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Table 3 Effectiveness of SWAP IT: Between group differences in mean total lunchbox energy, energy from recommended foods and percentage energy from recommended foods

From: A randomized controlled trial to assess the potential efficacy, feasibility and acceptability of an m-health intervention targeting parents of school aged children to improve the nutritional quality of foods packed in the lunchbox ‘SWAP IT’

Outcome Intervention Control Imputed relative difference between groups at follow upa Mean (CI) P value Complete case relative difference between groups at follow upa Mean (CI) P value
Baseline Mean (SD) (n = 443) Follow-up Mean (SD) (n = 373 Baseline Mean (SD) (n = 583) Follow-up Mean (SD) (n = 487)
Mean total lunchbox energy (kJ) 2691.85 (863.78) 2727.94 (920.14) 2704.60 (959.03) 2812.71 (959.03) −131.61 [− 317.26–54.05] 0.16 − 133.32 [− 345.31–78.68] 0.19
Mean total lunchbox energy from recommended foods (kJ) 1578.62 (622.36) 1624.73 (568.76) 1607.40 (603.92) 1569.93 (591.01) 83.13 [2.65–163.61] 0.04 84.55 [−2.48–171.58] 0.06
Percentage of lunchbox energy from recommended foods 62.14 (24.09) 63.73 (23.89) 62.42 (24.24) 60.00 (23.91) 4.86 [−0.22–9.95] 0.06 5.50 [−0.28–11.29] 0.06
  1. aThe figures presented have been adjusted for baseline results