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Table 2 Logistic regression analysis of the associations between diet quality indices and nutrient adequacy in Iranian households (n = 6935)

From: A comparison of diet quality indices in a nationally representative cross-sectional study of Iranian households

Nutrientsa Overall
N (%)
HEI DQI-I
OR 95% CI P-valueb OR 95% CI P-valueb
Protein (g/day)
 Inadequate 1549 (22.3) 1.00  -  - 1.00  -  -
 Adequate 5386 (77.7) 1.01 1.00, 1.02 0.046 1.09 1.08, 1.09 < 0.001
Calcium (mg/day)
 Inadequate 6480 (93.4) 1.00  -  - 1.00  -  -
 Adequate 455 (6.6) 1.11 1.10, 1.13 < 0.001 1.14 1.13, 1.16 < 0.001
Iron (mg/day)
 Inadequate 6815 (98.4) 1.00  -  - 1.00  -  -
 Adequate 120 (1.7) 0.99 0.97, 1.02 0.733 1.08 1.06, 1.11 < 0.001
Vitamin C (mg/day)
 Inadequate 2932 (42.3) 1.00  -  - 1.00  -  -
 Adequate 4003 (57.7) 1.19 1.17, 1.20 < 0.001 1.12 1.11, 1.12 < 0.001
  1. Abbreviations: HEI Healthy Eating Index, DQI-I Diet quality index international
  2. aThe average daily household requirements were calculated by dividing the total daily requirements of all the household members by the number of household members
  3. bAssociations between diet quality indices (continuous independent) and nutrient adequacy (categorical dependent) were examined by using Wald tests of associations for logistic regression