Study	Reason for exclusion
Bailey 2005	treatment regimens not comparable (rosiglitazone plus metformin versus metformin)
Baksi 2004	treatment regimens not comparable (rosiglitazone plus gliclazide versus gliclazide)
Barnett 2003	treatment regimens not comparable (rosiglitazone plus sulfonylureas versus sulfonylureas plus placebo)
Dailey 2004	treatment regimens not comparable (rosiglitazone plus glyburide/metformin versus placebo plus glyburide/metformin)
Fonseca 2000	treatment regimens not comparable (rosiglitazone plus metformin versus placebo plus metformin)
Fonseca 2003	treatment regimens not comparable (rosiglitazone plus placebo versus rosiglitazone plus nateglinide)
Gomez‐Perez 2002	treatment regimens not comparable (rosiglitazone plus metformin versus placebo plus metformin)
Hubacek 2004	rosiglitazone treatment less than 24 weeks
Kerenyi 2004	treatment regimens not comparable (rosiglitazone plus glibenclamide versus glibenclamide)
McCluskey 2004	treatment regimens not comparable (rosiglitazone plus glimepiride versus glimepiride)
Negro 2005	treatment regimens not comparable (rosiglitazone plus metformin versus placebo plus metformin)
Raskin 2001	treatment regimens not comparable (rosiglitazone plus insulin versus placebo plus insulin)
Reynolds 2002	treatment regimens not comparable (rosiglitazone plus insulin plus life‐style modification versus placebo plus insulin plus life‐style modification)
Rosenstock 2006a	treatment regimens not comparable (rosiglitazone plus glipizide versus placebo plus glipizide)
Tan 2005a	rosiglitazone treatment less than 24 weeks
Tan 2005b	rosiglitazone treatment less than 24 weeks
Vongthavaravat 2002	treatment regimens not comparable (rosiglitazone plus sulfonylureas versus sulfonylureas alone)
Wang 2005	treatment regimens not comparable (rosiglitazone versus "control" without treatment)
Weissman 2005	treatment regimens not comparable (rosiglitazone plus metformin versus metformin)
Wolffenbuttel 2000	treatment regimens not comparable (rosiglitazone plus sulfonylureas versus sulfonylureas plus placebo)
Wong 2005	treatment regimens not comparable (rosiglitazone plus insulin versus insulin)
Zhu 2003	treatment regimens not comparable (rosiglitazone plus sulfonylureas versus sulfonylureas plus placebo)