Table 5.

Questionnaires and outcome types used in the studies selected

Type of outcome	Questionnaires
Pain (p)	McGill Pain Questionnaire [48]
	Brief Pain Inventory [49]
	Visual Analogue Scale [50]
Quality of life (ql)	SF-36 [51]
	Quality of Life Scale (QOLS) [52]
Anxiety and depression (ad)	Beck Depression Inventory [53]
	Hospital Anxiety and Depression Scale [54]
	Hamilton Depression Scale [55]
	State-trait Anxiety Inventory [56]
Insomnia (i)	Visual Analog Scale [50]
	Patient Global Impression [57]
Tender points (tp)	Tender Points Index [58]
	Number of Tender Points according to American College of Rheumatology criteria [1]
Fatigue (f)	Visual Analog Scale [50]
	Multi-dimensional Assessment of Fatigue [59]
Global Function (gf)	Visual Analog Scale [50]
	Fibromyalgia Impact Questionnaire [60]
	Clinical Global Impression of Severity [57]
	Sickness Impact Profile (SIP) [61]