Table 1.

Participant characteristics by FM status

Characteristic	FM (n = 172)	Controls (n = 63)
Age (years), mean (SD)	50 (10)	41 (10)
Female %	93	56
Married or living as married, %	57	32
Education, years, %
0 – 12	15	13
13 – 16	58	56
17 or more	27	31
Employed at least part time, %	29	73
Annual household income, %
$0 – 14,999	27	23
$15,000 – 24,999	13	21
$25,000 – 34,999	10	16
$35,000 – 49,999	15	7
$50,000 or more	35	32