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Table 1 Sociodemographic characteristics of households and mean HEI and DQI-I scores according to sociodemographic characteristics (n = 6935)

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

Characteristics Overall
N (%)
HEI
Mean (SD)
DQI-I
Mean (SD)
Age of household heada
 Young age (reference) 1903 (27.4) 33.4 ± 6.47 36.3 ± 7.85
 Middle-aged 3502 (50.5) 34.2 ± 6.42 37.9 ± 7.58
 Older 1530 (22.0) 34.0 ± 6.51 39.0 ± 7.70
Sex of household head
 Males (reference) 6601 (95.2) 34.0 ± 6.45 37.7 ± 7.75
 Females 334 (4.8) 33.0 ± 6.52 37.1 ± 7.44
Level of education of household headb
 Low (reference) 3929 (56.7) 32.5 ± 5.98 37.6 ± 7.35
 Moderate 2341 (33.8) 35.3 ± 6.40 37.4 ± 8.00
 High 665 (9.6) 37.9 ± 6.73 39.4 ± 8.81
Area of residence
 Rural (reference) 2417 (34.9) 31.4 ± 5.92 37.1 ± 7.34
 Urban 4518 (65.2) 35.3 ± 6.34 38.1 ± 7.92
Household size
 Less than 5 members (reference) 3218 (46.4) 34.7 ± 6.66 37.4 ± 8.12
 5 or more members 3717 (53.6) 33.3 ± 6.21 38.0 ± 7.39
  1. Abbreviations: HEI Healthy Eating Index, DQI-I Diet quality index international
  2. aYoung age (18–36 years old), middle aged (> 36–56 years old), older (> 56 years old)
  3. blow (no formal schooling, less than primary school, the primary school completed), medium (secondary school completed, high school completed), and high (college/university completed)