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Table 2 Malay SF-36: item percent missing, item means and standard deviations (SD)*

From: The Malay version of SF-36 health survey instrument: testing data quality, scaling assumptions, reliability and validity in post-coronary artery bypass grafting (CABG) surgery patients at the National Heart Institute (Institut Jantung Negara—IJN), Kuala Lumpur

Scale

SF-36 item

Code

% missing

Mean

SD

Physical Functioning (PF)

Q3. Vigorous activities

PF1

0

1.89

0.688

Q9. Moderate activities

PF2

0

2.24

0.712

Q6. Walking more than a kilometre

PF7

0

2.25

0.744

Q8. Climbing several flights of stairs

PF4

0

2.29

0.651

Q5. Bending, kneeling, stooping

PF6

0

2.35

0.723

Q4. Walking more than 100 m

PF8

0

2.36

0.692

Q10. Lifting or carrying groceries

PF3

0

2.37

0.683

Q7. Walking 100 m

PF9

0

2.49

0.700

Q11. Climbing one flight of stairs

PF5

0

2.53

0.656

Q12. Bathing or dressing

PF10

0

2.66

0.679

Role-Physical (RP)

Q14. Accomplished less than would like

RP2

0

1.52

0.500

Q16. Difficulty performing work/activities

RP4

0

1.52

0.500

Q13. Cut down time spent on work

RP1

0

1.56

0.497

Q15. Limited in kind of work/activities

RP3

0

1.59

0.492

Bodily Pain (BP)

Q21. Extent pain interfered with work

BP2

0

2.13

1.011

Q22. Intensity of bodily pain

BP1

0

2.72

1.234

General Health (GH)

Q1. My health is excellent

GH5

0

1.99

1.001

Q36. I seem as healthy as anyone I know

GH3

0

2.09

1.007

Q34. Rating of general health

GH1

0

2.75

0.847

Q33. I seem to get sick easier than others

GH2

0

3.59

1.291

Q35. I expect my health to get worse

GH4

0

4.09

1.078

Vitality (VT)

Q27. Full of life

VT1

0

2.41

1.240

Q23. Have a lot of energy

VT2

0

2.59

1.325

Q29. Feel tired

VT4

0

4.00

1.432

Q31. Feel worn out

VT3

0

4.76

1.441

Social Functioning (SF)

Q20. Extent health problems interfered

SF1

0

1.81

0.960

Q32. Frequency health problems interfered

SF2

0

3.92

0.987

Role-Emotional (RE)

Q18. Accomplished less than would like

RE2

0

1.69

0.462

Q17. Cut down time spent on work

RE1

0

1.73

0.444

Q19. Work not done as carefully as usual

RE3

0

1.83

0.372

Mental Health (MH)

Q26. Felt calm and peaceful

MH3

0

2.19

1.284

Q30. Been a happy person

MH5

0

2.19

1.314

Q24. Been a very nervous person

MH1

0

4.55

1.571

Q28. Felt down hearted and blue

MH4

0

4.91

1.491

Q25. Felt down in the dumps

MH2

0

5.27

1.291

Health Transition (HT)

Q2. Change in health from one year ago

HT

0

2.09

0.941

  1. *Items within a scale are ordered from lowest to highest according to their relative expected means