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Table 2 Odds ratios (OR) with 95% confidence intervals (CI) of overall intervention effect (intervention vs. control) on eating breakfast, lunch, dinner and supper in weekdays and weekend days, and having a regular meal frequency, in the total sample

From: Possible effects of a free, healthy school meal on overall meal frequency among 10–12-year-olds in Norway: the School Meal Project

  Model I (N = 160) Model II (N = 160) Model III (N = 160)
OR CI P-value OR CI P-value OR CI P-value
Breakfast every weekday 0.78 0.27–2.28 0.653 0.83 0.27–2.56 0.743 0.67 0.19–2.38 0.537
Lunch every weekday 0.96 0.31–2.97 0.942 0.94 0.30–2.92 0.916 1.06 0.33–3.39 0.926
Dinner every weekday 1.24 0.45–3.40 0.680 0.80 0.24–2.63 0.713 0.71 0.20–2.46 0.584
Supper every weekday 1.75 0.88–3.48 0.108 1.18 0.53–2.64 0.673 0.86 0.36–2.02 0.858
Breakfast weekend 0.28* 0.09–0.84 0.023 0.25* 0.08–0.79 0.019 0.15* 0.03–0.72 0.017
Lunch weekend 0.68 0.35–1.33 0.263 0.52 0.24–1.12 0.096 0.52 0.24–1.15 0.106
Dinner weekend 2.73 0.76–9.82 0.125 3.54 0.84–14.95 0.085 3.70 0.79–17.25 0.096
Supper weekend 1.70 0.87–3.31 0.119 1.40 0.61–3.24 0.426 1.23 0.50–2.96 0.653
3 or 4 meals weekdays 0.73 0.31–1.74 0.479 0.79 0.29–2.17 0.650 0.82 0.27–2.45 0.718
3 or 4 meals weekend days 1.33 0.62–2.88 0.464 1.36 0.58–3.19 0.481 1.17 0.49–2.83 0.725
  1. Model I intervention vs. control; Model II intervention vs. control, adjusted for baseline values; Model III intervention vs. control, adjusted for baseline values, gender and SES
  2. * P ≤ 0.05