The Dutch version of the knee injury and osteoarthritis outcome score: A validation study

Table 1 Characteristics of the five patient groups

	Mild OA (n = 36)	Moderate OA (n = 62)	Severe OA (n = 47)	TKA (n = 63)	Revision of TKA (n = 54)
Age in years	36 (27–50)	56 (27–72)	65 (42–81)	61(42–78)	77 (36–89)
Gender, women %	22	32	52	51	78
VAS pain	0.7 (0.0–6.7)	3.9 (0.0–10.0)	6.1 (1.0–10.0)	1 (0.0–9.4)	5.0 (0–10)
KOOS
Pain	85.3 ± 18.5	62.9 ± 25.7	41.8 ± 18.9	70.1 ± 24.5	61.6 ± 23.4
Symptoms	78.6 ± 7.1	63.2 ± 24.4	46.4 ± 18.7	72.3 ± 18.5	64.7 ± 21.5
ADL	91.2 ± 15.1	69.3 ± 24.2	43.4 ± 19.4	72.8 ± 23.3	56.6 ± 21.9
Sport/recreation	71.0 ± 23.4	36.2 ± 32.0	29.1 ± 39.2	33.2 ± 24.1	26.8 ± 34.1
QoL	67.0 ± 21.6	44.6 ± 26.3	30.9 ± 25.5	52.2 ± 23.8	36.6 ± 26.6
SF-36
BP	84.7 ± 19.7	63.6 ± 24.0	34.6 ± 22.1	70.7 ± 24.9	55.4 ± 27.2
PF	86.4 ± 17.2	61.1 ± 24.8	34.9 ± 20.6	61.7 ± 23.9	32.9 ± 24.4
SF	92.4 ± 10.5	82.8 ± 21.9	61.7 ± 28.1	81.8 ± 28.6	64.1 ± 29.0
RF	77.8 ± 38.2	64.8 ± 39.7	26.6 ± 34.7	57.4 ± 43.7	31.0 ± 38.8
RE	91.7 ± 25.7	87.4 ± 28.5	57.4 ± 44.3	69.7 ± 43.6	59.9 ± 42.6
MH	86.8 ± 13.4	79.6 ± 19.2	69.1 ± 20.0	74.6 ± 21.7	70.3 ± 20.7
VT	75.4 ± 13.4	68.9 ± 19.3	53.9 ± 19.3	66.5 ± 21.8	55.5 ± 19.1
GH	84.0 ± 12.8	65.0 ± 20.8	60.2 ± 23.0	66.8 ± 24.1	51.4 ± 21.3

Results are presented as median (range) or mean ± SD. Abbreviations: OA; osteoarthritis, TKA; total knee arthroplasty, Revision of TKA; Revision of total knee arthroplasty; VAS, Visual Analogue Scale; BP, bodily pain; PF, physical function; SF, social function; RF, role limitations because of physical problems; RE, role limitations because of emotional problems; MH, mental health; VT, vitality; GH, general health perception; ADL, Activities of daily living; QoL, Quality of life.

ISSN: 1477-7525