Table 3. Distribution of the studied patients according to nasogastric tube use; receiving general anesthesia; using loop diuretics; the presence of pulmonary diseases; levels of WBC, ESR, and CRP; results of blood and respiratory cultures; the number of hospitalization and ICU admission in the last six months; RASS score (number of sedation days on and off); and the type of pneumonia.

NA, not applicable; ESR, erythrocyte sedimentation rate; CRP, C-reactive protein; ICU, intensive care unit; RASS, Richmond Agitation and Sedation Scale; AMS, altered mental status; HAP, hospital-acquired pneumonia; VAP, ventilator-associated pneumonia 

Variable	Number (%)
Nasogastric tube use
NA	32 (6.4)
No	452 (90.4)
Yes	16 (3.2)
Receiving general anesthesia
No	399 (78.8)
Yes	101 (20.2)
Using loop diuretics
No	131 (26.2)
Yes	369 (73.8)
Pulmonary diseases
No	375 (75)
Yes	125 (25)
Leukocyte (WBC) count
High	79 (15.8)
Low	37 (7.4)
Missing	4 (0.8)
Normal	380 (76)
ESR
High	70 (14)
Low	5 (1)
Missing	324 (64.8)
Normal	101 (20.2)
CRP
High	204 (40.8)
Low	14 (2.8)
Missing	255 (51)
Normal	27 (5.4)
Blood culture
NA	307 (61.4)
No organism	193 (38.6)
Respiratory culture
Endotracheal tube	7 (1.4)
NA	392 (78.4)
Nasopharyngeal swap	10 (2)
Normal	52 (10.4)
Sputum "bacteria"	38 (6.7)
Suction	1 (0.2)
Number of hospitalization within the last six months
Two times	65 (13)
Less than two times	216 (43.2)
NA	13 (2.6)
More than two times	132 (26.4)
No	74 (14.8)
Number of ICU admission within the last six months
NA	126 (25.2)
More than nine	1 (0.2)
No	373 (74.6)
RASS score (number of sedation days)
One-hour AMS, confusion, generalized weakness, and dysarthria	1 (0.2)
NA	415 (83)
No	81 (16.2)
Sedation	3 (0.6)
Number of sedation days off	1.76 ± 2.57
How many days was the patient ventilated
NA	255 (51)
More than 10	3 (0.6)
No ventilation	242 (48.4)
Type of pneumonia
Diagnosed with HAP	30 (85.7)
Diagnosed with VAP	1 (2.8)
Diagnosed with aspiration pneumonia	11 (31.4)