Table 1.

Summary details of the studies included in this meta-analysis [35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46]

Author	Detection method	Sample size	HHV-6+/CFS+	HHV-6 +/CFS–	HHV-6–/CFS+	HHV-6–/CFS–	Odds ratio	Quality assessment
Ablashi et al. [35]	Serology	60	32	4	3	21	56	****/*'/**
Blomberg et al. [36]	Serology	141	54	54	11	22	2	****/*/***
Burbelo et al. [37]	Serology	131	61	53	11	6	0.69	****/**/***
Cameron et al. [10]	PCR	20	2	1	8	9	2.25	**/**/***
Di Luca et al. [38]	PCR	60	16	7	20	17	1.94	****/*/***
Enbom et al. [39]	PCR	15	2	2	6	5	0.83	***/*/**
Knox and Carrigan [40]	PCR	117	11	0	38	68	40.92	****/*/**
Knox and Carrigan [40]	Serology	25	4	56	51	136	5–69	****/*/**
Nicolson et al. [30]	PCR	300	61	9	139	91	4.44	****/**/**
Oakes et al. [41]	PCR	48	16	4	23	5	0.87	****/**/**
Patnaik et al. [31]	Serology	319	93	7	61	145	31.58	****/*/**
Reeves et al. [42]	PCR	76	7	14	19	36	0.95	****/*/**
Shikova et al. [43]	PCR	108	48	41	10	9	1.05	****/*/**
Wallace et al. [44]	PCR	145	26	19	48	52	1.48	****/*/**
Yalcin et al. [45]	Serology	26	5	2	8	11	3.44	****/*/**
Yalcin et al. [22]	PCR	26	7	0	6	13	31.15	****/*/**
Zorzenon et al. [46]	PCR	103	30	6	22	45	10.23	****/*/**