Epidemiologic Perspectives & Innovations

Table 5 Case-control study of oral contraceptives and myocardial infarction [25]

From: Causal analysis of case-control data

CIG		AGE						Total
		25–34		35–44		45+
	OC	Case	Control	Case	Control	Case	Control	Case	Control
none	1	0	38	1	12	3	2	4	52
	0	1	281	13	318	20	155	34	754
		= 2.44		= 2.03		= 11.63		= 1.71
1–24	1	2	35	1	15	0	1	3	51
	0	5	221	32	249	42	96	79	566
		= 2.53		= 0.52		= 0.76		= 0.42
25+	1	11	22	8	8	3	2	22	32
	0	8	112	53	125	31	50	92	287
		= 7.00		= 2.36		= 2.42		= 2.14
Total	1	13	95	10	35	6	5	29	135
	0	14	614	98	692	93	301	205	1607
		= 6.00		= 2.02		= 3.88		= 1.68

OC: oral contraceptives
CIG: cigarettes
AGE: age

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