Table 4 Linear regression model for \(\text {fPC}_{14}^{1}\) with breast cancer risk factor covariates (CAHRES)

Intercept

−2.24

0.260

< 2×10⁻¹⁶

Age

−0.003

0.003

0.224

BMI

0.078

0.005

< 2×10⁻¹⁶

PD

0.028

0.001

< 2×10⁻¹⁶

Parity and AFB

Nulliparous

Parity ≤2 and AFB ≤25

0.052

0.066

0.420

Parity ≤2 and AFB >25

0.086

0.065

0.188

Parity >2 and AFB ≤25

0.015

0.068

0.826

Parity >2 and AFB >25

0.004

0.089

0.959

HRT use

Never

Past

−0.005

0.085

0.953

Current

0.016

0.048

0.732