Table 2

Descriptive analysis 161-SNP PRS

Group	Mean sPRS	SD sPRS	SE sPRS	n	95% CI
Group	Mean sPRS	SD sPRS	SE sPRS	n	Lower limit	Upper limit
Family breast cancer cases	0.70	0.90	0.05	323	0.60	0.80
1 breast tumour	0.66	0.89	0.05	267	0.55	0.76
2 breast tumours	0.89	0.93	0.12	56	0.65	1.13
Unaffected relatives	0.53	0.95	0.06	262	0.41	0.64
ORIGO cases	0.35	0.92	0.05	357	0.26	0.45
Population controls	0.00	1.00	0.06	327	−0.11	0.11

PRS, polygenic risk score; SNP, single nucleotide polymorphism; sPRS, standardised PRS.