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Table 3 Intention-to-treat analysis: Anthropometric, fruit and vegetable consumption changes from baseline to six months (coaching period) and twelve, and from six months to twelve months (no contact period)

From: Effectiveness of Australia’s Get Healthy Information and Coaching Service®: maintenance of self-reported anthropometric and behavioural changes after program completion

  COACHING PERIOD NO CONTACT PERIOD
  6-month 12-month 6-12 months †
  (end of coaching) † (maintenance follow-up) †  
  Baseline 6-month Mean change Adjusted € change (95% CI) Baseline 12-month Mean change Adjusted € change (95% CI) 6-month 12-month Mean change Adjusted € change (95% CI)
Weight (kg)¥ n=1000    n=1000    n=1006   
Mean 86.5 84.7 −1.8** −1.8 86.5 84.9 −1.6** −1.6 84.7 84.9 0.2* 0.2
(SD) (20.0) (19.6) (3.9) (−2.1,-1.6) (20.0) (19.8) (4.3) (−1.9,-1.4) (19.7) (19.8) (2.2) (−0.2,0.5)
Waist Circumference (cm n=756    n=756    n=806   
Mean 101 98.8 −2.2** −2.2 101 98.4 −2.6 −2.6** 98.6 98.3 −0.3* −0.3
(SD) (15.8) (15.9) (4.3) (−2.5,-1.9) (15.8) (16.3) (5.8) (−3.0,-2.2) (15.8) (16.1) (4.2) (−0.8,0.2)
Body Mass Index (kg/m 2 n=998    n=998    n=1001   
Mean 31 30.5 −0.5** −0.5 31 30.5 −0.5** −0.5 30.6 30.5 −0.1 −0.1
(SD) (6.4) (6.4) (1.2) (−0.5,-0.4) (6.4) (6.4) (1.8) (−0.7,-0.4) (6.4) (6.4) (1.4) (−0.2,0.1)
Fruit serves per day# n=1010    n=1011    n=1011   
Mean 1.7 1.8 0.1** 0.1 1.7 1.8 0.1** 0.1 1.8 1.8 0.0 0.0
(SD) (1.3) (1.1) (0.8) (0.1, 0.2) (1.3) (1.1) (0.8) (0.1,0.2) (1.1) (1.1) (0.5) (−0.1,0.1)
Vegetable serves per day# n=1010    n=1010    n=1011   
Mean 2.8 3.3 0.5** 0.5 2.8 3.2 0.4** 0.4 3.3 3.2 −0.2** −0.1
(SD) (1.6) (1.5) (1.2) (0.4,0.6) (1.6) (1.5) (1.3) (0.3,0.4) (1.5) (1.5) (0.9) (−0.2,0.1)
Health enhancing PA (sessions)#β n=1010    n=1010    n=1011   
Mean 3.9 4.6 0.7** 0.7 3.9 4.4 0.5** 0.5 4.6 4.4 −0.2* −0.2
(SD) (3.9) (3.9) (2.8) (0.5,0.8) (3.9) (4.5) (3.5) (0.3,0.7) (3.9) (4.5) (2.8) (−0.4,0.1)
  1. Notes:
  2. ** significant at p-value<0.001; * significant at p-value <0.05.
  3. Ŧ Baseline and six month data is sourced from the GHS coaching sample and the twelve month data is sourced from independent evaluation coaching cohort data.
  4. £ Includes data imputed from last observed record (baseline, 3-months or 6-months) where data was missing.
  5. † Paired analysis; ¥ Matched pairs t-test; # non parametric (wilcoxon test).
  6. β Health enhancing Physical Activity (PA) sessions – based on the number of sessions per week for walking and moderate physical activity that were ≥30minutes and for vigorous physical activity that were ≥ 20minutes.
  7. € Adjusted for baseline values and age, gender, education level, employment status, Socio Economic Index For Areas, and Region; presents marginal means (or mean differences) with 95% Confidence Interval (CI) from linear mixed models that control for repeated measures and adjust for potential confounders, with the outcome time points of 6-months and 12-months.