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Table 1 Participants’ baseline characteristics identified as potential moderators and moderated intervention effects on weight change at 3- and 9-months

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

Baseline characteristic Control (n = 125) Intervention (n = 123)a Moderated effect on weight at 3-months Moderated effect on weight at 9-months
  n % n % Diff SE P Diff SE P
Age category
 18–24 years 38 30.4 36 29.3 −1.1 0.6 0.04 −1.6 1.0 0.65
 25–29 years 39 31.2 27 22.0 −3.2 0.7 −2.8 1.0
 30–35 years 48 38.4 60 48.8 −1.5 0.5 −2.5 0.8
Gender
 Female 79 63.2 73 59.3 −1.1 0.4 0.01 −1.3 0.7 0.02
 Male 46 36.8 50 40.7 −2.8 0.5 −3.8 0.8
Socioeconomic status
 1st, 2nd & 3rd quintilesb 7 5.6 8 6.5 −0.7 1.4 0.40 −3.5 2.1 0.06
 4th & 5th quintilesc 118 94.4 115 93.5 −1.9 0.3 −2.3 0.5
Ethnicity
English 90 72.0 82 66.7 −2.2 0.4 0.08 −2.3 0.6 0.79
Other 35 28.0 41 33.3 −0.9 0.6 −2.0 0.9
Education level
 High school or below 21 16.8 27 22.0 −0.8 0.8 0.35 −1.6 1.2 0.81
 Some university or technical school 25 20.0 22 17.9 −1.9 0.8 −2.2 1.2
 University bachelor degree or higher 79 63.2 74 60.2 −2.1 0.4 −2.5 0.7
Income (AU$)
 <$AUS 80,000 94 75.2 100 81.3 −1.4 0.4 0.02 −1.9 0.6 0.20
 >$AUS 80,000 31 24.8 23 18.7 −3.2 0.7 −3.5 1.1
Recruitment sourced
 GP letter 31 25.4 37 31.1 −1.3 0.6 0.64 −1.7 1.0 0.56
 Print Media 39 32.0 30 25.2 −1.6 0.6 −3 1.0
 Electronic media 52 42.6 52 43.7 −2 0.5 −1.8 0.8
Significant other
 Yes 68 54.4 76 61.8 −2.2 0.4 0.14 −2.5 0.7 0.79
 No 57 45.6 47 38.2 −1.2 0.5 −2.2 0.8
Living situation
 Alone 16 12.8 12 9.8 −2.5 1.0 0.47 −2.4 1.6 0.92
 Not alone 109 87.2 111 90.2 −1.7 0.4 −2.3 0.6
Interventionist
 Dietitian 1 74 59.2 77 61.6 −2.1 0.4 0.31 −2.6 0.7 0.51
 Dietitian 2 51 40.8 48 38.) −1.4 0.5 −1.9 0.8
  1. AU$ Australian Dollars, Diff difference, GP general practitioner, SE standard error; aAll participants had measured variables excluding two participants who did not complete baseline self-report surveys; bLowest quintiles; cHighest quintiles; dSeven participants (three control, six intervention) did not recall their recruitment source and were excluded from the moderation analysis on recruitment source