Table 4

Adult socio-economic position and education inequalities (Slope Index of Inequality, SII (95% CI)) in adiposity and blood pressure by age and gender

SII educationSII adult socio-economic position
MenWomenp Value for gender difference*MenWomenp Value for gender difference*
BMI (kg/m2)
 36 years1.69 (1.03 to 2.36)2.56 (1.90 to 3.22)0.0720.83 (0.17 to 1.49)1.84 (1.19 to 2.50)0.032
 43 years1.68 (0.91 to 2.44)2.82 (2.05 to 3.59)0.0380.69 (−0.09 to 1.46)3.74 (2.96 to 4.53)0.000
 53 years1.49 (0.57 to 2.41)2.93 (2.01 to 3.85)0.0310.75 (−0.20 to 1.71)1.81 (0.92 to 2.70)0.113
 Age trend†p=0.308p=0.095p=0.057p=0.041p=0.224p=0.524
Waist circumference (cm)
 36 years4.15 (2.27 to 6.04)5.33 (3.44 to 7.23)0.3861.44 (−0.43 to 3.32)3.30 (1.43 to 5.17)0.169
 43 years4.44 (2.53 to 6.36)6.56 (4.63 to 8.49)0.1282.64 (0.69 to 4.60)9.05 (7.08 to 11.0)0.000
 53 years3.77 (1.48 to 6.06)7.21 (4.94 to 9.48)0.0361.77 (−0.58 to 4.13)4.25 (2.06 to 6.44)0.132
 Age trend†p=0.308p=0.025p=0.022p=0.045p=0.875p=0.178
Systolic blood pressure (mm Hg)
 36 years3.87 (1.09 to 6.66)1.81 (−0.99 to 4.61)0.3064.42 (1.67 to 7.16)3.77 (1.02 to 6.51)0.743
 43 years4.14 (1.13 to 7.14)3.89 (0.86 to 9.93)0.9135.39 (2.32 to 8.46)4.82 (1.71 to 9.93)0.797
 53 years7.82 (3.86 to 11.8)5.77 (1.81 to 9.73)0.4711.84 (−2.24 to 5.91)3.96 (0.13 to 7.78)0.457
 Age trend†p=0.080p=0.096p=0.947p=0.205p=0.743p=0.492
Diastolic blood pressure (mm Hg)
 36 years0.38 (−1.88 to 2.65)1.21 (−1.06 to 3.49)0.6130.91 (−1.33 to 3.14)1.81 (−0.42 to 4.04)0.574
 43 years1.52 (−0.76 to 3.80)2.16 (−0.14 to 4.46)0.7002.04 (−0.30 to 4.37)2.71 (0.35 to 5.07)0.691
 53 years3.49 (1.11 to 5.87)2.30 (−0.08 to 4.67)0.485−0.21 (−2.65 to 2.23)1.95 (−0.34 to 4.24)0.205
 Age trend†p=0.028p=0.510p=0.274p=0.433p=0.985p=0.560

  • ↵* Estimated by least-squares regression with the interaction term ridit score×sex. Tests are done separately at each age.

  • ↵† Estimated using mixed models (the model includes the interaction terms ridit score×age, ridit score×sex and ridit score×age×sex).