Association between sarcopenic obesity and higher risk of type 2 diabetes in adults: A systematic review and meta-analysis

Table 2 Quality assessment of the included studies

Author	Sénéchal et al[35], 2012	Lu et al[18], 2013	Poggiogalle et al[36], 2016	Ma et al[37], 2016	Xiao et al[38], 2017	Kang et al[39], 2017	Aubertin- Leheudre et al[40], 2017	Park et al[41], 2018	Scott et al[46], 2018	Kreidieh et al[42], 2018	Khazem et al[43], 2018
Selection
Represents cases with independent validation	1	1	1	1	1	1	1	1	1	1	1
Cases are consecutive or obviously representative	1	1	1	1	1	1	1	1	1	1	1
Controls from the community	1	1	1	1	1	1	1	1	1	1	1
Controls have no history of sarcopenic obesity	1	1	1	1	1	1	1	1	1	1	1
Comparability
Controls are comparable for the most important factors	1	1	1	1	1	1	1	1	1	1	1
Control for any additional factor	0	0	1	0	0	1	0	1	0	0	0
Ascertainment of exposure
Secured record or structured interview where blind to/control status	1	1	1	1	0	1	1	1	1	1	1
Same method of ascertainment for cases and controls	1	1	1	1	1	1	1	1	1	1	1
Cases and controls have completed follow up	0	0	0	1	0	0	0	0	1	0	0
Total score	7	7	8	8	6	8	7	8	8	7	7

Newcastle-Ottawa Scale (NOS) for longitudinal and cross-sectional studies. Yes = 1, No (not reported, not available) = 0; Studies with scores of 0-3, 4-6, 7-9 were considered as low, moderate and high quality, respectively.