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Table 3 Urinary excretion of MDA by quintile of percentage mammographic density

From: Mammographic density. Potential mechanisms of breast cancer risk associated with mammographic density: hypotheses based on epidemiological evidence

  Quintiles of percentage density  
  1 2 3 4 5 P value for trend
Premenopausal (n = 160) 2.76a 2.29 2.86 2.75 3.62 0.02
Postmenopausal (n = 175) 3.19 3.23 3.67 3.46 3.88 0.13
All women (n = 335) 3.02 2.76 3.10 3.38 3.68 0.01
  1. Values for malondialdehyde (MDA) are expressed as mmol/day. For 'All women', values are also adjusted for menopausal status. aLeast square mean of MDA adjusted for age and waist circumference (negative inverse). Data are from Hong and coworkers [73].