Fig. 1From: Association of Catechol-O-methyltransferase single nucleotide polymorphisms, ethnicity, and sex in a large cohort of fibromyalgia patientsDistribution of FM diagnosis by (a) age, (b) sex, and (c) ethnicity. Those diagnosed with FM were more likely to be in the middle age tertile (49–63), female, and African-American compared to the non-FM group. Adjusted odds ratios associated with each specific demographic is shown in Table 1Back to article page