and 95% CIs of ovarian cancer and borderline tumours according to CA125 by age groups.

	Ovarian cancer		Borderline tumour
	OR	95% CI	OR	95% CI
All
CA125 positive
Case less than 40 years old	1.1	0.3–3.5	0.8	0.2–3.0
Case 40–49 years old	3.5	2.3–5.4	2.8	1.6–4.8
Case 50+ years old	3.3	1.5–7.1	12	1.3–110
CA125 measurements less than five years prior to diagnosis
CA125 positive
Case less than 40 years old	—	—	4.4	0.4–51
Case 40–49 years old	4.3	2.1–8.8	6.6	2.7–16
Case 50+ years old	5.2	1.9–14	3.0	0.2–48

OR=odds ratio; CI=confidence interval.