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

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)

	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)

Notes:
** significant at p-value<0.001; * significant at p-value <0.05.
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.
£ Includes data imputed from last observed record (baseline, 3-months or 6-months) where data was missing.
† Paired analysis; ¥ Matched pairs t-test; ^# non parametric (wilcoxon test).
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.
€ 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.

ISSN: 1471-2458