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Table 1 Description of the TwinsUK discovery sample

From: Heritable components of the human fecal microbiome are associated with visceral fat

  Full dataseta Microbiome subsetb
No. of samples 3666 1313
 Sex   
 Female 3296 1266
 Male 370 47
 Zygosity   
 MZ 2088 496
 DZ 1578 594
 Unrelated 0 223
Age (mean (range)) 63 (32–87) 63 (32–87)
BMI (mean (range)) 26.1 (15.7–49.9) 26.1 (16.2–45.9)
 Ethnicity   
 European 3511 1295
 Other 102 9
 Unknown 53 8
  1. aSummaries are shown for both the extended dataset of 3666 twins used in the phenotype heritability analyses and for the microbiome sample subset of 1313 individuals. bAdditional file 1: Table S7 includes extended descriptions of the microbiome data subset