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Table 2 Association between breast density (odds of having mixed/dense breasts) and exposure variables from the Copenhagen mammography register and the 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

 

Crude model OR (95% CI)

Adjustedamodel OR (95% CI)

Age at screening (years)

0.90 (0.89-0.91)

1.00 (0.98-1.02)b

Born 1930 to 1934

1.00

1.00 c

Born 1935 to 1939

1.34 (1.21-1.48)

1.34 (1.16-1.55)

Born 1940 to 1944

2.16 (1.96-2.39)

2.18 (1.80-2.65)

Born 1945 to 1949

3.89 (3.48-4.34)

3.92 (3.19-4.81)

Birth weight (g)

0.95 (0.87-1.03)

0.98 (0.90-1.07)

BMI at age 7 (kg/m2)

0.72 (0.70-0.75)

0.69 (0.66-0.72)

BMI at age 8 (kg/m2)

0.70 (0.67-0.73)

0.65 (0.62-0.68)

BMI at age 9 (kg/m2)

0.67 (0.64-0.69)

0.62 (0.59-0.64)

BMI at age 10 (kg/m2)

0.64 (0.61-0.67)

0.59 (0.57-0.62)

BMI at age 11 (kg/m2)

0.61 (0.59-0.64)

0.57 (0.55-0.60)

BMI at age 12 (kg/m2)

0.60 (0.58-0.63)

0.56 (0.54-0.59)

BMI at age 13 (kg/m2)

0.59 (0.56-0.61)

0.56 (0.53-0.58)

Height at age 7 (cm)

0.99 (0.96-1.03)

0.99 (0.95-1.03)

Height at age 8 (cm)

0.99 (0.96-1.03)

0.98 (0.95-1.02)

Height at age 9 (cm)

0.99 (0.95-1.02)

0.98 (0.94-1.01)

Height at age 10 (cm)

0.97 (0.94-1.01)

0.96 (0.93-1.00)

Height at age 11 (cm)

0.96 (0.93-1.00)

0.95 (0.92-0.99)

Height at age 12 (cm)

0.96 (0.93-0.99)

0.95 (0.91-0.98)

Height at age 13 (cm)

0.98 (0.95-1.01)

0.96 (0.93-1.00)

  1. OR, odds ratio; CI, confidence interval; BMI, body mass index. aAdjusted for age at screening and birth cohort; badjusted for birth cohort; cadjusted for age at screening.