Table 4 Cox proportional hazards models for death

5.51 (1.96–15.46)

0.0013

4.29 (1.50–12.30)

0.0070

4.14 (1.45–11.78)

0.0081

1.24 (0.66–2.35)

0.5088

2.36 (1.22–4.55)

0.0111

2.82 (1.34–5.96)

0.0069

2.75 (1.39–5.44)

0.0039

1.79 (0.87–3.71)

0.1174

2.09 (1.03–4.24)

0.0421

2.49 (1.31–4.72)

0.0053

1.53 (0.78–2.97)

0.2156

1.23 (0.62–2.47)

0.5555

1.74 (0.91–3.32)

0.0962

1.53 (0.79–2.97)

0.2122

2.56 (1.34–4.87)

0.0045

1.97 (1.00–3.87)

0.0500