variables

Coefficient

Standard error

Wald χ²

P

OR

95% CI

lower 95% CI

lower 95% CI

Professional titles

Chief physician*

Associate chief physician

0.69

0.49

1.97

0.16

1.99

0.76

5.24

Attending physician

0.73

0.25

8.45

0.004

2.08

1.27

3.42

Resident physician

0.88

0.22

15.82

<0.001

2.41

1.56

3.71

Placing the bite block

Yes*

No

0.64

0.28

5.40

0.02

1.90

1.11

3.25

Consider the influence of surgical site and position

Yes*

No

1.27

0.65

3.89

0.048

3.57

1.01

12.62

Consider the influence of age

Yes*

No

0.64

0.216

8.67

0.003

1.89

1.24

2.89