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Table 1 Demographic and Baseline Data in Both Groups

From: Lack of impact of nil-per-os (NPO) time on goal-directed fluid delivery in first case versus afternoon case starts: a retrospective cohort study

Variable

AM (n = 353)

PM (n = 118)

p-value for group difference

Age (years)

60 ± 14

60 ± 17

0.9

Gender

 Male (%)

166 (47%)

53 (45%)

0.75

 Female (%)

187 (53%)

65 (55%)

 

Height (cm)

169 ± 11

168 ± 11

0.38

Weight (kg)

78 ± 18

77 ± 21

0.74

BMI (kg/m^2)

27.1 ± 5.5

27 ± 6

 

ASA Class

 I

3 (0.9%)

1 (0.9%)

0.19

 II

63 (18%)

27 (23%)

 

 III

249 (71%)

76 (64%)

 

 IV

38 (11%)

15 (12%)

 

Procedure

 Laparoscopic

131 (37%)

27 (23%)

0.005

 Open

222 (63%)

91 (77%)

 

Epidural

105 (30%)

14 (12%)

< 0.001

Arterial Line

271 (77%)

55 (47%)

< 0.001

NPO time (hours)

10.0 ± 2.5

12.5 ± 3.1

< 0.001

Duration (hours)

6.2 ± 2.7

4.1 ± 1.9

< 0.001

EBL (milliliters)

129 ± 135

107 ± 128

0.12

  1. Two-sample t-test for continuous variables and Pearson's chi-squared test for binary/categorical variables. ASA American Society of Anesthesiologists, BMI Body Mass Index, NPO nil per os. P-values bolded of variables with significant difference between the AM vs PM groups