Ma 2015.

Methods	Type of trial: efficacy trial Allocation: randomised Intervention model: parallel assignment Masking: — Primary purpose: —
Participants	Condition: T2DM Enrollment: 90 participants Inclusion criteria: — Exclusion criteria: —
Interventions	Intervention(s): metformin (1500 mg/day) Comparator(s): pioglitazone (15 mg/day)
Outcomes	Primary outcome(s): — Secondary outcome(s): — Other outcome(s): blood levels of glucose, insulin and glucagon, insulin sensitivity index, HOMA‐IR, HOMA‐β, 1‐phase index, 2‐phase index, insulin secretion sensitivity index
Study details	Trial identifier: —
Publication details	Language of publication: Chinese / English (abstract) Funding: — Publicationstatus: full article / peer‐reviewed journal
Stated aim of study	Quote from publication: "To observe and evaluate the effects of metformin and pioglitazone on blood glucose, insulin, glucagon, β‐cell function and insulin resistance among patients with diabetes and metabolic syndrome, so as to discuss the role of pancreatic a cells in pathogenesis of type 2 diabetes mainly caused by insulin resistance and the change of a‐cell function after treatment."
Notes	Marked as a study awaiting classification due to publication being in Chinese and a lack of data to assess inclusion. Translators have been contacted. Trial author have been contacted