Table 2.

Pain clinic definition typologies

General Category	Sub-Categories	Definition	Sources
Provider-based	Supervision-based	Who owns, manages or oversees the clinic	[16, 47]
	Composition-based	Combination of staff	[16, 47, 49, 62–64]
Outcome-based (Aim-based)		Outcome/goal distinct from chronic pain management for general population	[16, 47, 49, 61–63, 65–68]
Treatment-based	Single-modality pain clinic	Single approach to pain treatment	[16, 46, 49, 68, 69]
	Multidisciplinary	Multiple approaches to pain treatment	[16, 46, 47, 55, 67, 69–71]
	Interdisciplinary	Integrate multiple approaches to pain treatment through coordinated team	[53, 55, 68, 72]
Marketing-based		Advertise themselves as location where pain is managed	[58, 64, 73, 74]
Patient Case Mix		Ratio of pain management patients to providers	[47]