Comparative efficacy of cementless bipolar hemiarthroplasty and proximal femoral nail anti-rotation in unstable intertrochanteric fractures: A meta-analysis

Table 1 Quality assessment of the included cohort studies using the Newcastle-Ottawa Scale tool

Ref.	Selection				Comparability	Outcome			Overall quality	Quality
	Representativeness of the exposed cohort	Selection of the non-exposed cohort	Ascertainment of exposure	Outcome was not present at start of study	Control of 2 important factors	Assessment of outcome	Follow-up long enough	Adequacy of follow-up of cohort	Assessment
Cai et al[26], 2022		*	*	*	**	*	*		7	Very good
Song et al[27], 2022		*	*	*	**	*	*		7	Very good
Zhou et al[28], 2019		*	*	*	**	*	*	*	8	Very good