Table 1. Characteristics of included trials.

Studies	Size, n	Study duration	Study population	Intervention	Comparison
Araki, 2017	41	12 weeks	Pre-diabetic, Japanese	partially abraded brown rice, n = 20	white rice, n = 21
Bui, 2014	60	16 weeks	Pre-diabetic, Vietnamese	pre-germinated brown rice, n = 30	white rice, n = 30
Hsu, 2008	11	6 weeks	Type 2 diabetes mellitus, Taiwanese	pre-germinated brown rice, n = 5	white rice, n = 6
Kondo, 2017	28	8 weeks	Type 2 diabetes mellitus, Japanese	brown rice diet, n = 14	white rice, n = 14
Nakayama, 2017	16	8 weeks	Type 2 diabetes mellitus, Japanese	glutinous brown rice, n = 8	white rice, n = 8
Wang, 2013	57	12 weeks	Pre-diabetic, Chinese Americans	brown rice, n = 28	white rice, n = 29
Zhang, 2011	202	16 weeks	Type 2 diabetes mellitus, Chinese	brown rice, n = 101	white rice, n = 101