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Table 3 Association between breast cancer and exposure variables from Copenhagen mammography register and Copenhagen school health records registry in 13,572 women

From: Birth weight, childhood body mass index, and height in relation to mammographic density and breast cancer: a register-based cohort study

  Model 1 Model 2 Model 3
  Crudeamodel HR (95% CI) Adjustedbmodel HR (95% CI) Adjustedcmodel HR (95% CI)
Fatty breast 1.00 1.00 -
Mixed/dense breast 2.26 (1.90-2.68) 2.34 (1.97-2.78) -
Birth weight (g) 0.90 (0.75-1.07)a 0.89 (0.75-1.06) 0.88 (0.74-1.05)
BMI (kg/m2) age 7 0.91 (0.84-1.00) 0.91 (0.83-0.99) 0.97 (0.88-1.06)
BMI (kg/m2) age 8 0.94 (0.86-1.03) 0.94 (0.86-1.02) 1.01 (0.92-1.11)
BMI (kg/m2) age 9 0.91 (0.83-1.00) 0.91 (0.83-1.00) 0.99 (0.90-1.09)
BMI (kg/m2) age 10 0.92 (0.84-1.01) 0.92 (0.83-1.01) 1.01 (0.92-1.10)
BMI (kg/m2) age 11 0.95 (0.87-1.04) 0.95 (0.87-1.04) 1.05 (0.95-1.14)
BMI (kg/m2) age 12 0.93 (0.85-1.01) 0.92 (0.85-1.01) 1.02 (0.93-1.12)
BMI (kg/m2) age 13 0.92 (0.84-1.00) 0.92 (0.84-1.00) 1.01 (0.93-1.11)
Height (cm) age 7 1.06 (0.98-1.14) 1.06 (0.98-1.14) 1.06 (0.99-1.15)
Height (cm) age 8 1.05 (0.98-1.14) 1.05 (0.98-1.14) 1.06 (0.98-1.14)
Height (cm) age 9 1.05 (0.97-1.13) 1.05 (0.97-1.13) 1.06 (0.98-1.14)
Height (cm) age 10 1.05 (0.97-1.13) 1.05 (0.97-1.13) 1.06 (0.98-1.14)
Height (cm) age 11 1.05 (0.98-1.14) 1.05 (0.98-1.14) 1.07 (0.99-1.15)
Height (cm) age 12 1.07 (0.99-1.15) 1.07 (0.99-1.15) 1.08 (1.01-1.16)
Height (cm) age 13 1.08 (1.00-1.16) 1.08 (1.00-1.16) 1.09 (1.01-1.17)
  1. CI, confidence interval; HR, hazard ratio; aAdjusted for age (underlying time scale); bAdjusted for age (underlying time scale) and stratified by birth cohort (1930 to 1934, 1935 to 1939, 1940 to 1944, 1945 to 1949). cAdjusted for age (underlying time scale) and mammographic density, and stratified by birth cohort (1930 to 1934, 1935 to 1939, 1940 to 1944, 1945 to 1949).