RT journal article T1 The Classification of Causes of Historical Mortality (CCHM): A proposal of the study of death records T2 La Clasificación de Causas de Mortalidad Histórica (CCMH): una propuesta de estudio de registros de defunción A1 Sainz Otero, Ana María A1 Marín Paz, Antonio Jesús A1 Almenara Barrios, José A2 BiomedicinaBiotecnología y Salud Pública A2 Enfermería y Fisioterapia K1 Cause of death K1 Mortality K1 International Classification of Diseases K1 Coding mechanism K1 Historical demography K1 Causa de muerte K1 Mortalidad K1 Clasificación Internacional de Enfermedades K1 Codificación K1 Demografía histórica K1 Epidemiology K1 Epidemiología K1 History of medicine K1 Historia de la Medicina K1 History of Nursing K1 Historia de la Enfermería AB Objective.To compare and contrast the Classification of Causes of Historical Mortality (CCHM) with the International Classification of Diseases 4th Revision (ICD-4) as methodological elements that can be implemented in historical mortality studies.Materials and methods.We conducted a longitudinal descriptive study of the causes of death in two different localities in Spain, namely, Cadiz and Vejer de la Frontera (1900–1950), to compare the International Classification of Diseases 4th Revision (ICD-4) and the Classification of Causes of Historical Mortality (CCHM). This study proposes the CCHM and its use in statistical analyses of mortality, especially from the mid-19th century to the second half of 20th century. It is a methodological instrument based on the theoretical precepts of Thomas McKeown, expanded through knowledge gained in studies of historical mortality and contrasted with editions of the ICD.Results.The results showed several differences between the ICD-4 and the CCHM. The ten main causes of death (CoDs) in the CCHM account for 74.3% in Cadiz, compared to 56.6% accounted for by the ICD-4. According to the ICD-4, the number of infectious CoDs exceed the number of noninfectious ones in Cadiz every year. On the other hand, based on the CCHM, we observed that while infectious CoD causes of death predominated over noninfectious ones, there was a change in trend, with noninfectious CoDs predominating the following year. During the interval from 1915 to 1937 in Vejer de la Frontera, there were 12 deaths due to ill-specified causes (ICD-4: 18.200) and 0 due to ill-defined causes (CCHM: 3.0.0.0).Conclusions.The CCHM accurately determines the differences between infectious and noninfectious causes of death and explains sociodemographic and health-related aspects in the population and its use in employment, illegitimacy or place-of-death studies. Moreover, it has more advantages, such as the incorporation of new diagnostic expressions, and it can be constantly updated, thus facilitating its use over long periods of time. SN 1932-6203 YR 2020 FD 2020-04-14 LK http://hdl.handle.net/10498/22754 UL http://hdl.handle.net/10498/22754 LA eng NO Contiene la Clasificación de Causas de Mortalidad Histórica (CCMH), así como sus criterios de codificación. Se trata de una clasificación que ha sido muy utilizada en estudios de mortalidad histórica en la provincia de Cádiz, tanto a nivel académico (TFG, TFM y tesis doctoral) como de investigación.No dude en solicitar al autor para correspondencia la traducción al español de la clasificación si lo necesita. DS Repositorio Institucional de la Universidad de Cádiz RD 11-nov-2026