Effectiveness of oral vs intravenous acetaminophen on pain management following total joint arthroplasty: A systematic review and meta-analysis

Table 2 The Methodological Index for Non-Randomized Studies scale

Quality assessment for non-RCT	Barrington	Yu
A clearly stated aim	2	2
Inclusion of consecutive patients	2	2
Prospective of data collection	2	2
Endpoints appropriate to the aim of the study	2	2
Unbiased assessment of the study endpoint	1	1
A follow-up period appropriate to the aims of study	1	1
Less than 5% loss to follow-up	0	0
Prospective calculation of the sample size	2	2
An adequate control group	2	2
Contemporary groups	2	2
Baseline equivalence of groups	2	2
Adequate statistical analyses	2	2
Total score	20	20

RCT: Randomized controlled trial.