Table 2 Cox proportional hazard ratios (HR) for all-cause mortality

28-day mortality

Q1 (N = 454)

157 (34.6%)

reference

reference

Q2 (N = 453)

127 (28%)

0.754 (0.597–0.953)

0.018

0.749 (0.590–0.950)

0.017

Q3 (N = 451)

124 (27.5%)

0.735 (0.581–0.930)

0.010

0.711 (0.558–0.906)

0.006

Q4 (N = 455)

105 (23.1%)

0.595 (0.465–0.762)

< 0.001

0.641 (0.495–0.830)

< 0.001

3-month mortality

Q1 (N = 454)

195 (43%)

reference

reference

Q2 (N = 453)

153 (33.8%)

0.726 (0.587–0.897)

0.003

0.705 (0.568–0.874)

0.001

Q3 (N = 451)

156 (34.6%)

0.739 (0.599–0.912)

0.005

0.690 (0.555–0.857)

< 0.001

Q4 (N = 455)

136 (29.9%)

0.611 (0.491–0.760)

< 0.001

0.640 (0.509–0.804)

< 0.001

6-month mortality

Q1 (N = 454)

205 (45.2%)

reference

reference

Q2 (N = 453)

174 (38.4%)

0.782 (0.639–0.957)

0.017

0.753 (0.613–0.925)

0.007

Q3 (N = 451)

175 (38.8%)

0.786 (0.642–0.962)

0.019

0.723 (0.587–0.890)

0.002

Q4 (N = 455)

151 (33.2%)

0.641 (0.519–0.791)

< 0.001

0.662 (0.531–0.824)

< 0.001

1-year mortality

Q1 (N = 454)

217 (47.8%)

reference

reference

Q2 (N = 453)

198 (43.7%)

0.840 (0.693–1.018)

0.076

0.801 (0.658–0.974)

0.026

Q3 (N = 451)

185 (41%)

0.783 (0.644–0.953)

0.015

0.710 (0.580–0.869)

< 0.001

Q4 (N = 455)

175 (38.5%)

0.699 (0.573–0.853)

< 0.001

0.708 (0.575–0.872)

0.001