Dutch version of the Victorian Institute of Sports Assessment-Achilles questionnaire for Achilles tendinopathy: Reliability, validity and applicability to non-athletes

doi:10.5312/wjo.v9.i1.1

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World Journal of Orthopedics

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2218-5836

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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World J Orthop. Jan 18, 2018; 9(1): 1-6
Published online Jan 18, 2018. doi: 10.5312/wjo.v9.i1.1

Table 1 The ICC_agreement and Cronbach’s alpha of the questionnaire

	Athletes (n = 39)	Non-athletes (n = 13)	Total (n = 52)
ICC_{VISA total} (95%CI)	0.95 (0.91-0.97)	-	0.97 (0.95-0.98)
ICC_{VISA modified} (95%CI)	0.96 (0.92-0.98)	0.98 (0.93-0.99)	0.97 (0.95-0.98)
SEM_{VISA total}	4.41 (4.4%)	-	4.07 (4.1%)
SEM_{VISA modified}	2.64 (4.4%)	2.42 (4.0%)	2.68 (4.5%)
SDC_{VISA total}	12.21 (12.2%)	-	11.28 (11.3%)
SDC_{VISA modified}	7.32 (12.2%)	6.70 (11.2%)	7.44 (12.4%)
Cronbach’s alpha_{VISA total}	0.72	0.82	0.78
Cronbach’s alpha_{VISA modified}	0.83	0.86	0.86

ICC: Intra-class correlation coefficient; SEM: Standard error of measurement; SDC: Smallest detectable change.

Table 2 Pearson correlation coefficients of the Victorian Institute of Sports Assessment-Achilles-NL with the other questionnaires (with and without activity domain)

	VISA-A_Total	VISA-A_Modified	VISA-A_Modified	VISA-A_Total	VISA-A_Modified
	Athletes (n = 71)	Athletes (n = 71)	Non-athletes (n = 22)	Entire population (n = 93)	Entire population (n = 93)
VAS pain	-0.54^a	-0.58^a	-0.39	-0.54^a	-0.57^a
VAS function	0.52^a	0.51^a	0.44^a	0.50^a	0.52^a
AOFAS	0.48^a	0.46^a	0.31	0.56^a	0.50^a
FAOS symptoms	0.45^a	0.52^a	0.53^a	0.58^a	0.60^a
FAOS pain	0.53^a	0.56^a	0.52^a	0.58^a	0.60^a
FAOS ADL	0.56^a	0.55^a	0.47^a	0.59^a	0.58^a
FAOS sport	0.56^a	0.61^a	0.43^a	0.55^a	0.59^a
FAOS QOL	0.29^a	0.33^a	0.14	0.38^a	0.37^a
SF-36 physical functioning	0.55^a	0.63^a	0.66^a	0.70^a	0.71^a
SF-36 role physical	0.13	0.12	0.58^a	0.31^a	0.32^a
SF-36 bodily pain	0.31	0.40^a	0.46^a	0.49^a	0.51^a
SF-36 social functioning	0.01	-0.04	0.29	0.27^a	0.21
SF-36 mental health	-0.11	-0.07	0.39	0.21	0.20
SF-36 role emotional	-0.06	0.02	0.65^a	0.37^a	0.39^a
SF-36 vitality	-0.26	-0.25	0.26	-0.05	-0.09
SF-36 general health perception	-0.01	-0.02	0.28	0.25^a	0.21
SF-36 physical component scale	0.43^a	0.47^a	0.36	0.52^a	0.51^a
SF-36 mental component scale	-0.34^a	-0.32^a	0.49^a	0.04	0.03

^aP < 0.05. VISA-A: Victorian Institute of Sports Assessment-Achilles; VAS: Visual analogue scale; AOFAS: American Orthopaedic Foot and Ankle Society; FAOS: Foot and ankle outcome score; SF-36: Short form-36.

Citation: Sierevelt I, van Sterkenburg M, Tol H, van Dalen B, van Dijk N, Haverkamp D. Dutch version of the Victorian Institute of Sports Assessment-Achilles questionnaire for Achilles tendinopathy: Reliability, validity and applicability to non-athletes. World J Orthop 2018; 9(1): 1-6
URL: https://www.wjgnet.com/2218-5836/full/v9/i1/1.htm
DOI: https://dx.doi.org/10.5312/wjo.v9.i1.1