Table 3.

Logistic regression of under reporter status at trial entry or 36 weeks

Outcomes		10–20 weeks			36 weeks
		OR	95% CI	P	OR	95% CI	P
SEIFA	1	1	–	–	1	–	–
	2	0.56	0.20, 1.55	0.262	0.19	0.06, 0.60	0.003
	3	0.45	0.13, 1.59	0.215	0.15	0.04, 0.56	0.005
	4	0.25	0.07, 0.87	0.029	0.16	0.05, 0.58	0.005
	5	0.34	0.09, 1.29	0.113	0.15	0.04, 0.59	0.007
BMI (kg/m2)	25–29.99	1	–	–	1	–	–
	30–34.99	1.09	0.43, 2.78	0.850	2.07	0.58, 7.46	0.265
	35–39.99	1.61	0.52, 4.96	0.405	2.60	0.58, 11.66	0.212
	≤40	23.10	2.44, 218.6	0.006	10.27	1.75, 60.30	0.010
Age (years)		1.01	0.93, 1.09	0.786
Smoking	No	1	–	–
	Yes	1.57	0.21, 11.7	0.659
Weight satisfaction	Satisfied	1	–	–	1
	Not satisfied	0.49	0.16, 1.48	0.207	0.38	0.11, 1.21	0.101
Shape satisfaction	Satisfied	1	–	–	1
	Not satisfied	0.87	0.29, 2.58	0.806	1.35	0.42, 4.33	0.611
BMI estimate	Correctly estimate	1	–	–
	Under estimate	0.80	0.36, 1.77	0.576
	Over estimate	0.68	0.16, 2.82	0.595
Dieting behaviour	Never				1	–	–
	1–10 times				2.38	1.00, 5.65	0.051
	>  10 times				4.52	1.11, 18.29	0.035
Discrepancy score					1.06	0.55, 2.03	0.864
Risk of depression	No				1	–	–
	Yes				0.20	0.04, 0.93	0.040

Data were analysed by logistic regression

Over reporters were excluded from analysis

BMI Body mass index, CI Confidence interval, OR Odds ratio, SEIFA Socioeconomic indices for areas disadvantage score