Study ID	All‐cause mortality	Diabetes‐related complications	Diabetes‐related mortality	HbA1c	Health‐related quality of life	FBG	Insulin sensitivity	Socioeconomic effects	Severe/serious adverse events
Timmers 2016	NR	NR	NR	Glycosylated haemoglobin A1c (IO)	NR	Fasting blood glucose (IO)	"Insulin Sensitivity (HOMA‐IR) and Substrate Kinetics Assessed by Hyperinsulinemic‐Euglycemic Clamp" (IO)	NR	ND
Thazhath 2016	NR	NR	NR	Glycosylated haemoglobin A1c (IO)	NR	Fasting blood glucose (IO)	NR	NR	ND
Brasnyo 2011	NR	NR	NR	NR	NR	NR	HOMA‐IR: "The values of homeostasis model of assessment for insulin resistance and related to B‐cell function (HOMAIR and HOMAb, respectively) were calculated as in Nagaretani et al.and Matthews et al., respectively" (IO)	NR	ND
aIn addition to the definition of endpoint measurement, description of who measured the outcome (AO: adjudicated outcome measurement; IO: investigator‐assessed outcome measurement; SO: self‐reported outcome measurement). FBG: fasting blood glucose, HbA1c: glycosylated haemoglobin A1c, HOMA‐IR: homeostasis model of assessment for insulin resistance, ND: not defined, NR: not reported.