In a secondary analysis of the intention-to-treat weight loss data with last measured weight carried forward gave a highly significant diet group by time by gender interaction ( p = @ ) with men doing better in the No Choice group overall ( maximum difference `` No Choice '' -@ kg vs. `` Choice '' -@ kg@ @ kg at @months ) and women doing better in the Choice group overall ( maximum difference Choice -@ kg vs. `` No Choice '' -@ kg@ @ kg at @months ) .