No weight loss at month 4 (P=0.23), but there is significant weight loss at month 9 for GWL (P=0.05).

There is significant weight loss at month 4 and at month 9 for GWL+Armband (both P < 0.0001).

There is significant weight loss at month 4 and at month 9 for Armband alone (both P < 0.01).

No weight loss at month 4 or month 9 for Standard care (both P > 0.05).

At month 4, no significant difference in weight between GWL and GWL+Armband (P=0.23) which means GWL+Armband produced weight loss comparable to the GWL over 4 months.

At month 9, there is borderline significant difference in weight between GWL and GWL+Armband (P=0.06) which means GWL+Armband produced weight loss greater than the GWL over 9 months.

At month 9, no significant difference in weight between Armband alone and GWL (P=0.44) which means Armband alone produced weight loss comparable to the GWL over 9 months.

At month 4, no significant difference in weight between any of the three intervention groups comparing with the Standard care group (All p>0.05).

At month 9, there is significant difference in weight between GWL+Armband and the Standard care (P=0.02).