Table 8 Bivariable and multivariable Cox-proportional hazard regression analysis of predictors of time to death among mechanically ventilated patients admitted to the ICU in West Amhara, Comprehensive specialized hospitals, Ethiopia, 2022

Variables

Categories

Outcome

CHR (95%CI)

AHR (95% CI)

Death

Censored

Tracheostomy

Yes

18

15

0.57(0.40–0.82)

0.40(0.20–0.80)*

No

225

133

1

1

CPR

Yes

161

14

4.51(3.41–5.9)

8.78(5.38–14.35)**

No

82

134

1

1

SBP at admission

(mmHg)

< 90

146

32

1.99(1.36–2.89)

2.96(1.11–7.87)*

90–140

36

20

1

1

> 140

61

96

0.67(0.48–0.95)

1.07(0.48–2.40)

RR at admission

(rate/minute)

< 12

131

98

1.86(1.38–2.49)

2.74(1.48–5.07)*

12–20

50

10

1

1

> 20

62

40

1.44(0.74–2.80)

0.73(0.25- 2.11)