A childhood obesity intervention developed by families for families: results from a pilot study

Table 4 Follow-up analyses examining the effect of dose on intervention outcomes

Outcome variable	Total df	Estimate	SE	t-value	p-value
Predictor variables¹
Child BMI z-score (post)
BMI z-score (pre)	133	0.71	0.058	12.09	<.0001
Dose		0.01	0.05	0.137	0. 89
Child sedentary time (post)
Sedentary time (pre)	81	0.63	0.10	6.49	<.0001
Dose		-0.20	0.30	-0.66	0.51
Child moderate PA (post)
Moderate PA (pre)	81	0.72	0.08	8.68	<.0001
Dose		0.08	0.09	0.86	0.39
Child TV viewing time (post)
TV time (pre)	127	0.66	0.05	12.56	<.0001
Dose		-16.59	2.73	-6.08	<.0001
Child energy intake (post)
Energy intake (pre)	49	0.83	0.10	8.67	<.0001
Dose		-48.92	28.35	-1.73	0.09
Parent support of PA (post)
Support of PA (pre)	144	0.66	0.06	11.35	<.0001
Dose		0.06	0.02	2.74	.006
Parent self efficacy to offer healthy foods (post)	144
Self efficacy (pre)		0.51	0.05	10.51	<.0001
Dose		0.05	0.02	2.84	0.005
Parent offering fruit and vegetables (post)
Offering fruit and vegetables (pre)	144	0.72	0.05	12.89	<.0001
Dose		0.10	0.05	1.89	0.06

[1] The variable of interest at pre intervention and intervention dose were regressed onto the variable of interest at post intervention. Dose effects were only examined for outcomes for which significant intervention effects were identified.

ISSN: 1479-5868