Table 2.

Relative odds of meeting physical activity guidelines at 5 and 10 years after diagnosis, according to select baseline demographic and prognostic factors

OR (95% CI)
Variable5-year postdiagnosis10-year postdiagnosis
Age <55 years at diagnosis (n = 344)1.001.00
Age ≥55 years at diagnosis (n = 287)1.06 (0.73–1.56)0.95 (0.64–1.39)
BMI <25.0 kg/m2 (n = 388)1.001.00
BMI ≥25.0 kg/m2 (n = 343)0.86 (0.62–1.21)1.01 (0.68–1.49)
Non-Hispanic White (n = 391)1.001.00
Hispanic (n = 67)1.82 (1.07–3.09)0.94 (0.51–1.74)
African American (n = 160)0.37 (0.24–0.57)0.28 (0.16–0.51)
≥College grad (n = 372)1.001.00
≥College grad (n = 258)1.34 (0.91–1.96)1.20 (0.78–1.85)
Never or former smoker (n = 559)1.001.00
Current smoker (n = 72)0.32 (0.14–0.73)0.54 (0.22–1.35)
In situ or Stage 1 (n = 399)1.001.00
Stage II–IIIA disease (n = 182)0.84 (0.54–1.31)0.66 (0.89–1.11)
Estrogen-receptor negative (n = 95)1.001.00
Estrogen-receptor positive (n = 350)0.67 (0.35–1.29)0.66 (0.33–1.31)
Surgery only (n = 196)1.001.00
Surgery + radiation (n = 236)1.24 (0.78–1.96)1.66 (0.97–2.84)
Any chemotherapy (n = 199)1.23 (0.74–2.04)1.57 (0.87–2.83)
No female relative with breast cancerb (n = 388)1.001.00
1+ female relative(s) with breast cancer (n = 243)1.38 (1.01–1.88)1.04 (0.638–1.60)
No comorbiditya (n = 469)1.001.00
Presence of ≥1 comorbidity (n = 140)0.73 (0.44–1.20)0.85 (0.48–1.50)
Do not meet PA guidelines prediagnosis (n = 414)1.001.00
Meet PA guidelines prediagnosis (n = 216)2.76 (1.85–4.10)3.35 (2.13–5.28)

Abbreviations: CI, confidence interval; BMI, body mass index; PA, physical activity.

ORs are adjusted for age and baseline BMI.

  • aInformation on comorbidities was collected at 24-month follow-up.

  • bIncludes 49 women who responded ‘Don't know' regarding 1 or more female relatives diagnosed with breast cancer; female relatives included sisters, mother, daughters, grandmother, aunt, or nieces.