Table 3.

Proportion of participants losing at least 5% and at least 10% baseline weight and relative risk for weight loss at 12 months and 24 months

	Proportion of participants losing at least 5% baseline weight			Behavioural programme vs brief intervention		52-week programme vs 12-week programme
	Brief intervention	12-week programme	52-week programme	Relative risk (95% CI)	p value	Relative risk (95% CI)	p value
≥5% weight loss
12 months	25% (2·97)	42% (2·15)	57% (2·16)	2·01 (1·51–2·67)	<0·0001	1·36 (1·14–1·62)	0·0005
24 months	22% (2·87)	27% (1·93)	39% (2·12)	1·47 (1·08–1·99)	0·0131	1·44 (1·16–1·78)	0·0009
≥10% weight loss
12 months	9% (2·02)	15% (1·56)	30% (2·00)	2·40 (1·52–3·78)	0·0002	2·00 (1·53–2·62)	<0·0001
24 months	9% (1·93)	12% (1·43)	18% (1·69)	1·80 (1·11–2·93)	0·0182	1·49 (1·09–2·04)	0·0125

Data are % (SE) or relative risk (95% CI).