Determinants

Univariate analysis

Multivariate analysis

P

OR (IC95%)

P

ORa (IC95%)

Sex

Women

Men

Age

≤37 y

>37 y

ASA Class

1

2

Type of anesthesia

Others

Narcosis

0.038

0.014

0.004

0.007

1

3.1 (0.9 - 10.2)

1

1.1 (1 - 1.1)

1

2.1 (1.2 - 3.1)

1

3.1 (1.1 - 9.7)

0.887

0.301

0.023

0.146

1

1.09 (0.3 - 3.7)

1

0.3 (0.03 - 2.1)

1

3.3 (1.1 - 9.7)

1

0.9 (0.02 - 2.7)