Table 1 Demographic data of patients (n = 153)

Age group (years)

 65–74

103

67.3

 75–84

42

27.5

 ≥ 85

8

5.2

Gender

 Male

77

50.3

 Female

76

49.7

Ethnicity

 Malay

29

19.0

 Chinese

97

63.4

 Indian

24

15.7

 Others

3

2.0

Diagnosis

 Non-cancer

98

64.1

 Cancer

55

35.9

Nature of surgery

 Minor

85

55.6

 Major

68

44.4

Surgical specialty

 Breast surgery

17

11.1

 Colorectal surgery

8

5.2

 Endocrine surgery

7

4.6

 Hepatobiliary surgery

9

5.9

 Upper gastrointestinal surgery

7

4.6

 Cardiothoracic surgery

8

5.2

 Gynaecology

10

6.5

 Neurosurgery

6

3.9

 Ophthalmology

34

22.2

 Orthopaedic surgery

6

3.9

 Otolaryngology

5

3.3

 Plastic surgery

2

1.3

 Urology

27

17.6

 Vascular surgery

7

4.6

ASA physical status

 ASA I

2

1.3

ASA II

120

78.4

 ASA III

31

20.3