Variable

Control group

Intervention group

Ttest
Pvalue



Mean ± SD
 
Age (m)

56.80 ± 24.487

52.40 ± 26.416

T= 0.473

p=0.640

Height (cm)

111.53 ± 13.89

106.27 ± 15.764

T= 0.971

p=0.340


Median (IQR)

U Value

Pvalue

Weight (kg)

21 (14  23)

14 (13  22)

U= 85

p=0.267


Count (%)

Chisquare

Pvalue

Gender
  
1.292

Male: Female

8 (53.3%): 7 (46.7%)

11(73.3%): 4 (26.7%)

p=0.256

ASA class

ASA I

12 (80%)

11 (73.3%)

0.187

ASA II

3 (20%)

4 (26.7%)

p=1.000^{a}

Surgery type
   
General surgery:

4 (26.7%)

10 (66.7%)
 
ENT surgery:

5 (33.3%)

3 (20%)
 
Plastic surgery:

1 (6.7%)

1 (6.7%)
 
Ophthalmology surgery:

5 (33.3%)

0 (0%)

11.480

Neurosurgery:

0 (0%)

1 (6.7%)

p=0.022^{b,c}

 M = Month, cm = centimetre, kg = kilogram, ASA class = American Society of Anesthesiologists classification, IQR= Interquartile Range
 ^{a} Fisher’s Exact is used instead of Pearson ChiSquare when an assumption is violated
 ^{b} Likelihood ratio is used instead of Pearson ChiSquare when an assumption is violated and the table is bigger than 2*2
 ^{c} Pvalue < 0.05 indicates a significant difference between the groups