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

Table 5 Malay SF36: descriptive statistics for the eight scales

Scale	Range	Median	Mean	SD	Skewness	% floor	% ceiling
PF	0–100	70.00	67.20	24.85	− 0.652	1.0	9.0
RP	0–100	50.00	54.86	40.39	− 0.166	24.0	34.6
BP	10–100	67.50	68.68	23.14	− 0.221	0.4	20.2
GH	0–100	70.00	69.27	19.31	− 0.470	0.0	4.1
VT	0–100	70.00	68.80	18.87	− 0.392	0.0	5.7
SF	0–100	75.00	76.38	20.80	− 0.683	0.0	26.1
RE	0–100	100.00	75.25	33.96	− 1.003	8.3	59.7
MH	8–100	80.00	77.39	18.68	− 0.666	0.0	15.9

Since the scores were negatively skewed, we have used the median and interquartile range (IQR) as descriptive statistics in this study
PF Physical Functioning, RP role limitations due to Physical Health, RE role limitations due to Emotional Problems, VT Vitality, MH Mental Health, SF Social Functioning, BP Bodily Pain, GH General Health

ISSN: 1477-7525