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06.09.2019 | Ausgabe 6/2019 Open Access

Journal of Cancer Survivorship 6/2019

Cancer survivors who fully participate in the PROFILES registry have better health-related quality of life than those who drop out

Journal of Cancer Survivorship > Ausgabe 6/2019
Imogen Ramsey, Belle H. de Rooij, Floortje Mols, Nadia Corsini, Nicole J. E. Horevoorts, Marion Eckert, Lonneke V. van de Poll-Franse
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s11764-019-00793-7) contains supplementary material, which is available to authorized users.
The original version of this article was revised: In figure 2, the part labels has been changed to ‘i’ and ‘j’ instead of ‘a’ and ‘b’.
A correction to this article is available online at https://​doi.​org/​10.​1007/​s11764-019-00813-6.

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Attrition and subsequent missing data pose a challenge in longitudinal research in oncology. This study examined factors associated with attrition in the PROFILES registry, and its impact on observed health-related quality of life (HRQOL) estimates.


Sociodemographic, clinical, and HRQOL data were collected annually from a cohort of 2625 colorectal cancer survivors between 2010 and 2015. Participant characteristics according to time of dropout were compared using analysis of variance and chi-square tests. Predictors of attrition were examined in logistic regression analysis. Multilevel linear mixed models were constructed to investigate associations between attrition and HRQOL over time.


Participants who dropped out were more likely to be female (OR = 1.23, CI = 1.02–1.47), older (OR = 1.20, CI = 1.09–1.33), less educated (OR = 1.64, CI = 1.30–2.11), and to have depressive symptoms (OR = 1.84, CI = 1.39–2.44) than full responders, and less likely to have high socioeconomic status (OR = 0.74, CI = 0.61–0.94). Participants who dropped out earlier reported significantly worse HRQOL, functioning, and psychosocial symptoms, which declined at a steeper rate over time, than full responders.


Cancer survivors’ HRQOL may be overestimated in longitudinal research due to attrition of the most unwell participants.

Implications for Cancer Survivors

Cancer survivors with the poorest health are at risk of dropping out of PROFILES and possibly withdrawing from other activities. Optimizing participation in PROFILES—a potential mechanism for providing information and access to support—is an avenue for keeping this group engaged.

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