Table 1. Characteristics and methodological quality of included studies.

Studies	Nation	LOE	Study quality	Number of samples	BMI (kg/m2) Classification (Number of each group)	Age (years) (M± SD)	Sex (male: female)
Takeuchi H,. 2019 [14]	Japan	2b	7/9	63	BMI<25: (36) BMI≥25: (27)	55.6±16	49:14
Trinchieri A, et al. 2016 [19]	Italy	3b	7/9	1698	BMI<18.5: (91) 18.5≤BMI<24.9: (924) 25≤BMI<29.9: (542) 30≤BMI: (141)	45.9±14.6	984:714
Lee SC, et al. 2007 [20]	South Korea	3b	7/9	704	BMI<25: (475) BMI≥25: (229)	42.8±13.2	470:234
Ekeruo WO, et al. 2004 [21]	The USA	3b	7/9	1021	BMI<25: (881) BMI≥25: (140)	53.2±14.9	ND
Daudon M, et al. 2006(1) [22]	France	3b	7/9	1930	BMI<25: (1259) 25≤BMI<30: (480) 30≤BMI: (191)	ND	1370:561
Daudon M, et al. 2006(2) [23]	France	3b	7/9	2464	BMI<25: (1416) 25≤BMI<30: (703) 30≤BMI: (345)	53.6±11.4	1760:704
Chou YH, et al. 2010 [24]	Taiwan, China	3b	7/9	907	18.5≤BMI<25: (251) 25≤BMI<27: (304) 27≤BMI: (352)	53.9±14	661:246
del Valle EE, et al. 2010 [25]	Argentina	3b	7/9	817	BMI<24.9: (337) 25≤BMI<29.9: (322) 30≤BMI: (158)	ND	459:358
Mosli HA, et al. 2012 [26]	Saudi Arabia	2b	7/9	173	BMI<18: (5) 18.5≤BMI<24.9: (30) 25≤BMI<30: (64) 30≤BMI: (24)	46.03±12.7	131:42
Al-Hayek S, et al. 2013 [27]	The USA	3b	7/9	325	BMI<25: (88) 25≤BMI<30: (103) 30≤BMI: (134)	51.8±12.5	162:163
Najeeb Q, et al. 2013 [28]	India	3b	7/9	100	BMI<25: (28) 25≤BMI<30: (38) 30≤BMI: (34)	38.49±13.72	70:30
Çaltık Yılmaz A, et al. 2015 [29]	Turkey	2b	6/9	84	BMI<18: (52) 18≤BMI<25: (20) 25≤BMI: (12)	ND	42:42
Fram EB, et al. 2015 [30]	The USA	3b	7/9	382	BMI<25: (79) 25≤BMI<30: (140) 30≤BMI: (163)	46.4±15	224:382
Shavit L, et al. 2014 [31]	The UK	3b	6/9	2132	BMI<25: (833) 25≤BMI<30: (863) 30≤BMI: (436)	46±15	1503:629
Almannie RM, et al. 2019 [32]	Saudi Arabia	3b	7/9	433	BMI<18: (24) 18≤BMI<25: (81) 25≤BMI: (328)	ND	316:117

LOE: level of evidence; BMI: body mass index; ND: not demonstrated.