Table 1.

List of structured questionnaires to measure comorbidities

Section	Questionnaire	Description	Score range
Physical activity	International physical activity questionnaire [23]	Self-reported physical activity level	1–3
	Tampa Scale of Kinesiophobia for Temporomandibular Disorders (TSK-TMD) [24]	Fear of movement and activity	18–72
General health	Short Form 36 (SF-36) [25]	Difficulties in various activities	0–100
	Composite Autonomic Symptom Score 31 (COMPASS 31) [26]	Autonomic symptoms	0-100
	Short form McGill Pain Questionnaire (MPQ) [27]	Quality and intensity of pain	0–45
Sleep disturbance and fatigue	Pittsburgh Sleep Quality Index (PSQI) [28]	Quality of sleep	0–21
	Epworth Sleepiness Scale (ESS) [29]	Daytime sleepiness	0–24
	Fatigue Assessment Instrument (FAI) [30]	Fatigue and related medical disorders	1–7
	Insomnia Severity Index (ISI) [31]	Severity of insomnia	0–28
	Morningness-eveningness questionnaire (MEQ) [32]	Preference of when to start sleep or wake up	16–86
Widespread pain	Symptom Severity (SS) scale	Widespread body pain and centralized pain characteristics	0–12/0–19
	Widespread Pain Index (WPI) [33]
	Fibromyalgia Impact Questionnaire (FIQ) [34]	Pain and functional impact of fibromyalgia	0-100
Psychologic disturbance	Symptom Checklist-90-Revised (SCL-90-R) [35]	Psychological problems
	Beck Depression Index (BDI) [36]	Emotional and behavioral depression	0–63
	Beck Anxiety Index (BAI) [37]	Emotional and physical anxiety	0–63
	Pain Catastrophizing Scale (PCS) [38]	Negative thoughts and emotions about pain	0–52
	Central Sensitization Inventory (CSI) [39]	Symptoms related to central sensitization	0-100
	Pennebaker Index of Limbic Languidness (PILL) [40]	Tendency to notice physical symptoms and sensations	0-216
	Perceived Stress Scale (PSS) [41]	Nonspecific perceived stress	0–40