Table 1.

High item-item correlation pairs (Pearson’s correlations; N = 83)

Question text		r
I-1: Do your toes begin to hurt when the ambient temperature or your body temperature rises?	I-2: Do your fingers begin to hurt when the ambient temperature or your body temperature rises?	0.911
I-3: Do you feel pain in your elbows when the ambient temperature or your body temperature rises?	I-4: Do you feel pain in your knees when the ambient temperature or your body temperature rises?	0.809
I-1: Do your toes begin to hurt when the ambient temperature or your body temperature rises?	I-5: Are you unable to exercise due to pain?	0.801
I-2: Do your fingers begin to hurt when the ambient temperature or your body temperature rises?	I-6: Are you unable to perform your daily activities due to pain?	0.803
I-5: Are you unable to exercise due to pain?	I-6: Are you unable to perform your daily activities due to pain?	0.815
I-7: Do your hands begin to hurt on cold days?	I-8: Do your feet begin to hurt on cold days?	0.865
I-10: Do you sweat on hot days?	I-11: Do you sweat while exercising?	0.952
V-1: Do you feel that the Fabry disease symptoms impact your work or schooling?	V-3: Do you feel that working outside is difficult?	0.800
VI-9: Do you feel sorry that your child(ren) is/are suffering from the symptoms of Fabry disease?	VI-10: Do you feel sorry that your child(ren) is/are suffering because they have Fabry disease?	0.882