Data from three Phase @ studies were analysed , in which : ( Study @ ) canagliflozin @ and @ mg were compared with placebo as monotherapy for @ weeks ; ( Study @ ) canagliflozin @ and @ mg were compared with placebo as add-on to metformin + sulfonylurea for @ weeks ; or ( Study @ ) canagliflozin @ mg was compared with sitagliptin @ mg as add-on to metformin + sulfonylurea for @ weeks .