Demographic information of MFS individuals who are currently using opioids versus those who are not current using opioids.

Table 4: Demographic information of MFS individuals who are currently using opioids versus those who are not current using opioids.

Group	Not Currently Using Opioids	Currently Using Opioids	p
(N) %	66% (144)	34% (74)
Female %	73% (103)	78% (58)	0.41
Age in years, mean range	35-44	35-44	0.02^*
White %	91% (131)	93% (69)	0.8
Unemployed %	42% (60)	57% (42)	0.045^*
Average years since diagnosis ± sd	19.8 ą 16.2	20.8 ą 14.7	0.65
Average number of MFS symptoms ± sd	11.3 ± 5.4	14.3 ± 4.8	< 0.001^**
Average number of sites of pain ± sd	1.9 ± 1.4	3.1 ± 1.9	< 0.001^**

N = Number; SD = Standard Deviation. ^*p ≤ 0.05; ^**p < 0.001.