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Table 2 Multinomial regression analysis for change in physical HRQL

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

  Worse physical HRQL Better physical HRQL
Beta OR (95% CI) Beta OR (95% CI)
Age (per year) −0.03 0.97 (0.92–1.01) −0.00 1.00 (0.95–1.04)
Body mass index (per point) 0.02 1.02 (0.94–1.09) − 0.04 0.96 (0.91–1.02)
EuroSCORE (per point) 0.16 1.18 (0.95–1.46) −0.03 0.98 (0.81–1.18)
LVEF > 50% 0 1.00 0 0
LVEF 30–50% 1.67 5.32 (0.41–69.61) 0.60 1.82 (0.43–7.65)
LVEF < 30% 1.15 3.16 (0.25–39.56) 0.66 1.94 (0.50–7.61)
Hemoglobin (per point) − 0.03 0.97 (0.65–1.44) − 0.24 0.79 (0.56–1.10)
Creatinine (per point) − 0.01 0.99 (0.98–1.01) − 0.00 1.00 (0.99–1.01)
Preoperative physical HRQL (per point)
 Singular −1.25***   0.54  
 Quadratic 0.02*** a −0.01* a
Preoperative mental HRQL (per point) 0.00 1.00 (0.98–1.03) 0.01 1.01 (0.99–1.03)
Male gender 0.07 1.07 (0.43–4.47) 0.11 1.12 (0.52–2.41)
Active smoking 0.41 1.51 (0.79–2.88) 0.45 1.57 (0.91–2.69)
Hypertension 0.51 1.67 (0.91–3.06) − 0.04 0.96 (0.60–1.55)
Myocardial infarction 0.18 1.19 (0.50–2.84) 0.37 1.45 (0.69–3.04)
Stroke 0.99* 2.68 (1.04–6.88) 0.47 1.60 (0.98–3.79)
Pulmonary disease 0.44 1.56 (0.55–4.43) 0.86* 2.36 (1.05–5.31)
Atrial fibrillation −3.17* 0.04 (0.00–0.97) −1.50 0.22 (0.05–1.10)
Peripheral vascular disease − 1.23* 0.29 (0.10–0.90) 0.20 1.23 (0.57–2.64)
Unstable angina −0.47 0.62 (0.24–1.63) 0.22 1.25 (0.57–2.75)
Diabetes mellitus 0.22 0.25 (0.59–2.65) −0.13 0.88 (0.49–1.60)
  1. Unchanged HRQL was the reference category. Worse and Better HRQL were defined as ≥5 points change in delta HRQL
  2. LVEF left ventricular ejection fraction, HRQL health related quality of life
  3. * = p < 0.050, *** = p < 0.001
  4. aSince clinical interpretation of odds ratios is limited for quadratic equations this is not presented