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J Cancer Surviv. 2008 Jun;2(2):95-103. doi: 10.1007/s11764-008-0049-y. Epub 2008 Apr 17.

Challenges associated with longitudinal survivorship research: attrition and a novel approach of reenrollment in a 6-year follow-up study of older breast cancer survivors.

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  • 1Boston University Schools of Medicine, Boston University Medical Center, 88 East Newton Street, Robinson 2, Boston, MA 02118, USA. kmclough@bu.edu

Abstract

INTRODUCTION:

Breast cancer is the most common type of cancer among older women. The vast majority of women with breast cancer become long-term survivors.

METHODS:

We selected a convenience sample of women with: (1) stage I-IIIa disease, (2) age 65-years or older, and (3) permission from physician to contact. Data were collected over 6-years of follow-up from consenting patients' medical records, telephone interviews, and the National Death Index. Before year 4 of follow-up we attempted to relocate women lost to follow-up using a single protocol and when successful, invited them to reenroll in the study. In this secondary data-analysis, baseline characteristics were compared among subjects with continuous follow-up, those who reenrolled, died, or were lost to follow-up.

RESULTS:

Among 660 subjects, 177 had complete follow-up, 182 reenrolled after a period of non-participation, 171 died, and 130 were lost to follow-up. No important differences were found between reenrolled women and those with continuous follow-up or those lost to follow-up. There were nominal differences in age and comorbidity among women lost to follow-up compared to those with complete follow-up.

DISCUSSION/CONCLUSIONS:

This study highlights challenges in longitudinal research of cancer survivorship, specifically the potential benefit of reenrollment.

IMPLICATIONS FOR CANCER SURVIVORS:

Our findings provide a novel and promising approach to surmount some of the challenges in longitudinal research aimed at enhancing knowledge and the overall cancer survivorship experience of older adults.

[PubMed - indexed for MEDLINE]
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