Table 4

Adjusted ORs for the association of breast cancer risk with well-done meat intake stratified by NAT2 genotype

NAT2 (slow)NAT2 (rapid/intermediate)
Cases/ controlsOR (95% CI)aCases/ controlsOR (95% CI)a
Meat doneness score
3 and 424 /711.0 (reference)13 /651.0 (reference)
520 /511.2 (0.6–2.3)25 /393.2 (1.5–7.0)
626 /263.0 (1.4–6.1)17 /283.0 (1.3–7.0)
75 /330.4 (0.2–1.3)12 /193.0 (1.2–7.7)
83 /42.2 (0.5–10.8)4 /54.0 (0.9–17.0)
94 /33.9 (0.8–18.9)3 /27.6 (1.1–50.4)
Trend testP = 0.22P = 0.003
Test for interactionP = 0.06
Red meat intakeb
T1 (low)27 /641.0 (reference)19 /521.0 (reference)
T236 /711.2 (0.7–2.2)28 /611.3 (0.6–2.5)
T329 /760.9 (0.5–1.7)35 /601.7 (0.9–3.4)
Trend testP = 0.30P = 0.11
Test for interactionP = 0.91
  • a Adjusted for age.

  • b By tertile.