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Table 1 Internal consistency of Fibromyalgia Survey Questionnaire (Brazil): telephone interview and self-administration

From: Validity of fibromyalgia survey questionnaire (2016) assessed by telephone interview and cross-cultural adaptation to Brazilian Portuguese language

  FSQ-Brazil (telephone) FSQ-Brazil (self-administration)
Cronbach’s α Cronbach’s α
WPI and SSS 0.73 0.74
WPI and FSS 0.94 0.94
SSS and FSS 0.75 0.76
  1. FSQ Fibromyalgia Survey Questionnaire, WPI widespread pain index, SSS symptom severity scale, FSS fibromyalgia severity scale