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Table 2 Breast cancer risk factors, and associated regression coefficients ( β ), used in developing the alternative Gail-based models

From: Assessing risk of breast cancer in an ethnically South-East Asia population (results of a multiple ethnic groups study)

Risk factor Categories   BCDDP   GAIL-SBSP GAIL-SBSP (FULL) S-GAIL-SBSP E-GAIL-SBSP
   Code β Code β β(CI) β(CI) β(CI)
Main effects         
AGECAT (y) <50 0 0.01081 0 0.01081 0.807
  ≥50 1   1   (–0.73 to 2.35)   
AGEMEN (y) ≥14 0 0.09401 0 0.09401 0.240 0.238 0.204
  12–13 1   1   (0.05 to 0.43) (0.05 to 0.43) (0.01 to 0.39)
  <12 2   2     
AGEFLB (y) <20 0 0.21863 0 0.21863 0.185 0.183 0.170
  20–24 1   1   (0.016 to 0.31) (0.06 to 0.31) (0.03 to 0.31)
  25–29 or nulliparous 2   2     
  ≥30 3   3     
NUMREL 0 0 0.95830 0 0.95830 0.844 0.777 0.774
  1 1   1   (–0.17 to 1.86) (0.30 to 1.26) (0.29 to 1.26)
  ≥2 2   2     
NBIOPS 0 0 0.52926 0 0.52926 −15.877
  1 1   1   (–16.28 to –15.47)   
  ≥2 2   1     
ATYPICAL No 0 0.57405* 99
  Yes 1   99     
BMI (kg/m2) < 23.0 0 0.380
  23.0 – 27.4    1     (0.22 to 0.54)
  ≥ 27.5    2     
PARITY ≥ 3 0 0.203
  1 – 2    1     (0.03 to 0.38)
  0    2     
Interaction terms         
NBIOPS x AGECAT    −0.28804   −0.28804 16.138
       (Not estimatable)   
AGEFLB x NUMREL    −0.19081   −0.19081 −0.059
       (–0.61 to 0.50)   
  1. * Given by Novotny et al (2006, Table 2) [6].