Table 2.

Characteristics of the included studies reporting the incidence of ME/CFS in European countries.

Reference	Follow-up, Procedure	Settings, Country	Sample, Total (Women, %)	Age Range	Case Definition	Incidence Estimate	Incidence Estimate by Gender
Nacul et al., [26]	12 months, Electronic search (GPs databases), queries to GPs, clinical review of cases	Primary care, The United Kingdom	143,153 (51%)	Adults, 18 to 64 years old	CDC−1994 CCC−2003	15 new cases per 100,000 adults per year 5 new cases per 100,000 adults per year	Women = 23 new cases per 100,000 adults per year Men = 7 new cases per 100,000 adults per year Women = 6 new cases per 100,000 adults per year Men = 3 new cases per 100,000 adults per year
Rimes et al., [27]	4 to 6 months, random selection from the Child Benefit Register	Community, The United Kingdom	842 (not reported)	Adolescents, 11 to 15 years old	CDC−1994	5 new cases per 1000 adolescents per 6 months	Not reported

Notes. Figures are presented as accurate (i.e., number of decimals) as reported in the original publication. CCC, Canadian Consensus Criteria; CDC, Centers for Disease Control and Prevention; GP, General Practitioners.