Body weight and waist circumference
Mean weight changes differed significantly between the case management and usual care groups (P < 0.001) (Fig. 1A). The greatest weight loss in the intervention group (-4.0 kg, 95% CI -5.6 to - 2.5) and net weight loss between groups (-5.0 kg, - 7.2 to - 2.9) occurred at 8 months. By 12 months, participants in the case management group lost an average of-2.4 kg (-4.1 to -0.6), whereas participants in the usual care group gained 0.6 kg (-1.0 to 2.2), a net difference of -3.0 kg (-5.4 to -0.6). More participants in the case management group than the usual care group lost up to 5% (53 vs. 32%) and >5% (20 vs. 14%) of initial weight (x^sup 2^ = 8.7, P = 0.03).