Table II:

The mean scores, standard deviations, score ranges and the number (%) of subjects reporting worst possible score (floor effect) and best possible score (ceiling effect) for the Malay version KOOS (n = 226)

	Mean	SD	Range	Floor effect	Ceiling effect
				n (%)	n (%)
KOOS Symptoms	12	5.8	0-30	2 (0.9)	0 (0)
KOOS Pain	12	6.4	2-36	0 (0)	0 (0)
KOOS ADL	18	11.5	2-55	0 (0)	0 (0)
KOOS Sport/ Recreation	15	7.7	0-36	2 (0.9)	0 (0)
KOOS QOL	17	6.7	0-33	2 (0.9)	0 (0)