Table 1.

Gail model risk scores and risk factors included in the Gail model

nMeanSD (range)
5-year Gail risk994.13%4.10 (1.8-13.7)
Lifetime Gail risk*9923.5%12.3 (4.5-56.7)
Current age (years)9951.58.5 (36-74)
Postmenopausal45 (50%)
Age at menarche (years)9912.31.5 (9-16)
Parity74 (75%)2.61.2 (1-5)
Age at first birth74 (75%)24.14.8 (16-35)
No. first-degree relatives with breast cancer76 (77%)1.41.5 (0.5-5)
Prior breast biopsies66 (67%)1.71.4 (1-10)
History of atypical hyperplasia19 (19%)
History of LCIS10 (10%)
  • * Population average = 12.5%.

  • Defined as continuous absence of menstruation for at least 12 months, or if status post-hysterectomy, with follicle-stimulating hormone level in the postmenopausal range.

  • Half-siblings were counted as 0.5.