Variables / outcomes

Variables	Measurement tool	Initial Questionnaire	Follow up Questionnaire
Patient ID (site, language, ID)		X	X
Date of completion of the questionnaire		X	X
Pain location All painful areas	Body map	X	X
Most painful area	Body map	X	X
Pain area(s) for which the patient has been referred to the clinic	Body map	X	X
Circumstances surrounding the onset of the pain for which the patient has been referred to the clinic		X
Duration of the pain for which the patient has been referred to the clinic		X
Frequency of the pain for which the patient has been referred to the clinic (continuous or intermittent)		X	X
Neuropathic component of the pain for which the patient has been referred to the clinic	Self-reported portion of the DN4	X	X
Presence of pain in the past 7 days		X	X
Worst pain intensity in the past 7 days	PROMIS 0-10 pain intensity scale (0 = no pain, 10 = worst imaginable pain)	X	X
Average pain intensity in the past 7 days	PROMIS 0-10 scale	X	X
Pain interference	Interference items of the Brief Pain Inventory	X	X
Physical functioning	Physical functioning subscale of the SF-12	X	X
Anxiety	Anxiety Subscale of the Patient Health Questionnaire – 4	X	X
Depression	Depression Subscale of the Patient Health Questionnaire – 4	X	X
Psychological distress	Patient Health Questionnaire – 4	X	X
Age		X
Biological sex at birth (female, male, intersex, prefer not to disclose the information)		X
Gender (woman, man, do not identify within the gender binary, prefer not to disclose the information)		X
Preferred gender pronoun (she/her, he/his, they/them, prefer to use another gender pronoun (specify)		X
Employment status		X	X
Canadian Armed Forces
Ever		X
Currently active		X	X
Year of release		X	X
Pain related to the work in the Canadian Armed Forces		X	X