Table 2 Comparison of 28-day ICU survivors and non-survivors

Age at ICU admission, years

67.5 ± 11.4

69.7 ± 11.7

< 0.001

Age group

0.011

 < 65 years

339 (40.1%)

129 (32.6%)

 ≥ 65 years

507 (59.9%)

267 (67.4%)

Gender

0.631

 Male

478 (56.5%)

218 (55.1%)

 Female

368 (43.5%)

178 (44.9%)

Smoking

0.346

 No

602 (71.2%)

292 (73.7%)

 Yes

244 (28.8%)

104 (26.3%)

HTN

0.468

 No

431 (50.9%)

193 (48.7%)

 Yes

415 (49.1%)

203 (51.3%)

Hyperlipidemia

0.098

 No

585 (69.1%)

292 (73.7%)

 Yes

261 (30.9%)

104 (26.3%)

DM

0.067

 No

705 (83.3%)

313 (79.0%)

 Yes

141 (16.7%)

83 (21.0%)

COPD

0.435

 No

492 (58.2%)

221 (55.8%)

 Yes

354 (41.8%)

175 (44.2%)

HF

0.014

 No

720 (85.1%)

315 (79.5%)

 Yes

126 (14.9%)

81 (20.5%)

CKD

0.109

 No

774 (91.5%)

351 (88.6%)

 Yes

72 (8.5%)

45 (11.4%)

Metastasis

< 0.001

 No

436 (51.5%)

151 (38.1%)

 Yes

410 (48.5%)

245 (61.9%)

Admission type

< 0.001

 Elective

242 (28.6%)

15 (3.8%)

 Emergency

587 (69.4%)

373 (94.2%)

 Urgent

17 (2.0%)

8 (2.0%)

ICU type

< 0.001

 MICU

332 (41.3%)

258 (65.2%)

 SICU/TSICU

291 (36.2%)

76 (19.2%)

 CCU/CSRU

180 (22.4%)

62 (15.7%)

SAPS II

35.0 (29.0–41.5)

43.0 (36.0–53.0)

< 0.001

SOFA

2.0 (1.0–4.0)

4.0 (2.0–6.0)

< 0.001

ICU LOS

2.0 (1.2–4.0)

2.8 (1.6–5.7)

< 0.001

MV

< 0.001

 No

554 (69.0%)

202 (51.0%)

 Yes

249 (31.0%)

194 (49.0%)

Vasopressor

0.007

 No

634 (79.0%)

285 (72.0%)

 Yes

169 (21.0%)

111 (28.0%)

DNR

< 0.001

 No

816 (96.5%)

342 (86.4%)

 Yes

30 (3.5%)

54 (13.6%)