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Response rates (%) of PROs collection: minimal effort versus maximal effort. Represented for all surgical procedures (a) and the THA (b), TKA&UKA (c) and ACLR (d) subgroups. The line represents the response rate at all three time points. Note: PROs indicates patient-reported outcomes. THA indicates total hip arthroplasty. TKA indicates total knee arthroplasty. UKA indicates unicompartimental knee arthroplasty. ACLR indicates anterior cruciate ligament reconstruction
