Table 7 Bivariable and multivariable Cox regression analysis of variables associated with ICU-mortality among patients in the SICU (N = 388)

Glasgow coma scale

Sever

135

60

14.43 (6.36–32.73)*

4.06(1.51–10.89)

0.005

Moderate

7

46

2.50 (0.84-7.47)*

0.97(0.30–3.15)

Mild

6

134

1

1

Mechanical ventilation

Yes

145

114

4 (1–15)*

12 (3–45)

0.002

No

3

126

1

1

Potassium

< 3.5

29

20

3.98 (2.43–6.51)*

3.46(1.83–6.55)

< 0.001

3.5-5.0

36

198

1

1

> 5.0

83

22

6.50 (4.39–9.63)*

2.41(1.29–4.51)

0.005

Saturation (Spo₂)

< 90

66

22

4.26 (3.06–5.94)*

1.66(1.10–2.48)

0.014

>=90

82

218

1

1

Feeding

Yes

36

104

1

1

No

112

136

4.29(2.88–6.39)*

3.56(2.20–5.78)

< 0.001

Thromboprophylaxis

Yes

56

107

1

1

No

92

133

7.07(4.62–10.81)*

10.8(6.0419.29)

< 0.001