Table 3 Multilevel logistic regression, presenting the crude Odds Ratio (OR) and adjusted OR (aOR) for 28-day mortality

 1–29

1.97 (1.42–2.74)

< 0.001

1.65 (1.16–2.35)

0.0050

 30–44

1.69 (1.28–2.23)

< 0.001

1.40 (1.03–1.89)

0.0303

 45–59

1.24 (0.94–1.64)

0.1306

1.18 (0.88–1.58)

0.2647

Wave 2

0.71 (0.55–0.92)

0.0089

0.77 (0.59–1.01)

0.0634

 75–84

1.82 (1.41–2.35)

< 0.001

1.67 (1.27–2.19)

< 0.001

 85–94

2.48 (1.86–3.31)

< 0.001

2.18 (1.58–3.00)

< 0.001

 95+

5.94 (2.88–12.25)

< 0.001

4.58 (2.15–9.77)

< 0.001

Male

1.26 (1.03–1.55)

0.0269

1.48 (1.18–1.86)

< 0.001

 Ex-smoker

1.12 (0.91–1.39)

0.2752

1.03 (0.82–1.30)

0.7844

 Current smoker

0.92 (0.58–1.47)

0.7256

0.90 (0.54–1.49)

0.6794

CRP > 40

2.06 (1.64–2.59)

< 0.001

2.13 (1.67–2.71)

< 0.001

Diabetes

1.02 (0.81–1.27)

0.8849

0.98 (0.77–1.25)

0.9006

CAD

1.26 (1.00–1.58)

0.0494

1.07 (0.83–1.38)

0.5983

 Yes

0.94 (0.70–1.27)

0.6904

0.92 (0.66–1.27)

0.6029

 Yes & on treatment

0.82 (0.65–1.03)

0.0871

0.79 (0.62–1.01)

0.0584

 CFS 4

1.68 (1.19–2.37)

0.0033

1.60 (1.12–2.30)

0.0104

 CFS 5–6

2.01 (1.50–2.69)

< 0.001

1.75 (1.27–2.41)

< 0.001

 CFS 7–8

2.79 (2.03–3.83)

< 0.001

2.36 (1.67–3.34)

< 0.001