Table 1.

Demographic information on participants with concordant and discordant sex in the UK Biobank (n = 487,596)

	Chromosomal vs. reported sex concordant (N = ~487,400)	Chromosomal vs. reported sex discordant (N = ~200)
Chromosomal sex
XX chromosomal sex	264,300 (54.2%)	(27%)
XY chromosomal sex	223,100 (45.8%)	(73%)
Country of birth
Outside of the United Kingdom	39,700 (8.1%)	(11%)
The United Kingdom	447,700 (91.9%)	(89%)
Race/ethnicity-collapsed categories
Asian	11,800 (2.4%)	(2%)
Black	8,600 (1.8%)	(1%)
Mixed/other	5,400 (1.1%)	(1%)
White	459,300 (94.2%)	(96%)
Year of birth [year, (SD)]	1,951.5 (8.1)	1,953.8 (8.0)
Age at recruitment [years, (SD)]	56.5 (8.1)	54.3 (8.0)
High school equivalent
Yes	316,800 (65.0%)	(69%)
No	169,700 (34.8%)	(31%)