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Table 3 Univariate analysis: tier 1 and 2 predictors of C-POMS summary score on D3, D5 and D8

From: Predictors of total morbidity burden on days 3, 5 and 8 after cardiac surgery

Variable

D3 (n = 441)

D5 (n = 419)

D8 (n = 177)

Median

C-POMS/Rho

p

Median

C-POMS/Rho

p

Median

C-POMS/Rho

p

Tier 1 variables

Demographics

Age

0.188

0.000

0.110

0.025

0.133

0.078

Age quartiles

 1 (0–59)

2.0

0.002

2.0

0.010

2.0

0.300

 2 (60–68)

3.0

2.0

3.0

 3 (69–74)

3.0

2.0

4.0

 4 (≥75)

4.0

2.5

3.0

Age grp 2

 <65

2.0

0.000

2.0

0.044

2.5

0.083

 65–74

3.0

2.0

3.0

 ≥75

4.0

2.5

3.0

Age grp 3

 <70

3.0

0.001

2.0

0.426

3.0

0.225

 70–79

3.0

2.0

3.0

 >80

5.0

2.0

3.0

Gender

 M

3.0

0.024

2.0

0.016

3.0

0.215

 F

3.0

3.0

2.5

Medical history

Diabetes

 Y

4.0

0.000

2.5

0.015

3.0

0.308

 N

3.0

2.0

3.0

Cerebrovascular disease

 Y

4.0

0.028

3.0

0.023

4.0

0.219

 N

3.0

2.0

3.0

Neurological history

 Y

4.0

0.103

3.0

0.016

4.0

0.553

 N

3.0

2.0

3.0

Congestive heart failure

 Y

4.0

0.009

4.0

0.025

4.0

0.310

 N

3.0

2.0

3.0

COPD/lung disease

 Y

4.0

0.005

3.0

0.012

3.0

0.380

 N

3.0

2.0

3.0

Renal disease

 Y

5.0

0.064

5.0

0.001

5.0

0.025

 N

3.0

2.0

3.0

POSSUM ECG

 Normal

3.0

0.000

2.0

0.000

3.0

0.200

 Sinus abnormal

5.0

4.0

 AF

4.0

3.0

3.0

 Any other abnormal

5.0

2.5

2.0

Paced

 Y

5.0

0.005

4.0

0.014

2.5

0.875

 N

3.0

2.0

3.0

Dialysis

 Y

5.5

0.073

7.5

0.006

5.5

0.064

 N

3.0

2.0

3.0

Pre-operative measurements

Body mass index(kg/m2)

0.100

0.043

0.077

0.130

0.099

0.206

 LVEF

 Good

3.0

0.013

2.0

0.011

3.0

0.013

 Fair

3.0

2.0

4.0

 Poor

5.0

5.0

4.0

Intra-operative

Type of surgery

 CABG

3.0

0.000

2.0

0.000

3.0

0.718

 AVR

4.0

3.0

3.0

 MVR

5.0

3.0

3.5

 CABG + AVR

4.0

2.0

3.0

 AVR + MVR

3.0

3.0

4.5

 CABG + MVR + AVR

5.0

5.0

6.0

 Other

5.0

3.0

3.0

Urgency of op

 Elective

3.0

0.002

2.0

0.061

3.0

0.327

 Urgent

4.0

2.0

3.0

Within first 12 h

Systolic blood pressure (highest)

0.002

0.959

0.026

0.599

−0.089

0.238

Tier 2 variables

Demographics

Ethnicity

 Caucasian

3.0

0.052

2.0

0.008

3.0

0.532

 Asian

2.0

1.0

3.0

 Black

5.0

3.0

3.0

 Other

2.0

3.0

1.0

Medical history

 Smoking

 Current

2.0

0.048

2.0

0.395

3.0

0.753

 Ex

3.0

2.0

3.0

 Never

3.0

2.0

3.0

Family Hx CAD

 Y

3.0

0.002

2.0

0.019

3.0

0.686

 N

4.0

2.0

3.0

Atrial arrhythmia

 Y

4.0

0.021

3.0

0.007

3.0

0.781

 N

3.0

2.0

3.0

Pre-operative measurements

 Albumin

−0.210

0.000

−0.144

0.004

−0.183

0.019

 Haemoglobin

−0.279

0.000

−0.180

0.000

−0.143

0.058

 Heart rate

0.090

0.058

0.179

0.000

0.080

0.294

 Weight

0.044

0.369

0.042

0.399

0.101

0.186

No diseased vessels

      

 0

4.0

0.011

3.0

0.000

3.0

0.203

 1

3.0

2.0

2.0

 2

3.0

2.0

2.0

 3

3.0

2.0

3.0

NYHA class

 1

2.0

0.001

1.0

0.002

3.0

0.001

 2

3.0

2.0

3.0

 3

4.0

3.0

3.0

 4

5.0

2.5

5.0

CCSC class

 0

3.0

0.041

3.0

0.042

3.0

0.317

 1

2.0

2.0

2.0

 2

3.0

2.0

3.0

 3

3.0

2.0

3.0

 4

4.0

2.0

4.0

Cardiomegaly

 Y

5.0

0.000

3.0

0.000

4.0

0.141

 N

3.0

3.0

3.0

 Not stated

3.0

3.0

3.0

Extracardiacarteriopathy

 Y

5.0

0.003

3.0

0.004

4.5

0.147

 N

3.0

2.0

3.0

Current medications

Diuretic

 Y

4.0

0.003

3.0

0.003

3.0

0.780

 N

3.0

2.0

3.0

Intra-operative

Cardiopulmonary bypass

 Y

3.0

0.001

2.0

0.072

3.0

0.098

 N

2.0

1.0

1.0

Within 1st 12 h after surgery

 Total drainage

0.139

0.004

0.030

0.542

0.031

0.679

Post-operative (D1)

Heart rhythm

 Sinus rhythm

3.0

0.000

2.0

0.002

3.0

0.473

 Sinus tachycardia

2.5

2.0

2.5

 Sinus bradycardia

4.0

2.0

4.0

 Atrial fibrillation

5.0

3.0

4.0

 Other

3.0

2.0

3.0

Inotropes

 Y

4.0

0.004

3.0

0.070

3.0

0.923

 N

3.0

2.0

3.0