Table 3

Standardised mortality ratio (SMR) with 95% confidence intervals, comparing the observed and expected number of deaths 1976–95 for migrant twins of the Finnish Twin Cohort Study. Expected numbers obtained from mortality rates of the Finnish Twin Cohort Study. By sex, years in Sweden of migrant and underlying cause of death

	≤20 years in Sweden				>20 years in Sweden				All
Cause of death	Observed	Expected	SMR	95% CI	Observed	Expected	SMR	95% CI	Observed	Expected	SMR	95% CI
Men
All causes	39	24.02	1.62	1.11 to 2.13	37	44.82	0.83	0.56 to 1.09	76	68.84	1.10	0.86 to 1.35
All non-violent causes	27	14.47	1.87	1.16 to 2.57	24	35.82	0.67	0.40 to 0.94	51	50.29	1.01	0.74 to 1.29
Cancer	6	3.85	1.56	0.57 to 3.39	0	10.18	–	0.00 to 0.36	6	14.03	0.43	0.16 to 0.93
Cardiovascular	14	6.96	2.01	1.10 to 3.37	17	18.98	0.90	0.52 to 1.43	31	25.95	1.19	0.77 to 1.62
Coronary heart disease	11	4.63	2.38	1.19 to 4.25	8	13.96	0.57	0.25 to 1.13	19	18.59	1.02	0.62 to 1.60
Violent causes	12	9.55	1.26	0.65 to 2.19	13	9.00	1.44	0.77 to 2.47	25	18.55	1.35	0.82 to 1.88

Women
All causes	16	9.70	1.65	0.94 to 2.68	34	25.38	1.34	0.89 to 1.79	50	35.08	1.43	1.03 to 1.82
All non-violent causes	11	7.90	1.39	0.70 to 2.49	29	23.18	1.25	0.80 to 1.71	40	31.07	1.29	0.89 to 1.69
Cancer	4	3.40	1.18	0.32 to 3.02	8	8.32	0.96	0.42 to 1.89	12	11.72	1.02	0.53 to 1.79
Cardiovascular	5	2.08	2.41	0.78 to 5.62	12	7.85	1.53	0.79 to 2.67	17	9.93	1.71	1.00 to 2.74
Coronary heart disease	2	1.32	1.52	0.18 to 5.48	6	5.19	1.16	0.42 to 2.51	8	6.51	1.23	0.53 to 2.42
Violent causes	5	1.80	2.77	0.90 to 6.47	5	2.20	2.27	0.74 to 5.29	10	4.01	2.50	1.20 to 4.59