Table 3.

Risk Estimates (OR, 95% CI) for NHL Associated With HCV by Study

	Prevalence
	Control	Case	Control		Case
	n	n	n	%	n	%	OR (95% CI)a
Connecticut	534	463	5	0.94	8	1.73	2.80 (0.65–6.64)
Italy	504	225	45	8.93	44	19.56	2.67 (1.66–4.29)
NCI	684	813	14	2.05	32	3.94	1.89 (0.99–3.61)
NSW	518	587	2	0.39	3	0.51	1.15 (0.19–7.00)
UCSF	1544	554	57	3.69	23	4.15	1.24 (0.75–2.05)
EpiLymph	1788	1346	41	2.29	43	3.19	1.44 (0.93–2.24)
British Columbia	697	796	5	0.72	19	2.39	3.28 (1.20–8.98)
Pooled data	6269	4784	169	2.7	172	3.59	1.78 (1.40–2.25)b

NOTE. Test of heterogeneity between studies; P = .28, χ² = 7.44; df = 6.

^aOR and 95% CI were estimated using unconditional logistic regression models adjusted for age, sex, race, and study center.

^bTwo-stage logistic regression model.