Equivalence of online and clinician administration of a patellar tendinopathy risk factor and severity questionnaire

TY - JOUR

T1 - Equivalence of online and clinician administration of a patellar tendinopathy risk factor and severity questionnaire

AU - Morton, S

AU - Morrissey, D

AU - Valle, X

AU - Chan, O

AU - Langberg, Henning

AU - Malliaras, P

N1 - © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

PY - 2015/10/1

Y1 - 2015/10/1

N2 - The VISA-P is a questionnaire for assessing the severity of patellar tendinopathy (PT). Our study aim was to evaluate the equivalence of self-administration of the VISA-P online with the addition of risk factor questions to develop a tool suitable for high-volume remote use. A crossover study design with 107 subjects was used to determine equivalence between online and clinician administration. Three population groups were used to ensure construct validity. Online vs clinician administration revealed an intraclass correlation (ICC) of 0.79 [confidence interval (CI): 0.68-0.86] for the VISA-P with a systematic significant difference of 4.99, which is not clinically meaningful. Poor ICCs were seen for questions 7 and 8 of the VISA-P (0.37 and 0.47, respectively) in comparison with earlier questions. There were statistically significant differences between population groups for the VISA-P. The ICC for risk factor questions was excellent at 0.89 (CI: 0.84-0.93) with no mean difference (P = 1.00). The online questionnaire enables equivalent collection of VISA-P data and risk factor information and may well improve further with the suggested modifications to the instructions for questions 7 and 8. There is potential to use this questionnaire electronically to generate large databases in future research.

AB - The VISA-P is a questionnaire for assessing the severity of patellar tendinopathy (PT). Our study aim was to evaluate the equivalence of self-administration of the VISA-P online with the addition of risk factor questions to develop a tool suitable for high-volume remote use. A crossover study design with 107 subjects was used to determine equivalence between online and clinician administration. Three population groups were used to ensure construct validity. Online vs clinician administration revealed an intraclass correlation (ICC) of 0.79 [confidence interval (CI): 0.68-0.86] for the VISA-P with a systematic significant difference of 4.99, which is not clinically meaningful. Poor ICCs were seen for questions 7 and 8 of the VISA-P (0.37 and 0.47, respectively) in comparison with earlier questions. There were statistically significant differences between population groups for the VISA-P. The ICC for risk factor questions was excellent at 0.89 (CI: 0.84-0.93) with no mean difference (P = 1.00). The online questionnaire enables equivalent collection of VISA-P data and risk factor information and may well improve further with the suggested modifications to the instructions for questions 7 and 8. There is potential to use this questionnaire electronically to generate large databases in future research.

U2 - 10.1111/sms.12334

DO - 10.1111/sms.12334

M3 - Journal article

C2 - 25418455

SN - 0905-7188

VL - 25

SP - 670

EP - 677

JO - Scandinavian Journal of Medicine & Science in Sports

JF - Scandinavian Journal of Medicine & Science in Sports

IS - 5

ER -