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Table 2 Study quality of the included studies based on the Newcastle–Ottawa scale

From: Factors affecting the incidence of postoperative periprosthetic fractures following primary and revision hip arthroplasty: a systematic review and meta-analysis

 

Author, year

Representativeness of the exposed cohort

Selection of the nonexposed cohort

Ascertainment of exposure

Demonstration that outcome of interest was not present at start of the study

Comparability of cohorts on the basis of the design or analysis

Assessment of the outcome

Follow-up long enough for outcomes*

Adequacy of follow-up of cohort**

Total

Quality

1

Sarvilinna et al. [19]

1

1

1

1

2

1

1

1

09

Good

2

Sarvilinna et al. [20]

1

1

1

1

2

1

0

0

08

Good

3

Sarvilinna et al. [21]

1

1

1

1

2

1

0

0

08

Good

4

Berend et al. [22]

1

1

1

1

2

1

1

1

09

Good

5

Cook et al. [23]

1

1

1

1

2

1

1

1

09

Good

6

Meek et al. [24]

1

1

1

1

2

1

0

1

08

Good

7

Zhang et al. [25]

1

1

1

1

2

1

0

0

07

Good

8

Savin et al. [26]

1

1

1

1

2

1

0

0

07

Good

9

Singh et al. [27]

1

1

1

1

2

1

1

1

09

Good

10

Singh et al. [28]

1

1

1

1

2

1

1

1

09

Good

11

Katz et al. [29]

1

1

1

1

2

1

1

1

09

Good

12

Thien et al. [30]

1

1

1

1

2

1

0

1

08

Good

13

Ricioli Jr et al. [31]

1

1

1

1

2

1

1

1

09

Good

14

Gromov et al. [32]

1

1

1

1

2

1

0

1

08

Good

15

Lindberg-Larsen et al. [33]

1

1

1

1

2

1

0

0

07

Good

16

Tamaki et al. [34]

1

1

1

1

2

1

0

0

07

Good

  1. *Follow-up more than 24 months
  2. **Lost to follow-up rate more than 10% is considered inadequate