Table 3.

Estimated thresholds for patient acceptable symptom state (PASS) using 2 different methods, predictive modeling, and receiver operating characteristics (ROC) curve analyses, and 3 different anchor questions. Values in parentheses are 95% CI

Factor	Satisfied patients	Satisfied patients with no or mild knee difficulties	Satisfied patients with no knee difficulties
PASS predictive	20 (10–29)	38 (32–43)	64 (55–74)
PASS ROC	31 (2–39)	40 (31–47)	76 (39–80)
AUC	0.82 (0.71–0.93)	0.87 (0.80–0.94)	0.88 (0.80–0.96)
SNS/SPC (%)	63/89	78/89	74/92

Area under the curve (AUC), sensitivity (SNS), and specificity (SPC) are given as measurements of separability.