Table 1.

Breast cancer risk factors by NSAID use at enrollment of the CPS-II Nutrition Cohort in 1992-1993

No NSAID use (n = 34,933)1-29 NSAID pills per month (n = 20,084)≥30 NSAID pills per month (n = 22,396)
Age (y)
    40-492.22.81.9
    50-5933.338.931.6
    60-6949.846.549.6
    70-7914.711.816.8
    ≥800.10.00.1
Menopausal status
    Premenopausal4.45.04.0
    Perimenopausal1.11.21.0
    Postmenopausal93.793.294.4
    Unknown0.70.70.7
Race
    White96.897.498.0
    Black1.71.41.2
    Other1.41.20.8
Body mass index (kg/m2)
    <2225.723.118.9
    22 to <2530.330.026.7
    25 to <2715.316.016.0
    27 to <3014.215.416.8
    ≥3012.914.020.0
    Unknown1.51.41.6
Weight gain or loss since age 18 (lb)
    >5 loss5.94.84.5
    5 loss-5 gain11.510.18.9
    6-15 gain17.616.614.2
    16-25 gain17.818.216.9
    26-35 gain15.615.615.3
    >35 gain29.532.638.3
    Unknown2.11.91.9
Hormone replacement therapy
    Never53.048.743.3
    Current30.233.838.7
    Former13.013.514.8
    Ever, recency unknown1.72.11.8
    Unknown2.01.91.4
Most recent mammogram
    Never8.47.56.0
    Within the past year64.065.267.5
    1-3 y ago20.420.520.4
    >3 y ago6.45.95.2
    Unknown0.90.90.8
  • NOTE: Data are percentages adjusted to the age distribution of the entire study population.