Electronic monitoring of medication adherence in early maintenance phase treatment for pediatric leukemia and lymphoma: identifying patterns of nonadherence

J Pediatr Psychol. 2015 Jan-Feb;40(1):75-84. doi: 10.1093/jpepsy/jst093. Epub 2013 Dec 23.

Abstract

Objective: To describe patterns of treatment adherence to early maintenance phase therapy for acute lymphoblastic leukemia (ALL) and lymphoblastic lymphoma (LBL).

Methods: Using an objective observational method (electronic monitoring), adherence was examined for 139 patients aged 7-19 years diagnosed with ALL or LBL across 6 centers.

Results: The mean adherence percentage was 86.2%. Adherence rates declined over the 1-month of follow-up to 83%. 3 linear trajectories of 6-mercaptopurine adherence were identified: (1) exemplary adherence (n = 99): Averaging nearly 100%; (2) deteriorating (n = 23): Adherence decreased from 100 to 60%; and (3) chronically poor adherence (n = 9): Averaging 40%.

Conclusions: Adherence promotion interventions might be tailored to subgroups of patients who demonstrated problematic patterns of treatment adherence that could place them at risk for relapse. This research demonstrates the importance of using objective real-time measures of medication adherence for measuring and documenting adherence patterns.

Keywords: adherence; cancer and oncology; research design and methods; statistical applications.

Publication types

  • Multicenter Study
  • Research Support, N.I.H., Extramural

MeSH terms

  • Adolescent
  • Child
  • Child, Preschool
  • Drug Monitoring
  • Female
  • Humans
  • Male
  • Medication Adherence / psychology*
  • Medication Adherence / statistics & numerical data*
  • Mercaptopurine / therapeutic use*
  • Precursor Cell Lymphoblastic Leukemia-Lymphoma / drug therapy*
  • Precursor Cell Lymphoblastic Leukemia-Lymphoma / psychology*
  • Young Adult

Substances

  • Mercaptopurine