Table 2.

Mean weight difference compared with Weight Watchers at 3 and 12 months

	Weight change baseline to 3 months, kg (SD)	Unadjusted mean weight difference at 3 months, kg (95% CI)	Adjusted mean weight difference at 3 months, kg (95% CI)	Weight change baseline to 12 months, kg (SD)	Unadjusted mean weight difference at 12 months, kg (95% CI)	Adjusted mean weight difference at 12 months, kg (95% CI)
Weight Watchers (constant)	−4.2 (4.1)	0.0	0.0	−3.7 (6.4)	0.0	0.0
NHS programme	−1.6 (2.2)	2.6 (2.0 to 3.1)	2.6 (2.1 to 3.2)	−2.5 (4.2)	1.2 (0.3 to 2.1)	1.2 (0.3 to 2.1)
Rosemary Conley	−3.3 (3.7)	0.9 (0.6 to 1.2)	0.7 (0.4 to 1.0)	−3.1 (5.6)	0.6 (0.0 to 1.1)	0.2 (−0.4 to 0.7)
Slimming World	−4.0 (3.9)	0.2 (−0.1 to 0.5)	0.3 (0.01 to 0.6)	−4.5 (7.0)	−0.8 (−1.4 to −0.3)	−0.7 (−1.2 to −0.2)

SD = standard deviation.