Objective
To determine if adherence to self-care modalities for breast cancer-related lymphedema (BCRL) predicts BCRL outcomes among 128 breast cancer (BrCa) survivors who participated in the 12-month physical activity and lymphedema (PAL) trial.
Design
This was a prospective cohort study. Adherence to 10 BCRL self-care modalities, as recommended in the clinical practice guidelines for the management of BCRL was assessed by questionnaire at baseline. BCRL outcomes assessed at baseline and 12-months included volumetry, circumferences, bioimpedence spectroscopy, the Norman lymphedema survey, and clinician-defined lymphedema exacerbations requiring treatment. Generalized linear models were used to estimate the relationship between adherence to BCRL self-care modalities and the likelihood of experiencing a BCRL outcome.
Results
Adherence to BCRL self-care activities did not predict experiencing any BCRL outcomes at 12-months. Levels of adherence to BCRL self-care modalities did not predict a ≥5% decrease in interlimb volume (Ptrend=0.79), ≥5% decrease in the sum of interlimb arm circumferences (Ptrend=0.47), ≥10% decrease in bioimpedence spectroscopy (Ptrend=0.83), ≥1 decrease in self-reported lymphedema symptoms (Ptrend=0.91), or clinician-defined lymphedema exacerbation requiring treatment (Ptrend=0.84).
Conclusions
Our findings suggest levels of BCRL self-care adherence do not predict BCRL outcomes among BrCa survivors with stable lymphedema who were followed for 12-months.