Table 4

Studies presenting prevalence estimates for CFS/ME from several case definitions applied on different populations (model C)

First author, year, countryCase definitionRecruitment strategy
Bazelmans, 1999,75 The NetherlandsAs recognized by GPQuestionnaire to all GPs, prevalence estimated to 0.11%
Lloyd, 1990,44 AustraliaAustralianRecruited through GP's covering 76 206 patients
Buchwald, 1995,76 USACDC-1988/HolmesPostal survey to 4000 randomly selected participants
Gunn, 1993,77 USACDC-1988/HolmesRecruited by contact with primary health care providers; prevalence in the range 0.002–0.007%
Price, 1992,78 USACDC-1988/HolmesInterview survey with 13 538 participants
Versluis, 1997,79 NetherlandsCDC-1988/Holmes23 000 patients in GP database
Bierl, 2004,80 USACDC-1994/FukudaRandom digit-dialling survey with 7317 respondent
Cho, 2009,81 UKCDC-1994/Fukuda2530 consecutive GP visitors
Cho, 2009,81 BrazilCDC-1994/Fukuda3921 consecutive GP visitors
Evengård, 2005,82 SwedenCDC-1994/FukudaPhone survey of 41 499 participants in a twin register
Hamagucchi, 2011,83 JapanCDC-1994/Fukuda3000 random participants in a health check programme
Jason, 1999,84 USACDC-1994/FukudaPhone survey with 18 675 respondents
Kim, 2005,85 South KoreaCDC-1994/Fukuda1962 consecutive GP visitors
Njoku, 2007,86 NigeriaCDC-1994/FukudaInterview survey with 1500 participants
Reeves, 2007,64 USACDC-1994/empiricalPhone survey with 10 837 responding households
Reyes, 2003,87 USACDC-1994/FukudaPhone survey with 33 997 responding households
Steele, 1998,88 USACDC-1994/FukudaPhone survey with 8004 responding households
van't Leven, 2009,89 The NetherlandsCDC-1994/FukudaPostal survey to 22 500 randomly selected participants
Vincent, 2012,90 USACDC-1994/FukudaRetrospective medical record review in Olmsted County; 183 841 residents
Yiu, 2005,91 ChinaCDC-1994/FukudaUnknown
Lawrie, 1995,58 UKOxfordPostal survey to 1039 randomly selected participants
Ho-Yen, 1991,92 UKPost viral exhaustion syndromePostal survey to 195 GPs; prevalence 0.13% (0.12% to 0.15%)
  • CFS, chronic fatigue syndrome; GP, general practitioner; ME, myalgic encephalomyelitis.