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Table 2 Age adjusted prevalence a , prevalence differences and prevalence ratio in educational inequalities in BMI ≥30 kg/m 2 and BMI ≥35 kg/m 2

From: Social and spatial patterns of obesity diffusion over three decades in a Norwegian county population: the HUNT Study

  HUNT1 (1984-86) HUNT2 (1995-97) HUNT3 (2006-08)
Prev. (%) Prev. diff. (%) Prev. ratio Prev. (%) Prev. diff. (%) Prev. ratio Prev. (%)  Prev. diff. (%)  Prev. ratio
BMI ≥30 kg/m 2
Men
 Primary 9.5 4.5 1.9 19.0 7.5 1.7 30.4 14.0 1.9
 Secondary 7.0 2.0 1.4 15.4 3.9 1.3 24.1 7.7 1.5
 Tertiary 5.0 Ref. Ref. 11.5 Ref. Ref. 16.4 Ref. Ref.
Women
 Primary 14.1 6.2 1.8 21.1 9.2 1.8 27.7 10.6 1.6
 Secondary 10.3 2.4 1.3 17.7 5.8 1.5 24.3 7.2 1.4
 Tertiary 7.9 Ref. Ref. 11.9 Ref. Ref. 17.1 Ref. Ref.
BMI ≥35 kg/m 2
Men
 Primary 1.3 0.9 3.3 2.9 1.4 1.9 7.1 5.1 3.6
 Secondary 0.6 0.2 1.5 2.2 0.7 1.5 4.2 2.2 2.1
 Tertiary 0.4 Ref. Ref. 1.5 Ref. Ref. 2.0 Ref. Ref.
Women
 Primary 4.0 2.5 2.7 6.1 3.0 2.0 10.3 5.7 2.2
 Secondary 2.4 0.9 1.6 4.5 1.4 1.5 7.2 2.6 1.6
 Tertiary 1.5 Ref. Ref. 3.1 Ref. Ref. 4.6 Ref. Ref.
  1. Men and women 30–69 years old in The Nord-Trøndelag Health Study.
  2. aDirect adjustment for age using five years age groups, the standard population being men and women 30–69 years old as of 1. January 1999 in The Nord-Trøndelag Health Study.