Age (years)

29

26

70 to 74

33

32

75 to 79

26

28

11

14

Gender

female

53

48

male

47

52

Social status quintile†

lowest

20

20

next lowest

22

22

middle

20

19

next highest

17

17

highest

18

18

missing

4

4

Medication in prior year§

ACE inhibitor

33

32

allopurinol

7

7

antidepressant

10

9

benzodiazepine

21

21

bronchodilator

5

6

calcium channel blocker

27

28

digoxin

6

9

furosemide

8

9

glaucoma eye drops

6

7

glucocorticoid

4

4

gastric acid suppressor

23

25

insulin

2

3

levothyroxine

11

11

neuroleptic

2

2

oral anticoagulant

8

9

oral antiplatelet agent

1

2

oral hypoglycemic

9

12

statin

19

20

Surgery type

thoracic

2

2

abdominal

26

26

retroperitoneal

2

1

vascular

10

11

neurosurgical

2

2

external head and neck

3

3

unclassified¶

1

0

lower urologic or gynecologic

20

20

orthopedic

25

23

breast or skin

6

5

ophthalmologic

4

5