Comparing the effectiveness of metformin with lifestyle modification for the primary prevention of type II diabetes: a systematic review and meta-analysis

Table 1 Quality scoring of studies based on the Jadad scale

Study	Randomization	Blinding	An account of all patients	Total Jadad score
DPP [10] (2002)	1	0	1	2
IDPP-1 [11] (2006)	1	0	1	2
Lu, Y. H. et al. [12] (2011)	1	0	1	2
D-CLIP [13] (2016)	2	0	1	3
PREVENT-DM [14] (2017)	2	2	1	5
Andreadis, E. A. et al. [15] (2009)	0	0	0	0

ISSN: 1472-6823