Incidence rate radios of breast cancer classifications (per 10 µg dietary cadmium intake/day).

Abbreviations: IRR, incidence rate ratio; CI, confidence interval. aIn each analyses, we excluded those with no information on the classification under study (ER status, PGR status or histology). For the histology analyses we also excluded those being characterised with other histology types than ductal and lobular. bAdjusted for educational level (<8 y; 8–10 y; >10 y), smoking status (never; former; current), number of births (0; 1–2; 3–8), age at first birth (years, continuous), HRT status (never; former; current), HRT use (years, continuous), age at menarche (years, continuous), BMI (continuous), height (cm, continuous), physical activity (MET score, continuous) and alcohol intake (yes/no and g/day, continuous). Adjusted model results are shown.