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Table 3 Multinomial regression analysis for change in mental HRQL

From: Preoperative determinants of quality of life a year after coronary artery bypass grafting: a historical cohort study

 

Worse mental HRQL

Better mental HRQL

Beta

OR (95% CI)

Beta

OR (95% CI)

Age (per year)

−0.02

0.98 (0.93–1.02)

0.01

1.01 (0.97–1.04)

Body mass index (per point)

0.02

1.02 (0.96–1.08)

0.01

1.01 (0.96–1.06)

EuroSCORE (per point)

0.02

1.02 (0.85–1.23)

−0.07

0.94 (0.80–1.10)

LVEF > 50%

0

0

0

0

LVEF 30–50%

−0.36

0.84 (0.21–3.39)

1.13

3.09 (0.60–15.83)

LVEF < 30%

− 0.18

0.70 (0.19–2.63)

0.66

1.93 (0.40–9.36)

Hemoglobin (per point)

−0.15

0.86 (0.61–1.23)

0.03

1.07 (0.80–1.43)

Creatinine (per point)

0.01

1.01 (1.00–1.02)

−0.00

1.00 (0.99–1.01)

Preoperative physical HRQL (per point)

− 0.00

1.00 (0.95–1.05)

0.08***

1.08 (1.04–1.13)

Preoperative mental HRQL (per point)

 Singular

0.02

 

−1.07**

 

 Quadratic

−0.01

 

0.02**

 

 Cubic

0.00

a

0.00**

a

Male gender

0.15

1.17 (0.52–2.61)

−0.04

0.96 (0.50–1.85)

Active smoking

− 0.09

0.92 (0.51–1.65)

0.03

1.04 (0.65–1.65)

Hypertension

0.16

1.18 (0.71–1.95)

0.12

1.13 (0.75–1.71)

Myocardial infarction

0.20

1.23 (0.60–2.51)

−0.56

0.57 (0.29–1.11)

Stroke

− 0.03

0.97 (0.37–2.50)

0.18

1.19 (0.57–2.52)

Pulmonary disease

0.37

1.45 (0.63–3.34)

−0.62

0.54 (0.25–1.14)

Atrial fibrillation

0.39

1.48 (0.44–4.99)

−0.35

0.71 (0.23–2.15)

Peripheral vascular disease

0.00

1.00 (0.41–2.44)

0.34

1.41 (0.72–2.77)

Unstable angina

0.17

1.12 (0.52–2.74)

0.20

1.22 (0.62–2.41)

Diabetes mellitus

− 0.6

0.94 (0.49–1.81)

0.02

1.02 (0.60–1.74)

  1. Unchanged HRQL was the reference category. Worse and Better HRQL were defined as ≥5 points change in delta HRQL respectively
  2. LVEF Left ventricular ejection fraction, HRQL health related quality of life
  3. **p = < 0.005, *** = p < 0.00
  4. aSince clinical interpretation of odds ratios is limited for quadratic and cubic equations this is not presented