Table 5

Rate ratios (RR) and 95% confidence intervals (CI) for CVD standardised mortality ratios as derived from Poisson regression models which employ the natural logarithm of expected cases as offset term.

univariate^†

multivariate-adjusted^‡

covariable

category

RR

95%-CI

RR

95%-CI

Sex

male*

1

1

female

1.06

0.91–1.24

1.10

0.94–1.29

Age group

15–39*

1

1

40–64

0.69

0.47–1.06

0.70

0.47–1.06

65+

0.64

0.44–0.96

0.61

0.43–0.92

duration of stay

<5 years*

1

1

5–8 years

0.94

0.80–1.11

0.86

0.68–1.08

>8 years

1.20

0.88–1.58

1.10

0.76–1.59

study period

1990–1993*

1

1

1994–1997

1.51

1.12–2.08

1.53

1.12–2.13

1998–2002

1.52

1.14–2.07

1.65

1.14–2.41

year of arrival

1990–1993*

1

1

1994–1997

1.16

0.98–1.36

1.06

0.87–1.29

1998–2001

1.06

0.77–1.42

0.89

0.60–1.29

family size

single*

1

1

2 to 4

1.01

0.83–1.23

1.00

0.82–1.22

5+

0.75

0.56–1.00

0.74

0.55–0.99

size of city

>100,000*

1

1

<100,000

1.13

0.97–1.31

1.12

0.96–1.30

*reference category

^†the Poisson models only contain the respective covariable

^‡the Poisson model contains all covariables; intercept (baseline log SMR): -0.25 (p = 0.31)

Ronellenfitsch et al. BMC Public Health 2006 6:16   doi:10.1186/1471-2458-6-16