From: The importance of rating scales in measuring patient-reported outcomes
Questionnaire (Question number) | Threshold values (All items) | Threshold values (After removing misfitting items) |
---|---|---|
IVI (1–19) | −1.45, −1.72, 0.03, 0.72, 2.43 | −1.50, −1.73, 0.03, 0.73, 2.48 |
ADVS (1bc–19bc except 6 and 7bc) | −0.94, −1.00, −0.20, 2.14 | −0.60, −1.21, −0.32, 2.13 |
HVAT (1ab to 10ab) | −0.52, 0.25, −0.04, −1.04, −0.36, 0.26, −0.12, −0.38, 1.96 | −0.83, 0.14, −0.17, −0.95, −0.61, 0.33, 0.06, −0.31, 2.35 |
NEIVFQ (20–25, A12, A13) | −0.07, −0.51, 0.26, 0.33 | –0.03, −0.70, 0.11, 0.62 |