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Table 1 Demographics of study participants and US populations from the 1000 Genomes Project

From: Association of Catechol-O-methyltransferase single nucleotide polymorphisms, ethnicity, and sex in a large cohort of fibromyalgia patients

Group Mean Age Ethnicity n (% Total) % Females
Fibromyalgia (FM) 54.9 All: 2713 (100%) 72%a
African-American: 380 (14%)b 71%
Caucasian: 1779 (66%)b 71%
Hispanic: 130 (4.8%) 71%
Other: 34 (1.3%) 65%
Non-Fibromyalgia (Non-FM) 55.7 All: 32,141 (100%) 59%
African-American: 2863 (8.9%)b 65%
Caucasian: 21,807 (68%)b 58%
Hispanic: 2515 (7.8%) 57%
Other: 2028 (6.3%) 60%
1000 Genomes (US populations) N/A All: 224 (100%) 52%
African-American: 61 (27%) 57%
Caucasian: 99 (44%) 51%
Hispanic: 64 (29%) 50%
  1. a% Females in FM is significantly increased as compared to % females in the Non-FM group (p = 1.17 × 10− 30)
  2. b% African-Americans is significantly increased as compared to % of Caucasians in the Non-FM group (p = 3.11 × 10− 12)