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|
Categorical variables
|
Case (n = 16)
|
Matched controls (n = 131)
|
P value
|
|---|
|
n
|
%
|
n
|
%
|
|---|
|
Male
|
10
|
62.5
|
61
|
46.6
|
< 0.001*
|
|
ASA PS
|
0.174
|
|
I–II
|
14
|
87.5
|
101
|
77.1
| |
|
III–IV
|
2
|
12.5
|
30
|
22.9
| |
|
Emergency operation
|
|
Yes
|
4
|
25.0
|
16
|
12.2
|
0.003*
|
|
Anesthetic technique
|
< 0.001*
|
|
ETGA
|
14
|
87.5
|
85
|
64.9
| |
|
LMA
|
2
|
12.5
|
46
|
35.1
| |
|
Difficult airway
|
|
Yes
|
0
|
0
|
17
|
13.0
|
< 0.001*
|
|
Type of inhaled anesthetic
|
0.016*
|
|
Desflurane
|
5
|
31.3
|
18
|
13.7
| |
|
Sevoflurane
|
11
|
68.7
|
107
|
81.7
| |
|
Active smoker
|
|
Yes
|
9
|
56.3
|
26
|
20.0
|
< 0.001*
|
- ASA PS American Society of Anesthesiologists Physical Status, ETGA endotracheal tube general anesthesia, LMA laryngeal mask anesthesia. Data were analyzed by chi-square test and are shown as number (percent). *P < 0.05 is considered statistically significant
