Table A1.

Sex Differences in Associations between Educational Attainment and Standardized TL

Sample	Sibling	Sibling
Fixed-Effects	Family	Family
	(1)	(2)
Age	−0.037***	−0.037***
	(0.002)	(0.002)
Female	0.131***	0.200***
	(0.040)	(0.033)
Years of Education	−0.003
	(0.002)
Years of Education * Female	0.003
	(0.003)
No qualification		REF
GCSEs or equivalent		0.084**
		(0.034)
A/AS level or equivalent		0.089**
		(0.045)
NVQ/HNC or equivalent		0.113**
		(0.056)
Other professional qualification		0.030
		(0.041)
College degree		0.008
		(0.036)
No qualification*Female		REF
GCSEs*Female		−0.063
		(0.042)
A/AS level*Female		−0.059
		(0.054)
NVQ/HNC*Female		−0.073
		(0.069)
Other professional qualification*Female		−0.038
		(0.058)
College degree*Female		0.016
		(0.041)
TL PGS	0.064***	0.064***
	(0.010)	(0.010)
Education PGS	0.003	0.002
	(0.010)	(0.010)
N	30,702	30,702

Notes: All regressions additionally control for the first 20 genetic principal components. Standard errors clustered at the family level. ***significant at 1% **significant at 5% *significant at 10%. REF: reference category.