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Table 3 Evaluation of the quality of meta-analyses using the AMSTAR-2 quality assessment tool

From: Unicompartmental knee arthroplasty is associated with lower pain levels but inferior range of motion, compared with high tibial osteotomy: a systematic overview of meta-analyses

Item no

1

2 *

3

4 *

5

6

7 *

8

9 *

10

11*

12

13*

14

15*

16

Overall rating

Migliorini et al. [7]

√

 × 

 × 

P

√

√

 × 

√

 × 

 × 

√

√

√

 × 

√

√

Low

Bai et al. [35]

√

 × 

 × 

P

 × 

 × 

 × 

√

√

 × 

√

 × 

 × 

√

 × 

√

Critically low

Huang et al. [17]

√

 × 

 × 

P

√

√

 × 

√

√

 × 

√

√

√

√

 × 

√

Low

Cao et al. [3]

√

√

 × 

P

√

√

 × 

√

√

 × 

√

√

√

√

√

√

Moderate

Santoso et al. [5]

√

 × 

 × 

P

√

√

 × 

√

√

 × 

√

√

√

√

√

√

Moderate

Han et al. [19]

√

√

 × 

P

√

√

 × 

√

√

 × 

√

√

√

√

√

√

Moderate

Fu et al. [21]

√

 × 

 × 

P

√

√

 × 

√

√

 × 

√

√

√

√

√

√

Moderate

Spahn et al. [6]

√

 × 

 × 

P

√

√

 × 

P

 × 

 × 

√

√

√

√

 × 

 × 

Critically low

Zhang et al. [16]

√

 × 

 × 

P

√

√

 × 

√

√

 × 

√

√

√

√

√

√

Moderate

Gandhi et al. [20]

√

 × 

 × 

P

√

√

 × 

√

√

 × 

√

√

√

√

 × 

√

Low

  1. Item 1: described the inclusion for PICO. Item 2: registered the protocol of the review before it was conducted. Item 3: considered the reasons for inclusion of the studies. Item 4: had a comprehensive search strategy. Item 5: completed the study selection independently. Item 6: conducted the data extraction independently. Item 7: provided a list of excluded studies with reasons. Item 8: described the characteristics of the included studies in detail. Item 9: used appropriate tools to assess the risk of bias in the included studies. Item 10: reported the funding sources. Item 11: used proper methods for this meta-analysis. Item 12: discussed the potential risk of bias in the included studies. Item 13: considered the risk of bias in interpreting the results. Item 14: discussed heterogeneity. Item 15: discussed publication bias. Item 16: disclosed funding or conflicts of interest
  2. * Critical domains in AMSTAR-2
  3. √ clear documentation that the study met this itemized requirement, P unclear evidence from the article, × no evidence that requirements were met