Table 1 Demographics and clinical characteristics (n = 300/group)

Age, yrs

60.3 ± 11.6

62.0 ± 11.2

0.057

Male sex, n (%)

188 (62.7)

170 (56.7)

0.134

Weight, kg

64.0 ± 11.2

63.4 ± 11.0

0.498

Height, cm

165.5 ± 7.4

165.4 ± 8.0

0.865

BMI, kg/m²

23.3 ± 3.2

23.1 ± 3.2

0.529

ASA physical status, n (%)

0.087

 I

172 (57.3)

148 (49.3)

 II

125 (41.7)

145 (48.3)

 III

3 (1.0)

7 (2.3)

Diabetes, n (%)

44 (14.7)

49 (16.3)

0.573

Gastrointestinal obstruction, n (%)^a

13 (4.3)

0 (0)

 < 0.0001

Fasting for solids, h

34 (24, 38)

24 (23, 36)

 < 0.0001

Fasting for clear liquids, h

11 (10, 12)

11 (10, 12)

0.001