Table 3 Results for the multivariate regression models for the weighted and Box–Cox-transformed values of transaminases.

From: Longitudinal relationship of liver injury with inflammation biomarkers in COVID-19 hospitalized patients using a joint modeling approach

Outcome

Variables

Estimate (β)

SE

edf

P

AST (UI/L)

Intercept

 − 2.697

1.090

1.000

0.014

Exitus (Ref: Alive)

0.060

0.108

1.000

0.579

D-dimer

0.952

0.452

1.000

0.036

IL-6

0.102

0.029

1.000

 < 0.001

s(Age)

See Fig. 2

1.000

0.715

s(Time) (Alive)

See Fig. 2

4.892

 < 0.001

s(Time) (Deceased)

See Fig. 2

1.001

0.270

ALT (UI/L)

Intercept

 − 1.657

0.713

1.000

0.020

Exitus (Ref: Alive)

 − 0.251

0.126

1.000

0.046

CRP

 − 0.008

0.001

1.000

 < 0.001

D-dimer

0.579

0.265

1.000

0.029

s(Age)

See Fig. 2

2.988

0.003

s(Time) (Alive)

See Fig. 2

4.689

 < 0.001

s(Time) (Deceased)

See Fig. 2

3.965

 < 0.001

GGT (UI/L)

Intercept

 − 4.028

1.135

1.000

 < 0.001

Sex (Ref: Male)

0.339

0.126

1.000

0.008

Exitus(Ref: Alive)

 − 0.131

0.190

1.000

0.490

CRP

 − 0.002

0.002

1.000

0.373

D-dimer

1.549

0.465

1.000

 < 0.001

IL-6

 − 0.017

0.030

1.000

0.566

Lymphocytes

 − 0.007

0.003

1.000

0.021

s(Age)

See Fig. 2

2.777

0.085

s(Time) (Alive)

See Fig. 2

5.103

 < 0.001

s(Time) (Deceased)

See Fig. 2

4.194

 < 0.001

ALP (UI/L)

Intercept

 − 0.584

0.055

1.000

 < 0.001

Exitus (Ref: Alive)

0.242

0.131

1.000

0.065

s(Age)

See Fig. 2

2.054

0.569

s(Time) (Alive)

See Fig. 2

4.397

0.004

s(Time) (Deceased)

See Fig. 2

3.871

 < 0.001

  1. SE means standard error. The edf number represents the parameters needed to estimate the effect of a covariate, indicating the complexity of the functional form of the smooth effect.