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Table 3 Age-standardized prevalence, RII*and SII** of hypertension and high total cholesterol among women and men aged 40–59 years between 1984 and 2008 in The Nord-Trøndelag Health Study (HUNT), by level of education

From: Trends in absolute and relative educational inequalities in four modifiable ischaemic heart disease risk factors: repeated cross-sectional surveys from the Nord-Trøndelag Health Study (HUNT) 1984–2008

 

HUNT I (1984–86)

HUNT II (1995–97)

HUNT III (2006–08)

P for trend

Hypertension

Women

    

Educational level

    

Primary

46.4

42.1

31.3

 

Secondary

39.9

36.0

29.2

 

Tertiary

31.1

26.9

20.4

 

RII (95% CI)

1.47 (1.34-1.61)

1.56 (1.42-1.70)

1.63 (1.45-1.81)

0.001

SII (95% CI)

17.71 (13.97-21.45)

18.37 (15.22-21.51)

14.14 (11.08-17.20)

0.046

Men

    

Educational level

    

Primary

56.6

51.7

40.5

 

Secondary

54.4

47.9

36.7

 

Tertiary

46.8

42.8

32.8

 

RII (95% CI)

1.16 (1.08-1.24)

1.21 (1.12-1.30)

1.28 (1.14-1.41)

0.011

SII (95% CI)

9.07 (5.20 -12.92)

10.54 (6.92-14.15)

9.99 (5.90-14.08)

0.327

High total cholesterol

Women

    

Educational level

    

Primary

 

86.8

75.3

 

Secondary

 

82.5

72.1

 

Tertiary

 

75.7

69.6

 

RII (95% CI)

 

1.10 (1.07-1.13)

1.07 (1.03-1.12)

0.369

SII (95% CI)

 

9.18 (6.84-11.50)

5.96 (2.85-9.07)

0.866

Men

    

Educational level

    

Primary

 

87.6

73.3

 

Secondary

 

85.2

75.3

 

Tertiary

 

82.2

71.8

 

RII (95% CI)

 

1.07 (1.04-1.10)

1.04 (0.99-1.09)

0.209

SII (95% CI)

 

5.95 (3.39-8.52)

2.94 (−0.81-6.69)

0.112

  1. * Relative Index of Inequality.
  2. **Slope Index of Inequality.