Table 5

Percent population attributable fraction (PAF)1and 95% confidence intervals (CI) according to significant variables and their combination
PAF (95% CI)2
Parity (< 7) 52.6 (41.2 – 61.8)
BMI (> 25) 24.8 (8.3 – 38.3)
Parity + BMI 64.2 (52.1 – 73.2)
Family history of breast cancer (FH) 15.7 (10.6 – 20.5)
Oral contraceptive usage (OC) 13.7 (0.3 – 25.3)
Parity + BMI + FH + OC 71.3 (63.1 – 80.7)

1 The PAFs denote the proportion of an outcome in the population that would be prevented if the exposure were completely removed assuming the association was causal and all confounding accounted for.

2 Derived from multivariable logistic regression model.

Ghiasvand et al.

Ghiasvand et al. BMC Cancer 2012 12:414   doi:10.1186/1471-2407-12-414

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