Table 1 Basic description of samples

From: Exploratory analysis of age and sex dependent DNA methylation patterns on the X-chromosome in whole blood samples

	Sample size			Age at blood sampling		Twin pair
	Male	Female	Total	Range	Mean	MZ	DZ	Total
Danish
MADT all	266	226	492	50–80	66	243	3	246
MADT used*	226	226	452	56–79	65	224	2	226
LSADT all	72	152	224	73–91	79	101	11	112
LSADT used	72	72	144	74–88	79	67	5	72
Scottish
LBC1921 all	286	190	476	78–95	79
LBC1921 used	190	190	380	78–91	82

*The subsets were extracted based on their ranked distance to the opposite sex’s mean (i.e. the females of the MADT was taken based on the males of MADT in the order where the ones with ages closest to the male mean age were subtracted first)

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ISSN: 1756-994X

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