Use of medications by people with chronic fatigue syndrome and healthy persons: a population-based study of fatiguing illness in Georgia.

Despite the age-matching of CFS cases and Well controls, birth control drugs were used less frequently by the CFS group (6.5% of females with CFS compared to 11.8% of the Well females and 9.9% of females with ISF) while hormone replacement use was greater among females with CFS (20.7%) than in the ISF (13.9%) or Well groups (14%) but these differences did not reach statistical significance.

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