Risk factors

OR

95% C.I

P-value

Age

0.79

0.44 - 1.4

0.427

Gender

0.70

0.41 - 1.2

0.199

Education level

1.98

0.98 - 3.99

0.052

Admission floor/unit

1.39

0.52 - 3.75

0.504

Visit frequency

1.71

0.93 - 3.11

0.084

Length of stay at hospital

0.84

0.38 - 1.81

0.657