The Application of Gail Model to Predict the Risk of Developing Breast Cancer among Jordanian Women

Table 2

Characteristics of high- and low-risk patients according to the modified Gail model (age: 35–59.9 years)

Variable	High-risk group (modified Gail score >0.65) (N = 210)			Low-risk group (modified Gail score ≤0.65) (N = 1003)
	N	Mean	95% CI	N	Mean	95% CI
Estimated risk for developing invasive breast cancer:
(i) Over the next 5 years	210	1.08	(1.01, 1.15)	970	0.42	(0.41, 0.43)
(ii) Over lifetime (age 90)	210	5.9	(5.48, 6.33)	970	2.9	(2.8, 2.94)
Age	210	49.7	(48.9, 50.5)	1003	46.6	(46.1, 47.0)
Age at first pregnancy	163	27.2	(26.3, 28.1)	454	22.1	(21.7, 22.5)
Age at menarche	168	13.1	(12.9, 13.3)	711	13.1	(13.0, 13.2)
	N	Count (%)		N	Count (%)
First-degree family with breast cancer	210	120 (57.1%)		1003	23 (2.3%)
Prior breast biopsy	210	21 (10.0%)		975	14 (1.4%)