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Table 1 Descriptives of included studies

From: How do studies assess the preventability of readmissions? A systematic review with narrative synthesis

Study characteristics (n = 48)

No. or percentage of studies

Year of publication, range

1988–2016

Country, n (%)

 USA

32 (67%)

 Other

16 (33%)

Study design, n (%)

 Retrospective

30 (63%)

 Cross-sectional

10 (21%)

 Prospective

8 (16%)

Setting, n (%)

 Single center

37 (77%)

 Multicenter

11 (23%)

 Number of readmissions reviewed, n ± SD

226 ± 208

Planned readmission excluded, n (%)

 Yes

30 (63%)

 No

11 (23%)

 Not reported

7 (14%)

All-cause readmission, n (%)

 Yes

9 (19%)

 No

39 (81%)

 Percentage preventable readmissions, mean, ± SD

27,8 ± 16,7%

Scoring of preventability, n (%)

 Binary

22 (46%)

 Scale

4 (8%)

 Categorical

17 (35%)

 Not applicable (a priori studies)

5 (11%)

A priori preventable causes determined, n (%)

 Yes

32 (67%)

 No

16 (33%)

Training of reviewers, n (%)

 Yes

16 (33%)

 No

2 (4%)

 Not reported

30 (63%)

Number of reviewers, n (%)

 Individual

8 (16%)

 Duo

23 (48%)

 Duo + team

2 (4%)

 Individual + team

2 (4%)

 Team

5 (11%)

 Individual or duo + panel

3 (6%)

 Other

5 (11%)

Double check, n (%)

 All cases

28 (58%)

 Partially

7 (15%)

 No

3 (6%)

 Not reported

10 (21%)

Additional sources, n (%)

 Interview or survey

13 (27%)

 None

35 (73%)