Compliance in Answering the PROM Questionnaires
PROM
In the intervention group, response rates to the PROM questionnaires were at 85.3% (1582 of 1854), 87.8% (1627 of 1854), and 86.1% (1597 of 1854) at intervention time points at 1, 3, and 6 months after surgery, respectively, for patients with hip replacement and 85.1% (1331 of 1564), 85.3% (1334 of 1564), and 84.5% (1322 of 1564) at 1, 3, and 6 months after surgery, respectively, for patients with knee replacement. At 12 months after surgery, after the intervention timeframe, compliance was 84.0% (1558 of 1854) in the hip replacement intervention group, 84.9% (1565 of 1843) in the hip replacement control group, 82.4% (1288 of 1564) in the knee replacement intervention group and 82.7% (1279 of 1546) in the knee replacement control group.