Inter-rater agreement and reliability of the COSMIN (COnsensus-based Standards for the selection of health status Measurement Instruments) Checklist per Mokkink, L, Terwee, C, Gibbons, E, Stratford, P, Alonso, J, Patrick, D, Knol, D, Bouter, L, De Vet, H

The COMET Handbook: version 1.0. per Williamson, P, Altman, D, Bagley, H, Barnes, K, Blazeby, J, Brookes, S, Clarke, M, Gargon, E, Gorst, S, Harman, N, Kirkham, J, McNair, A, Prinsen, C, Schmitt, J, Terwee, C, Young, B

The case for an international patient-reported outcomes measurement information system (PROMIS®) initiative. per Alonso, J, Bartlett, S, Rose, M, Aaronson, N, Chaplin, J, Efficace, F, Leplège, A, Lu, A, Tulsky, D, Raat, H, Ravens-Sieberer, U, Revicki, D, Terwee, C, Valderas, J, Cella, D, Forrest, C

The Omeract-Oarsi core set of outcome domains to measure in clinical trials for people with hip and/or knee osteoarthritis per Smith, T, Hawker, G, Hunter, D, March, L, Shea, B, Christensen, R, Guillemin, F, Terwee, C, Williamson, P, Roos, E, Loeser, R, Schnitzer, T, Kloppenburg, M, Neogi, T, Ladel, C, Kaiser, U, Mobasheri, A, Arden, N, Hochberg, M, Tennant, A, De Wit, M, Tugwell, P, Conaghan, P

Uptake of the OMERACT-OARSI hip and knee osteoarthritis core outcome set: review of randomised controlled trials from 1997 to 2017 per Smith, T, Mansfield, M, Hawker, G, Hunter, D, March, L, Boers, M, Shea, B, Christensen, R, Guillemin, F, Terwee, C, Williamson, P, Roos, E, Loeser, R, Schnitzer, T, Kloppenburg, M, Neogi, T, Ladel, C, Kalsi, G, Kaiser, U, Buttel, T, Ashford, A, Mobasheri, A, Arden, N, Tennant, A, Hochberg, M, De Wit, M, Tugwell, P, Conaghan, P