Table 6. Multiple logistic regressions predicting the likelihood of the mother correctly classifying her child's weight statusa at 7, 12 and 15 years.

	Mother correct at 7 years		Mother correct at 12 years		Mother correct at 15 years
	OR (95% CI)	P-value	OR (95% CI)	P-value	OR (95% CI)	P-value
Correct (12 years; yes)	—	—	—	—	7.0 (2.6–18.5)	<0.001
Correct (7 years; yes)	—	—	1.1 (0.4–2.8)	0.817	1.8 (0.6–5.6)	0.315
Child's sex (female)	1.2 (0.6–2.2)	0.577	1.4 (0.7–2.7)	0.322	0.8 (0.3–2.1)	0.692
Child's BMI (concurrent)	0.6 (0.5–0.7)	<0.001	0.8 (0.8–0.9)	<0.001	0.8 (0.7–0.9)	<0.001
Mother's BMI	1.0 (0.9–1.0)	0.368	1.0 (1.0–1.1)	0.327	1.1 (1.0–1.2)	0.149
Townsend deprivation indexb	1.4 (0.9–1.4)	0.294	0.9 (0.8–1.1)	0.338	0.8 (0.6–1.2)	0.301
Pubertal maturation	—	—	—	—	1.7 (0.9–3.1)	0.084

Abbreviations: BMI, body mass index; CI, confidence interval; OR, odds ratio.

n=491 at 7 years; n=340 at 12 years; n=226 at 15 years.

^aAccording to UK 1990 growth reference.²

^bBased on 1991 UK census, using enumeration districts as the unit of analysis with the northern region of England as the population for comparison for the calculation of the quintiles.