Targeting Policy for Obesity Prevention: Identifying the Critical Age for Weight Gain in Women

Table 1

Linear regression modelling of body weight in relation to demographic factors (i) unadjusted, (ii) adjusted for parity, and (iii) adjusted for parity and all other variables.

Variable	Body weight (kg)		Unadjusted			Adjusted (parity)			Adjusted (all variables)
	Mean	Median	Coefficient	95% CI	𝑃	Coefficient	95% CI	𝑃	Coefficient	95% CI	𝑃
Year	—	—	0.53	0.51–0.55	<0.01	0.53	0.52–0.55	<0.01	0.53	0.51–0.54	<0.01
Age group					<0.01			<0.01			<0.01
<20	59.4	56.7	—	—		—	—		—	—
20–24	65.2	61.2	5.84	5.57–6.12		5.70	5.42–5.98		5.42	5.13–5.70
25–29	67.1	63.5	7.74	7.47–8.02		7.52	7.23–7.81		7.46	7.16–7.75
30–34	67.2	63.5	7.86	7.57–8.14		7.57	7.26–7.89		7.27	6.94–7.59
35–39	67.6	63.5	8.23	7.89–8.57		7.90	7.52–8.27		7.19	6.80–7.58
≥40	68.0	64.4	8.62	7.99–9.25		8.24	7.58–8.90		7.06	6.39–7.72
Income (SES)	—	—	−0.17	−0.20–−0.14	<0.01	−0.17	−0.21– −0.14	<0.01	−0.27	−0.30–−0.24	<0.01
Urbanicity					<0.01			<0.01			<0.01
Urban	66.0	62.6	—	—		—	—		—	—
Rural	66.9	63.5	0.82	0.63–1.01		0.75	0.56–0.94		1.49	1.30–1.67