Table 2.

The estimated PASS cutoff values at 3 months’ followup for different PROM assessing physical function.

PROMPASS Value at 3 Months (95% CI)
KOOS-PS
Range 0–2819.5 (18.0–20.7)
Range 0–10052.8 (48.5–56.8)
LEFS
Range 0–8037.0 (35.2–40.0)
Range 0–10053.8 (50.0–56.1)
LAI
Range 0–2411.5 (10.5–13.0)
Range 0–10047.9 (43.8–54.2)
WOMAC-PF
Range 0–6834.0 (31.0–38.0)
Range 0–10050.0 (45.6–55.9)
NRS function
Range 0–106.0 (5.0–6.0)
Range 0–10060.0 (50.0–60.0)
  • All PROM present scores with higher scores defining a higher level of disability with the exception of the nonstandardized LEFS score range, where higher scores define higher level of functioning. PASS: Patient Acceptable Symptom State; PROM: patient-reported outcome measure; WOMAC-PF: Western Ontario and McMaster Universities Osteoarthritis Index physical function subscale; LAI: Lequesne Algofunctional Index; LEFS: Lower Extremity Functional Scale; KOOS-PS: Knee Injury and Osteoarthritis Outcome Score, short version; NRS: numerical rating scale.