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Table 2 Prevalence of migraine, fibromyalgia, and depression, IBS and non-IBS cohorts, January 1996 through June 2002

From: Migraine, fibromyalgia, and depression among people with IBS: a prevalence study

  IBS cohort (n = 97,593) Non-IBS cohort (n = 27,402)   
  Cases Prevalence per 1,000 Cases Prevalence per 1,000 Pooled Prevalence Difference* (95% CI)
Migraine 5,890 60 611 22 5 (3 – 7)
Fibromyalgia 12,563 129 1,297 47 28 (25 – 31)
Depression 12,533 128 1,644 60 16 (13 – 20)
Any of the above 25,783 264 3,226 118 46 (42 – 51)
Depression and Fibromyalgia 2,149 22 146 5 2 (1.5 – 3)
Migraine and Fibromyalgia 1,032 11 66 2 1 (-0.2 – 2)
Depression and Migraine 924 10 74 3 0 (-0.2 – 0.3)
Depression, Migraine, and Fibromyalgia 549 6 20 1 0 (-0.5 – 1)
  1. *Prevalence difference adjusted for categories of sex and quintile of mean medical costs per person-month of health plan enrollment.