Table 3.

Univariate analysis of various factors influencing preoperative fasting time

Variable	N	Median (IQR)	Range	P-value
Sex
Male	1,558	12 (7)	2–216	0.39
Female	2,157	12 (6)	2–96
Nutritional status*
Well-nourished	1,592	12 (8)	2–120	0.41
Malnourished	316	12 (8)	2–216
Disease**
Cancer	1,208	11 (6)	2–216	<0.001
Benign	2,492	12 (6)	2–120
ASA
1–2	1,741	12 (8)	2–216	0.63
3–4	156	11.5 (7)	3–48
Age
>60 years	1,036	12 (7)	2–216	0.54
<60 years	2,679	12 (6)	2–120
Hospital
Public	2,912	12 (8)	2–216	0.94
Private	803	11.5 (4)	2–35
Protocol
Traditional	2,480	13 (5)	6–216	<0.001
Liberal	1,235	8 (8)	2–48

Notes:

^*Data from 1,908 patients

^**data from 3,700 patients.

Abbreviations: IQR, inter-quartile range; ASA, American Society of Anesthesiologists.