Table 3.

Demographic and clinical characteristics of two groups.

	Study Group (N = 168)	Control group (N = 144)
Age (years)	77.29 ± 13.34	19.98 ± 13.94
Sex, male (%)	56	59
Apache II score	20.57 ± 4.88	21.4 ± 4.48
Tracheotomy (%)	47.6	45.1
Successful weaning (%)	65.3	52.1
Ventilator acquired pneumonia (%)	17.3	18.1
Blood stream infection (%)	2.4	4.2
Albumin	2.08 ± 0.54	2.11 ± 0.57
BUN	39.64 ± 35.86	41.03 ± 41.58
Creatinine	1.45 ± 1.28	1.50 ± 1.81
GCS	8.48 ± 3.34	8.08 ± 2.91
RSI	145.43 ± 64.15	138.37 ± 63.62
Days using ventilator***	38.41 ± 3.35	43.69 ± 14.89

***Significance with p<0.001 using student's t-test.