Table 1.

Comparison of age groups at ME/CFS onset and at diagnosis (N = 155).

Age category	ME/CFS onset	ME/CFS diagnosis
6–12 years	5 (3.2)	0 (0.0)
13–18 years	19 (12.3)	8 (5.2)
19–24 years	21 (13.6)	12 (7.7)
25–44 years	89 (57.8)	80 (51.6)
45–64 years	19 (12.3)	53 (34.2)
≥65 years	2 (1.3)	2 (1.3)