Table 3 Subgroup meta-analysis for all-cause mortality

 Prospective

6

2.67 (2.01, 3.55)

28.7

0.220

0.029

 Retrospective

4

1.58 (1.28, 1.93)

28.1

0.243

 Yes

4

2.33 (1.53, 3.53)

62.9

0.044

0.649

 No

6

2.05 (1.48, 2.83)

64.1

0.016

 <62

6

2.72 (2.04, 3.64)

52.6

0.121

0.029

 ≥62

4

1.61 (1.30, 2.00)

37.1

0.189

 <29

5

2.13(1.58, 2.87)

18.2

0.299

0.940

 ≥29

4

2.25(1.38, 3.68)

84.2

0.000

 <26

6

1.92 (1.45, 2.55)

70.7

0.004

0.152

 ≥26

4

2.85 (1.98,4.10)

0

0.694

 <9.4

6

2.58 (1.97, 3.37)

28.9

0.218

0.124

 ≥9.4

2

1.72 (1.29, 2.31)

0

0.561