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Table 2 Comparison of mortality risks between patients admitted for first stroke with different comorbidity categories

From: Temporal trend of comorbidity and increasing impacts on mortality, length of stay, and hospital costs of first stroke in Tianjin, North of China

 

Univariable analysis

Multivariable analysis: Model 1

Multivariable analysis: Model 2

HR (95% CI)

P value

aHRa (95% CI)

P value

aHRa (95% CI)

P value

In-hospital mortality

 None

1.00

 

1.00

 

1.00

 

 Moderate

1.53 (1.10–2.14)

0.013

1.48 (1.06–2.07)

0.022

1.51 (1.08–2.11)

0.016

 Severe

3.50 (2.42–5.07)

 < 0.001

2.88 (1.98–4.17)

< 0.001

2.88 (1.98–4.17)

< 0.001

 Very severe

3.95 (2.78–5.62)

< 0.001

3.84 (2.70–5.46)

< 0.001

3.83 (2.70–5.45)

< 0.001

7-day mortality

 None

1.00

 

1.00

 

1.00

 

 Moderate

1.24 (0.80–1.93)

0.330

1.48 (1.06–2.07)

0.448

1.22 (0.79–1.90)

0.369

 Severe

3.61 (2.52–5.78)

< 0.001

2.88 (1.98–4.17)

< 0.001

2.96 (1.84–4.76)

< 0.001

 Very severe

3.77 (2.40–5.94)

< 0.001

3.84 (2.70–5.46)

< 0.001

3.51 (2.22–5.53)

< 0.001

  1. aHR adjusted hazard ratio, HR hazard ratio
  2. aModel 1: aHR was calculated with adjustments for age and sex; Model 2: aHR was calculated with adjustments for age, sex, season, stroke type