Table 3.

Observed and expected numbers of cardiovascular disease (CVD) deaths and standardised mortality ratios (SMR) in the whole cohort and the substrata during the follow-up period 1990–2001.

covariable	category	observed CVD deaths	expected CVD deaths	SMR	95%-CI*
whole cohort		680	865.59	0.79	0.73–0.85
Sex	male	296	389.09	0.76	0.68–0.85
	female	384	476.50	0.81	0.73–0.89
Age group	15–39	28	23.56	1.19	0.79–1.72
	40–64	165	199.91	0.83	0.71–0.96
	65+	487	642.12	0.76	0.69–0.83
duration of stay	<5 years	379	478.09	0.79	0.72–0.88
	5–8 years	250	333.67	0.75	0.66–0.85
	>8 years	51	53.82	0.95	0.72–1.25
study period	1990–1993	49	91.33	0.54	0.40–0.71
	1994–1997	228	281.17	0.81	0.71–0.92
	1998–2002	403	493.09	0.82	0.74–0.90
year of arrival	1990–1993	419	559.79	0.75	0.68–0.82
	1994–1997	215	247.67	0.87	0.76–0.99
	1998–2001	46	58.14	0.79	0.58–1.05
family size at arrival	single	125	154.97	0.81	0.68–0.96
	2 to 4	485	595.28	0.81	0.75–0.89
	5+	70	115.34	0.61	0.48–0.77
size of first city of residence	>100,000	403	537.33	0.75	0.68–0.83
	<100,000	277	327.58	0.85	0.75–0.95

*95% confidence intervals (CI) were calculated with approximate methods when the number of observed cases in a stratum was larger or equal than 50, and with exact methods if it was below.