Table 2.

Select characteristics among participants in the CWLS by weight change category

Weight change from breast cancer diagnosis to CWLS follow-up (kg)
−50 to −10.1 (n = 114)−10.0 to −2.1 (n = 608)−2.0 to 2.0 (n = 1,037)2.1 to 10.0 (n = 1,682)10.1 to 103 (n = 552)
Characteristics at diagnosis*
    Age, mean y (SD)62.6 (9.2)62.2 (9.0)59.9 (9.5)57.1 (9.6)52.9 (9.1)
    BMI, mean kg/m2 (SD)32.0 (5.7)27.0 (4.9)24.4 (4.1)25.0 (4.4)26.1 (5.2)
    Ethnicity, % White98.398.998.898.798.2
    Breast cancer stage at diagnosis, %
        Local73.774.074.972.168.3
        Regional26.326.025.127.931.7
    First-degree family history of breast cancer, %16.721.620.620.218.5
    Education ≥12 y, %84.288.593.293.292.4
Characteristics at follow-up
    Postmenopausal, %91.291.586.881.372.3
    BMI, mean kg/m2 (SD)26.5 (5.6)25.8 (4.9)24.9 (4.3)27.3 (4.7)32.8 (6.4)
    Smoking history, % current13.27.710.19.87.4
    Alcohol, mean drinks/d (SD)0.2 (0.5)0.4 (0.7)0.5 (0.8)0.5 (0.9)0.4 (0.7)
    Total recreational physical activity, mean MET-h/wk (SD)12.9 (18.1)15.9 (22.4)18.6 (24.3)16.8 (21.3)12.1 (16.9)
    Energy intake, mean kcal/d (SD)1,583 (575)1,726 (588)1,713 (513)1,703 (528)1,741 (623)
    Hormone therapy, % current1.82.82.12.02.5
    Years from diagnosis to follow-up survey, mean (SD)6.4 (3.0)6.0 (2.8)5.1 (2.9)5.7 (3.2)6.9 (3.4)
  • Abbreviation: MET, metabolic equivalent task.

  • * Data obtained by parent case-control studies.

  • Data obtained by CWLS questionnaire.

  • Year before enrollment in CWLS.