Describing socioeconomic gradients in children’s diets – does the socioeconomic indicator used matter?

Table 3 Results of correlated component regression analyses for healthy dietary intake outcome measures

BOYS (n = 275)				GIRLS (n = 353)
Variable	CV predictor count^a	β	Model goodness of fit indices^b	Variable	CV predictor count^a	β	Model goodness of fit indices^b
Fruit intake (8 predictors)				Fruit intake (8 predictors)
SEIFA*	100	0.138	R² = 0.052	Employment*	100	−0.122	R² = 0.014
Mother’s education*	100	0.128	R²(CV) = 0.011	Child age*	89	−0.063	R²(CV) = 0.012
Employment*	96	−0.087	SD (CV) = 0.004	Mother’s occupation*	89	−0.063	SD (CV) = 0.009
Mother’s occupation*	92	0.067		Marital status*	82	0.033
Marital status*	82	0.044		Mother’s education*	77	−0.010
Mother’s age*	79	−0.040		Mother’s age*	71	−0.013
Child age*	64	−0.035		SEIFA*	71	−0.002
Income*	47	0.024		Income*	71	−0.006
Vegetable intake (1 predictor)				Vegetable intake (1 predictor)
Mother’s education*	90	0.120	R² = 0.015	Employment*	83	−0.099	R² = 0.010
SEIFA	67		R²(CV) = 0.007	Mother’s education	74		R²(CV) = 0.005
Employment	42		SD (CV) = 0.009	Mother’s occupation	10		SD (CV) = 0.003
Mother’s age	39			SEIFA	9
Child age	22			Income	8
Income	17			Mother’s age	7
Mother’s occupation	2			Child age	5
Marital status	1			Marital status	4
Healthy behaviours^C (4 predictors)				Healthy behaviours^C (1 predictors)
Employment*	100	−0.116	R² = 0.036	Marital status*	54	0.077	R² = 0.006
Marital status*	59	0.076	R²(CV) = 0.008	SEIFA	31		R²(CV) = 0.022
Mother’s occupation*	57	0.082	SD (CV) = 0.004	Child age	16		SD (CV) = 0.013
Mother’s education*	48	0.062		Mother’s age	12
Income	12			Mother’s occupation	10
SEIFA	3			Income	3
Mother’s age	1			Employment	3
Child age^{^}	--			Mother’s education	1

*Predictor retained in final model.
^{^}Predictor not retained in any model.
ß = standardised regression coefficient.
^aCross-validation predictor count - Represents number of regressions in which predictor appeared. Predictor count of 100 indicates that predictor was present in all 100 regressions. Indicates importance of predictor together with standardised regression coefficient (β).
^bModel goodness of fit indices: R²(CV) = cross-validated R²; SD (CV) = Standard deviation for cross-validated R².
^cHealthy behaviours: Breakfast intake, carrying water bottle, help parents with groceries, help to prepare dinner, eat dinner with the family.

ISSN: 1479-5868