Impact of being underweight on peri-operative and post-operative outcomes of total knee or hip arthroplasty: A meta-analysis

Table 3 Newcastle-Ottawa Scale scores for assessing the quality of included studies

Ref.	Selection				Comparability	Outcome			Total
	Representativeness of the exposed cohort	Selection of the non-exposed cohort	Ascertainment of exposure	Demonstration that outcome of interest	Basis of the design or analysis	Assessment of outcome	Follow-up long enough for outcomes	Adequate follow up
Hartford et al[20], 2020	1	1	0	1	1	1	1	1	7
Katakam et al[18], 2021	1	1	1	1	1	1	1	1	8
Kwon et al[19], 2020	1	1	1	1	1	1	1	1	8
Sloan et al[22], 2019	1	1	0	1	1	1	1	1	7
Hung et al[24], 2019	1	1	1	1	1	1	1	1	8
Sayed-Noor et al[23], 2019	1	1	1	1	1	1	1	1	8
Woo et al[21], 2019	1	1	1	1	1	1	1	1	8
Dowsey et al[27], 2018	1	1	1	1	1	1	1	1	8
Shohat et al[25], 2018	1	1	1	1	1	1	1	1	8
Zusmanovich et al[9], 2018	1	1	1	1	2	1	1	1	9
Mouchti et al[26], 2018	1	1	1	1	1	1	1	1	8
Manrique et al[10], 2017	1	1	0	0	1	1	1	1	6
Anoushiravani et al[30], 2016	1	1	0	1	1	1	1	1	7
Husted et al[29], 2016	1	1	1	1	1	1	1	1	8
Shaparin et al[28], 2016	1	1	1	1	1	1	1	1	8
Zhao et al[31], 2014	1	1	0	1	1	1	1	1	7
Thornqvist et al[32], 2014	1	1	1	1	1	1	1	1	8
Zhang et al[33], 2012	1	1	1	1	1	1	1	1	8