Fig. 4From: Validity of the French version of Catquest-9SF and use of an electronic notepad for entering patient-reported outcome measuresPerson-item map for preoperative data. Items to the right, 2 or 3 signifies the 9 items, and persons to the left, # signifies 6 persons. M stands for mean value, S for 1 standard deviation and T for 2 standard deviationsBack to article page