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. 2017 Feb 24;12(2):e0172804. doi: 10.1371/journal.pone.0172804

Table 1. Coding of the 15 different pain types.

The following questions are about pain you may have experienced in the past 3 months. Please refer to pain that lasted a whole day or more.
Question Response Item Code
During the past 3 months, did you have neck pain? Yes NECK3
During the past 3 months, did you have low back pain? Yes LBP3
Did this pain spread down either leg to areas below the knees? Yes LBP3R
During the past 3 months, did you have severe headaches or migraines? Yes HAM3
Have you had a problem with pain that lasted more 1 month, more than 3 months, or more than 1 year? Subjects who answer affirmative proceed to the following.
Regarding your pain problem, which regions are affected? Item Code
Head affected CPHEAD
Face/dental affected
Right shoulder girdle affected CPSHDR
Left shoulder girdle affected
Right upper arm affected CPARM
Left upper arm affected
Right mid-arm affected
Left mid-arm affected
Right lower arm affected
Left lower arm affected
Right upper back affected CPUBACK
Left upper back affected
Right lower back affected CPLBACK
Left lower back affected
Right buttock affected
Left buttock affected
Spine affected
Right upper leg affected CPLEG
Left upper leg affected
Right mid-leg affected
Left mid-leg affected
Right lower leg affected
Left lower leg affected
Neck affected CPNECK
Sternum affected CPCHEST
Right chest affected
Left chest affected
Abdomen affected CPABD
Right hand affected CPHAND
Left hand affected
Right foot affected CPFOOT