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

Table 2 Anthropometric, fruit and vegetable consumption changes from baseline to six months and twelve (Coaching Period), 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=357				n=257				n=251
Mean	83.8	80.1	−3.6**	−3.6	82.0	79.2	−2.8**	−2.9	78.3	79.0	0.7*	0.7
(SD)	(18.4)	(17.3)	(4.9)	(−4.0, -3.1)	(16.6)	(16.5)	(6.3)	(−3.6, -2.1)	(15.6)	(16.5)	(4.2)	(−0.2, 1.6)
Waist Circumference (cm)¥	n=275				n=185				n=184
Mean	99.1	94.7	−4.4**	−4.3	98.2	92.9	−5.3**	−5.4	93.6	92.3	−1.3*	−1.1
(SD)	(13.1)	(12.6)	(5.4)	(−4.9, -3.7)	(12.9)	(13.9)	(9.0)	(−6.7, -4.1)	(12.6)	(13.5)	(8.4)	(−2.5, 0.3)
Body Mass Index (kg/ m ² )¥	n=357				n=257				n=250
Mean	30.1	28.8	−1.3**	−1.3	29.7	28.6	−1.1**	−1.1	28.4	28.6	0.2	0.2
(SD)	(6.1)	(5.7)	(1.8)	(−1.5, -1.1)	(5.7)	(5.4)	(3.0)	(−1.5, -0.8)	(5.3)	(5.4)	(2.1)	(−0.2, 0.6)
Mean	1.7	1.9	0.2**	0.3	1.7	1.9	0.2**	0.3	1.9	1.9	0.0	0.0
(SD)	(1.2)	(0.8)	(1.1)	(0.2, 0.3)	(1.1)	(0.9)	(1.1)	(0.2, 0.3)	(0.8)	(0.9)	(0.9)	(−0.1, 1.1)
Vegetable serves per day#	n=371				n=264				n=264
Mean	2.9	3.9	1.0**	0.9	3.0	3.4	0.4**	0.5	4.0	3.4	−0.6**	−0.5**
(SD)	(1.6)	(1.3)	(1.3)	(0.8, 1.1)	(1.6)	(1.5)	(1.8)	(0.3, 0.6)	(1.3)	(1.5)	(1.6)	(−0.7,-0.3)
Health enhancing PA (sessions)# β	n=371				n=245				n=244
Mean	4.1	5.8	1.8**	1.8	4.3	5.5	1.2*	1.2	6.2	5.5	−0.7*	−0.6
(SD)	(3.9)	(3.7)	(4.3)	(1.4, 2.2)	(3.9)	(5.7)	(6.3)	(0.4,2.0)	(3.5)	(5.7)	(5.7)	(−1.5,0.3)

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.
† 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. Models are limited to participants with data for at least one follow-up (i.e. either 6-months, 12-months or both).

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