Table 2.

Number of study children (n) and percentage with overweight (OW) at four years of age in four groups of residential areas categorised by the contextual variable of neighbourhood purchasing power, totally and stratified for each selected predictor

	Neighbourhood purchasing power a
	<10		10–19.9		20–29.9		30+
	n	OW (%)	n	OW (%)	n	OW (%)	n	OW (%)
Totalb	310	6.8	746	13.4	860	12.4	104	13.5
Child’s gender
Male	159	7.5	359	10.3	446	12.1	45	11.1
Female	151	6.0	387	16.3	414	12.8	59	15.3
LGA c
No	299	6.4	721	12.8	828	12.0	101	13.9
Yes	11	18.2	24	33.3	28	28.6	2	0.0
Mother’s BMI before pregnancy c
≤25	227	3.7	535	11.8	582	10.7	67	11.9
25–30	57	12.3	120	17.5	139	17.3	18	22.2
30+	18	18.8	48	18.8	77	19.5	7	28.6
Father’s BMI c
≤25	147	5.4	330	8.5	349	6.9	38	10.5
25–30	110	6.4	256	14.1	298	14.4	35	14.3
30+	15	6.7	46	28.3	57	28.1	10	30.0
Parental educational level c
None post-secondary	59	6.8	193	14.0	348	16.7	39	17.9
One post-secondary	88	8.0	242	12.0	218	12.4	29	10.3
Both post-secondary	144	5.6	235	12.8	194	3.1	24	16.7

^aProportion (%) of families with low purchasing power (according to Swedish standards; <19,500 USD annual income) among all resident families with at least one child (up to 19 years old) in a neighbourhood area (parish)

^bThe total number of children in the birth cohort with data on overweight at four years of follow-up = 2,026; it was possible to geo-code 2,020 of these children

^cPredictors with missing data, cf. Table 1