Table 3 Cox proportional hazard ratios (HR) for all-cause mortality

Hospital mortality

 Continuous variable per 1 unit

2.87(2.23,3.69)

< 0.0001

1.93(1.42,2.61)

< 0.0001

 Tertiles of SHR ^a

  T1

Ref.

Ref.

  T2

2.5(1.26,4.96)

0.01

2.06(1.02,4.14)

0.04

  T3

4.06(2.17,7.60)

< 0.0001

2.16(1.11,4.19)

0.02

 P for trend

< 0.0001

0.04

ICU mortality

 Continuous variable per 1 unit

2.75(2.02,3.74)

< 0.0001

1.7(1.17,2.47)

0.01

 Tertiles of SHR ^a

  T1

Ref.

Ref.

  T2

2.47(1.01, 6.06)

0.05

1.97(0.79,4.93)

0.15

  T3

5.2(2.33,11.62)

< 0.0001

2.43(1.04,5.67)

0.04

 P for trend

< 0.0001

0.04