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Table 2 Independent associations of diet quality, socio-demographic and lifestyle factors on overweight or obesity, number (percent) and odds ratio (95 % confidence intervals)

From: The use of a dietary quality score as a predictor of childhood overweight and obesity

N (%) Overweight 1565 (19.3) Obese 531 (6.6)
  OR (95 % CI)
Diet Quality Score (DQS continuous)   0.99 (0.98 1.01) 0.94 (0.92 0.97)
Z-DQSa   0.98 (0.91 1.05) 0.78 (0.70 0.87)
DQS (quintiles) Q1 (Highest Diet Quality) 1.00 1.00
Q2 1.00 (0.80 1.25) 1.40 (0.91 2.15)
Q3 1.12 (0.89 1.41) 1.78 (1.16 2.73)
Q4 0.97 (0.77 1.23) 1.55 (1.02 2.36)
Q5 (Lowest Diet Quality) 1.08 (0.86 1.35) 2.24 (1.50 3.35)
Gender Boys 1.00 1.00
Girls 1.49 (1.29 1.72) 1.61 (1.27 2.03)
Parent Education Third level 1.00 1.00
Non-degree 1.20 (0.97 1.47) 1.92 (1.22 3.02)
Higher second level 1.25 (1.03 1.51) 2.08 (1.38 3.13)
<= Lower secondary level 1.45 (1.17 1.80) 3.47 (2.30 5.21)
Physical Activity 9 days or more 1.00 1.00
6–8 days 1.10 0.93 1.31) 1.50 (1.12 2.00)
3–5 days 1.50 (1.25 1.80) 2.46 (1.83 3.31)
1–2 days 1.22 (0.88 1.70) 3.09 (1.98 4.82)
None 1.37 (0.87 2.16) 5.50 (3.27 9.27)
Television Viewing 0 to <1 h 1.00 1.00
1 to <3 h 1.15 (0.96 1.37) 1.77 (1.27 2.47)
3 h or more 1.59 (1.23 2.05) 2.73 (1.80 4.14)
Parent Body Mass Index category Normal weight 1.00 1.00
Overweight 1.77 (1.49 2.10) 3.68 (2.65 5.12)
Obese 2.66 (2.18 3.23) 7.32 (5.23 10.25)
  1. Unadjusted odds ratios, reference category dependent variable: normal weight
  2. aa one standard deviation increase in DQS. All variables listed in the table were analysed in separate models with chid BMI category