Table 1 Comparison of clinical variables between survival and mortality outcomes.

From: The outcomes and prognostic factors of patients requiring prolonged mechanical ventilation

Variables

Number (%) of patients with survival outcomes (n = 1501)

Number (%) of patients with mortality outcomes (n = 320)

P value

Age (years)

69.1 ± 14.5

72.8 ± 12.3

<0.001*

 Age ≥ 80 years

399 (26.6)

112 (35.0)

0.003*

Gender

  

0.851

 Male

887 (59.1)

191 (59.7)

 

 Female

614 (40.9)

129 (40.3)

 

ICU category

  

<0.001*

 Medical ICU

817 (54.4)

214 (66.9)

 

 Surgical ICU

684 (45.6)

106 (33.1)

 

Diagnosis during RCC admission

  

<0.001*

 Lung infection

620 (41.3)

150 (46.9)

0.071

 Decompensated heart failure

165 (11.0)

45 (14.1)

0.123

 Neuromuscular disease

504 (33.6)

57 (17.8)

<0.001*

 Infection other than pneumonia

108 (7.2)

36 (11.3)

0.017*

 Miscellaneous

104 (6.9)

32 (10.0)

0.061

Had at least one comorbidity

  

<0.001*

 No

465 (31.0)

48 (15.0)

 

 Yes

1036 (69.0)

272 (85.0)

 

APACHE II scores

  

<0.001*

 <15

639 (42.8)

79 (25.0)

 

 ≥15

853 (57.2)

237 (75.0)

 

Laboratory examinations

   

 BUN (mg/dl)

36.0 ± 26.3

58.5 ± 37.6

<0.001*

 Creatinine (mg/dl)

1.4 ± 1.4

2.3 ± 1.9

<0.001*

 Haemoglobin (g/dl)

10.0 ± 1.4

9.6 ± 1.4

<0.001*

 Phosphate (mg/dl)

3.5 ± 1.1

3.6 ± 1.5

0.428

 Albumin (g/dl)

  

<0.001*

 >2.0

1397 (93.1)

245 (76.6)

 

 ≤2.0

103 (6.9)

75 (23.4)

 

Required haemodialysis

  

<0.001*

 Yes

187 (12.5)

92 (28.8)

 

 No

1314 (87.5)

228 (71.3)

 

ICU cost (USD)

10599 ± 5839

13719 ± 9591

<0.001*

RCC cost (USD)

7207 ± 2804

6285 ± 3140

<0.001*

With or without tracheostomya

  

<0.001*

 Trans-laryngeal intubation

240 (20.4)

103 (36.3)

 

 Tracheostomy

935 (79.6)

181 (63.7)

 
  1. Data shown as number (%) or mean ± SD. Abbreviations: RCC, respiratory care centre; APACHE II, Acute Physiology and Chronic Health Evaluation II; ICU, intensive care unit; BUN, blood urea nitrogen; USD, United States Dollar.
  2. aOf the patients who were not weaned, 1,459 patients had an artificial airway before death or being discharged.
  3. *Statistically significant between groups (P < 0.05).