Table 3.

PASS Values for the IKDC Subjective Score and KOOS Subscales at 6 and 12 Months After PRP Injection Treatment ^a

	6 Months		12 Months
Outcome Measure	PASS Cutoff Score	Sensitivity; Specificity [Youden]	PASS Cutoff Score	Sensitivity; Specificity [Youden]
IKDC Subjective	59.7	0.712; 0.780 [0.491]	62.1	0.710; 0.830 [0.540]
KOOS Pain	73.6	0.744; 0.610 [0.354]	76.4	0.710; 0.660 [0.370]
KOOS Symptoms	71.2	0.731; 0.576 [0.307]	73.2	0.704; 0.623 [0.326]
KOOS ADL	84.5	0.712; 0.627 [0.339]	84.5	0.710; 0.660 [0.370]
KOOS Sport/Rec	47.5	0.724; 0.627 [0.351]	42.5	0.790; 0.509 [0.300]
KOOS QOL	47.0	0.718; 0.712 [0.430]	43.9	0.772; 0.585 [0.357]

^a ADL, Activities of Daily Living; IKDC, International Knee Documentation Committee; KOOS, Knee injury and Osteoarthritis Outcome Score; PASS, Patient Acceptable Symptom State; PRP, platelet-rich plasma; QOL, Quality of Life; Sport/Rec, Sport and Recreation.