Escala de Depresión del Centro de Estudios Epidemiológicos (CES-D) en México: análisis bibliométrico / Center of Epidemiological Studies of Depression Scale (CES-D) in Mexico: bibliometric analysis

The CES-D is a screening instrument to measure depressive symptoms during the last week. It is useful and easy to use because no trained staff is needed to administer and score it. Interest in depression has been consistent in Mexico in recent years, and the CES-D is one of the most used scales. The goal of this paper is to present a bibliometric analysis of scientific papers reporting data obtained with the scale; the papers had to be published in a scientific journal with a reviewing board, a group of peer reviewers and be ISNN registered. Materials were found in EBSCOhost and Google Scholar databases. 80 papers were published between 1986 and 2011. An average of three papers was published every year. Most of the studies were developed in Mexico City and nationwide; there was a bi-national study, a multinational one, and four in several states combined. The journals with the highest number of papers were: SALUD MENTAL, Salud Pública de México, and Revista Mexicana de Psicología. There were 17 institutions involved in coordinating the studies; six of them were international. 41% of the studies were conducted with adolescents, 32% with women, and 90% in urban contexts. There are some areas which need further study to build a more comprehensive understanding about the distribution and characteristics of depressive symptoms and hence new studies must be designed to include understudied groups and populations.

La Escala de Depresión del Centro de Estudios Epidemiológicos (CES-D) es un instrumento de tamizaje para la detección de casos de depresión con base en su sintomatología durante la última semana. La CES-D ha demostrado ser una herramienta útil y económica en formato autoaplicable en virtud de que no requiere personal especializado para su calificación y es autoaplicable. Reconocida la importancia de la depresión, el interés por su investigación ha sido consistente en México durante las últimas décadas y la CES-D ha sido uno de los instrumentos más empleados. El objetivo de este trabajo es presentar un análisis bibliométrico de las publicaciones científicas sobre su uso en México. Los artículos seleccionados tenían que estar publicados en revistas científicas con comité editorial, cuerpo académico de dictaminadores e ISSN. Las búsquedas se hicieron en EBSCOhost y Google Académico. Se analizaron 80 artículos, desde 1986 hasta julio de 2011. El promedio por año fue de tres artículos; 2007 y 2008 fueron los años con más publicaciones. La mayor cantidad de investigaciones se ha realizado en el Distrito Federal y a nivel nacional; hay una investigación binacional, otra multinacional y cuatro en entidades federativas combinadas. Las revistas con mayor cantidad de publicaciones fueron: SALUD MENTAL (27 artículos), Salud Pública de México (11 artículos) y la Revista Mexicana de Psicología (cinco artículos). Diecisiete instituciones (con predominio del Instituto Nacional de Psiquiatría Ramón de la Fuente) han sido responsables de las investigaciones; seis de ellas, a nivel internacional. 41.25% con adolescentes, 32.5% con mujeres y 90% en contextos urbanos, con predominio en la población general y en adolescentes estudiantes. Existen áreas por explorar para contar con un panorama más completo sobre las características y distribución de la sintomatología depresiva, por lo que habría que diseñar estudios con grupos y poblaciones menos explorados.

The Mini-mental State Examination revisited: ceiling and floor effects after score adjustment for educational level in an aging Mexican population.

BACKGROUND: The Mini-mental State Examination (MMSE) is the most widely used cognitive test, both in clinical settings and in epidemiological studies. However, correcting its score for education may create ceiling effects when used for poorly educated people and floor effects for those with higher education. METHODS: MMSE and a recent cognitive test, the seven minute screen (7MS), were serially administered to a community sample of Mexican elderly. 7MS test scores were equated to MMSE scores. MMSE-equated 7MS differences indicated ceiling or floor effects. An ordinal logistic regression model was fitted to identify predictors of such effects. RESULTS: Poorly educated persons were more prevalent on the side of MMSE ceiling effects. Concentration (serial-sevens), orientation and memory were the three MMSE subscales showing the strongest relationship to MMSE ceiling effects in the multivariate model. CONCLUSION: Even when MMSE scores are corrected for educational level they still have ceiling and floor effects. These effects should be considered when interpreting data from longitudinal studies of cognitive decline. When an education-adjusted MMSE test is used to screen for cognitive impairment, additional testing may be required to rule out the possibility of mild cognitive impairment.