Fig. 10From: Structural validity of the Boston Carpal Tunnel Questionnaire and its short version, the 6-Item CTS symptoms scale: a Rasch analysis one year after surgeryResponse category threshold map showing ordered thresholds after merging the response categories in items 4 (“How often do you have hand or wrist pain during daytime?”), 5 (“How long on average does an episode of pain last during the daytime?”), 7 (“Do you have weakness in your hand or wrist?”) and 11 (“Do you have difficulty with the grasping and use of small objects such as keys or pens?”) of the BCTQ Symptom Severity ScaleBack to article page