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Table 2 In-hospital mortality meta-regression results

From: The prognostic significance of postoperative hyperbilirubinemia in cardiac surgery: systematic review and meta-analysis

Covariate

Study count

Co-efficient

95% CI

p value

Clamp time*

8

0.0556

0.0334–0.0778

 < 0.0001

Transfusion Units*

8

0.6928

0.3393–1.0463

0.0001

Study year

12

− 0.037

− 0.1131 to 0.0390

0.3402

Age

10

0.0249

− 0.0647 to 0.1145

0.5864

Sex (Male)

10

− 2.7767

− 10.3351 to 4.7817

0.4715

Bilirubin threshold

12

1.0256

− 0.6223 to 2.6734

0.2225

Bilirubin monitoring period

7

0.1577

− 0.1212 to 0.4365

0.2678

CPB time

11

0.0159

− 0.0108 to 0.0427

0.2431

CABG proportion

12

− 0.2853

− 2.8252 to 2.2547

0.8258

Pre-operative liver disease

5

− 7.4876

− 16.3865 to 1.4113

0.0991

  1. CABG Coronary artery bypass graft, CPB Cardiopulmonary bypass
  2. *Significant effect modifiers