RT Journal Article
T1 Psychosocial and sociodemographic predictors of attrition in a longitudinal study of major depression in primary care: the predictD-Spain study
A1 Bellón-Saameño, Juan Ángel
A1 Luna-del-Castillo, Juan de Dios
A1 Moreno-Kustner, Berta
A1 Montón-Franco, Carmen
A1 Gil-de-Gómez-Barragán, María Josefa
A1 Sánchez-Celaya, Marta
A1 Díaz-Barreiros, Miguel Ángel
A1 Vicens-Caldentey, Catalina
A1 Motrico, Emma
A1 Martínez-Cañavate, María Teresa
A1 Oliván-Blázquez, Bárbara
A1 Vázquez-Medrano, Ana
A1 Sánchez-Artiaga, María Soledad
A1 March, Sebastiá
A1 Muñoz-García, María del Mar
A1 Moreno-Peral, Patricia
A1 Nazareth, Irwin
A1 King, Michael
A1 Torres-González, Francisco
K1 Depresión mental
K1 Atención primaria
AB Background: Few data exist on the psychosocial factors associated with attrition in longitudinal surveys. This study was undertaken to determine psychosocial and sociodemographic predictors of attrition from a longitudinal study of the onset and persistence of episodes of major depression in primary care.Methods: A systematic random sample of general practice attendees was recruited in seven Spanish provinces between October 2005 and February 2006. Major depression was diagnosed using the Composite International Diagnostic Interview and a set of 39 individual and environmental risk factors for depression were assessed at baseline and after 6 and 12 months of follow-up. Data were analysed using multilevel logistic regression.Results: 7777 primary care attendees aged 18-75 years were selected, of whom 1251 (16.1%) were excluded. Of the remaining 6526, 1084 (16.6%) refused to participate. Thus, 5442 patients (attending 231 family physicians in 41 health centres) were interviewed at baseline, of whom 3804 (70%) and 3567 (66%) remained at 6 and 12 months of follow-up, respectively. The province and sociodemographic factors were stronger predictors of attrition than psychosocial factors. Depression and anxiety had no effect but other psychosocial factors affected attrition. There were different profiles for the patients lost at 12 months when predictors measured at baseline versus 6 months were included.Conclusions: These findings suggest that several psychosocial factors might be considered factors of attrition in primary care cohorts and confirm that baseline characteristics are insufficient for analysing non-response in longitudinal studies, indicating that different retention strategies should be applied for patients interviewed at 6 and 12 months.
PB BMJ Publishing Group
YR 2009
FD 2009
LK https://hdl.handle.net/10630/34448
UL https://hdl.handle.net/10630/34448
LA eng
NO Bellón JA, de Dios Luna J, Moreno B, Montón-Franco C, GildeGómez-Barragán MJ, Sánchez-Celaya M, Díaz-Barreiros MA, Vicens C, Motrico E, Martínez-Cañavate MT, Oliván-Blázquez B, Vázquez-Medrano A, Sánchez-Artiaga MS, March S, del Mar Muñoz-García M, Moreno-Peral P, Nazareth I, King M, Torres-González F. Psychosocial and sociodemographic predictors of attrition in a longitudinal study of major depression in primary care: the predictD-Spain study. J Epidemiol Community Health. 2010 Oct;64(10):874-84. doi: 10.1136/jech.2008.085290. Epub 2009 Sep 16. PMID: 19759057.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 24 ene 2026