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Table 2 Means and standard deviations for weight, food scoresa and physical activity measures by allocation at baseline, 3- and 9-months and time specific difference at 3-months after controlling for allocation, practice, gender and baseline values

From: Improved eating behaviours mediate weight gain prevention of young adults: moderation and mediation results of a randomised controlled trial of TXT2BFiT, mHealth program

Outcomes Baseline 3-months 9-months
Mean SD Mean SD Mean SD
Weight, kg
 Control 79.3 12.6 78.8 12.6 78.4 12.8
 Intervention 78.4 11.2 76.0 10.7 74.9 10.8
Time specific difference I-C (95 % CI)    −1.8 (−2.5, −1.2) P <0.001 −2.3 (−3.3, −1.3) P <0.001
Fruit scoreb
 Control 2.54 0.93 2.80 0.89 2.63 0.88
 Intervention 2.40 0.70 2.95 0.81 3.01 0.85
Time specific difference I-C (95 % CI)    0.20 (0.03, 0.38) P = 0.025 0.36 (0.17, 0.54) P <0.001
Vegetable scoreb
 Control 3.28 1.13 3.64 1.22 3.63 1.22
 Intervention 3.28 1.22 4.11 1.24 4.13 1.22
Time specific difference I-C (95 % CI)    0.46 (0.22, 0.65) P <0.001 0.41 (0.18, 0.65) P = 0.001
SSB scorec
 Control 4.12 0.97 4.29 0.83 4.34 0.72
 Intervention 4.17 0.91 4.57 0.52 4.58 0.52
Time specific difference I-C (95 % CI)    0.49 (0.23, 0.75) P <0.001 0.27 (0.12, 0.41) P <0.001
Take-out meal scored
 Control 3.12 0.83 3.36 0.82 3.45 0.77
 Intervention 3.20 0.80 3.71 0.51 3.68 0.61
Time specific difference I-C (95 % CI)    0.25 (0.09, 0.40) P = 0.002 0.17 (0.02, 0.32) P = 0.032
PA, MET minutes per week
 Control 1646.78 1474.61 1861.84 1687.22 2318.30 2033.76
 Intervention 1619.93 1581.14 2210.52 2255.98 2404.78 1855.67
Time specific difference I-C (95 % CI)    251.9 (−138.8, 642.6) P = 0.21 76.98 (−354.39, 508.36) P = 0.73
PA, total days of PA per week
 Control 7.36 3.83 7.77 3.79 8.49 4.19
 Intervention 6.63 3.33 8.80 3.71 8.73 3.47
Time specific difference I-C (95 % CI)    1.1 (0.32, 1.86) P = 0.005 0.48 (−0.37, 1.33) P = 0.27
  1. CI confidence interval, C control, I intervention, MET minutes, metabolic equivalent of task minutes, SD standard deviation, SSB sugar-sweetened beverages
  2. aValidated short questions were on a sliding scale, with a higher score, indicating a more desired response and for the purpose of the mediation analysis were used as continuous variables, referred to as food scores; bFruit and vegetables were scored one (zero serves per day) through seven (six or more serves per day) with a difference of one unit representing approximately one serve per day; cSSB was scored one (zero or diet per week) through five (3000 mL or more per week) with a difference of one unit representing one litre (L) per week; dTake-out meals was scored one (one or less per week) through four (six to seven per week) with a difference of one unit representing one-two take-out meals per week