Table.1 Sociodemographic and baseline characteristics

Gender

 Male

50

 Female

50

Age (years)

 Mean

71.92

 Standard deviation

13.16

Orthopedic surgery type

 Elective

54

 Emergency

46

Creatinine clearance (the Cockcroft–Gault equation)[26]

 30 mL/min to  < 50 mL/min

17

 ≥ 50 mL/min

83

Number of home medications

 1

2

 2

8

 3

14

 4

25

≥ 5

51

Allergies

 No known drug allergy

86

 Yes (to one or more medication)

14