Table 2 Age-standardized prevalence, RII*and SII** of current smoking and diabetes among women and men aged 40–59 years between 1984 and 2008 in The Nord-Trøndelag Health Study (HUNT), by level of education

Women

Educational level

Primary

37.6

48.6

46.2

Secondary

30.1

37.9

33.9

Tertiary

17.5

19.6

22.3

RII (95% CI)

2.00 (1.77-2.24)

2.57 (2.35-2.80)

2.55 (2.28-2.81)

0.001

SII (95% CI)

22.54 (18.92-26.17)

36.13 (32.96-39.31)

30.09 (26.74-33.45)

<0.001

Men

Educational level

Primary

40.4

42.9

35.7

Secondary

35.4

34.2

26.6

Tertiary

25.7

20.1

17.4

RII (95% CI)

1.57 (1.41-1.73)

2.31 (2.07-2.54)

2.48 (2.11-2.85)

0.000

SII (95% CI)

17.05 (13.26-20.84)

28.65 (25.30-32.00)

23.24 (19.59-26.89)

0.048

Women

Educational level

Primary

1.2

1.3

2.2

Secondary

1.4

1.5

2.5

Tertiary

0.9

1.2

1.8

RII (95% CI)

1.03 (0.32-1.74)

1.11 (0.47-1.75)

1.36 (0.70-2.00)

0.585

SII (95% CI)

−0.35 (−1.24-0.54)

0.01 (−0.89-0.90)

0.46 (−0.62-1.54)

0.053

Men

Educational level

Primary

1.4

2.4

4.1

Secondary

1.5

2.1

3.3

Tertiary

0.6

1.7

2.6

RII (95% CI)

1.35 (0.48 -2.21)

1.38 (0.70-2.06)

2.00 (1.09-2.92)

0.201

SII (95% CI)

0.31 (−0.63-1.26)

0.50 (−0.40-1.38)

1.33 (0.01-2.66)

0.010