| First PC | Second PC | Third PC |
---|---|---|---|
% of variance explained | 0.064 | 0.034 | 0.022 |
Minimum p value chips | 0.327 | 0.124 | 0.516 |
Covariates | Â | Â | Â |
 Case/control status | 0.02 | 0.0005 | 0.23 |
 Age | 0.00012 | 0.63 | 0.16 |
 Weight | 0.84 | 0.10 | 0.01 |
 Height | 0.73 | 0.59 | 0.60 |
 BMI (continuous) | 0.74 | 0.14 | 0.01 |
 BMI (categorical) |  |  |  |
  Underweight | 0.50 | 0.11 | 0.44 |
  Overweight | 0.86 | 0.11 | 0.34 |
  Obese | 0.96 | 0.20 | 0.01 |
 Physical activity (cat) |  |  |  |
  Moderately inactive | 0.05 | 0.17 | 0.57 |
  Moderately active | 0.03 | 0.01 | 0.38 |
  Active | 0.43 | 0.73 | 0.76 |
 Red meat | 0.02 | 0.08 | 0.90 |
 Alcohol | 0.23 | 0.27 | 0.40 |
 Folate | 0.91 | 0.0006 | 0.72 |
 Smoking |  |  |  |
  Former | 0.77 | 0.72 | 0.72 |
  Current | 0.15 | 0.20 | 0.93 |
 Age at menarche (cat) |  |  |  |
  12–14 | 0.53 | 0.03 | 0.16 |
  ≥15 | 0.20 | 0.41 | 0.88 |
 Age at menopause | 0.45 | 0.73 | 0.25 |
 Menopausal state | 0.002 | 0.25 | 0.78 |
 Ever pill | 0.21 | 0.62 | 0.18 |
 Ever HRT | 0.34 | 0.09 | 0.60 |
 ER status | 0.42 | 0.14 | 0.39 |
 PR status | 0.76 | 0.44 | 0.08 |