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Table 2 Multi-variable-adjusted odds ratio and 95 % CI of obesity and hypertension per tertile (T) of Dietary Guideline Index (DGI) in a nationally representative sample of Australian men (n = 2346) and women (n = 2562)

From: Diet quality is associated with obesity and hypertension in Australian adults: a cross sectional study

  Dietary guideline index P-trenda
T1 T2 T3
Overweight and obese
 Menb
  Cases, n 587 547 501 -
  Proportion, % 71.3 70.0 69.8 -
  Crude 1.0 0.94 (0.68, 1.31) 0.92 (0.65, 1.32) 0.68
  Model 1 1.0 0.85 (0.60, 1.19) 0.84 (0.59, 1.20) 0.32
  Model 2 1.0 0.71 (0.49, 1.02) 0.64 (0.45, 0.92) 0.014
 Women
  Cases, n 404 505 551 -
  Proportion, % 58.1 56.9 55.1 -
  Crude 1.0 0.95 (0.71, 1.28) 0.89 (0.65, 1.21) 0.43
  Model 1 1.0 0.88 (0.65, 1.20) 0.75 (0.55, 1.02) 0.06
  Model 2 1.0 0.83 (0.58, 1.19) 0.68 (0.48, 0.96) 0.025
Central adiposity
 Men
  Cases, n 508 461 430 -
  Proportion, % 61.0 58.3 59.4 -
  Crude 1.0 0.89 (0.65, 1.22) 0.94 (0.68, 1.30) 0.66
  Model 1 1.0 0.77 (0.56, 1.05) 0.83 (0.59, 1.19) 0.29
  Model 2 1.0 0.66 (0.48, 0.93) 0.68 (0.48, 0.97) 0.030
 Women
  Cases, n 494 597 606 -
  Proportion, % 69.5 66.4 63.7 -
  Crude 1.0 0.87 (0.61, 1.23) 0.77 (0.55, 1.07) 0.12
  Model 1 1.0 0.71 (0.50, 1.02) 0.56 (0.41, 0.79) 0.001
  Model 2 1.0 0.70 (0.47, 1.06) 0.53 (0.37, 0.77) 0.001
Hypertensionc
 Men
  Cases, n 225 187 139 -
  Proportion, % 27.0 23.6 19.1 -
  Crude 1.0 0.84 (0.64, 1.10) 0.64 (0.45, 0.91) 0.011
  Model 1 1.0 0.68 (0.51, 0.92) 0.53 (0.37, 0.76) 0.001
  Model 2 1.0 0.67 (0.49, 0.93) 0.52 (0.35, 0.78) 0.001
  Model 3 1.0 0.71 (0.52, 0.99) 0.56 (0.37, 0.85) 0.006
 Women
  Cases, n 125 190 192 -
  Proportion, % 17.6 21.1 20.2 -
  Crude 1.0 1.26 (0.86, 1.85) 1.19 (0.75, 1.88) 0.48
  Model 1 1.0 1.03 (0.67, 1.59) 0.81 (0.49, 1.34) 0.36
  Model 2 1.0 1.08 (0.69, 1.69) 0.86 (0.50, 1.49) 0.54
  Model 3 1.0 1.13 (0.73, 1.75) 0.90 (0.52, 1.53) 0.62
  1. a Data were analyzed using multi-variable-adjusted logistic regression. Model 1: adjusted for age and education; Model 2: additionally adjusted for smoking, physical activity, urban or rural location, energy intake misreporting and information on whether a participant was on a diet and whether their dietary recall was typical of their habitual consumption; Model 3: additionally adjusted for body mass index
  2. b Analyses were based on n = 2324 due to exclusion of underweight men
  3. c Hypertension was defined as blood pressure ≥140/90 mmHg