Title: Characterization of a population aged 70 years or older treated in the hospitalization service of a university hospital in Bogotá between July and December of 2018. Authors: Camacho A., Rico A., Introduction: With scientific and technological advances, it has been possible to increase the life expectancy of people, giving place to population aging and causing an epidemiological transition, which is a challenge in health care of the elderly due to its heterogeneity and presence of multimorbidity. This is also applicable to Colombia, and thus it is necessary to know the clinical, epidemiological and social characteristics of the hospitalized elderly, to help to develop institutional and state policies that optimize their healthcare. Objectives: To characterize elderly people >70 years old in a University Hospital in Bogotá between July and December 2018 Methods: Cross-sectional observational study with retrospective information collected from the review of medical records of hospitalized patients aged >70 years who were treated at a University Hospital in the city of Bogotá between July and December 2018. The statistical analysis will be done with qualitative variables in percentages with confidence intervals at 95%, and the quantitative ones with measures of central tendency. Results: 3641 hospitalization exits were documented during the timeframe of the study in which 989 histories were analyzed from which 29.88% corresponded to patients that are 70 years of age or older. The average age of the patients was 80.87 and 51.26% were women. Patients remained hospitalized for an average of 7.49 days without noticing any variation between the five-year groups. Patients were treated primarily by internal medicine in 49.44% of the cases followed by geriatrics in 20.32% of the cases. Medical was the main type of treatment (84.23% of the cases) and infectious pathologies were the main cause for hospitalization (29.09%). 28.31% of the patients had some degree of dependency, however the corresponding subregister was 53.49%. 59.86% of the population showed at least one geriatric syndrome, being polypharmacy the most frequent with 32.46% of the cases. The death rate was of 5.86%. Conclusions: No important difference was observed in the days of hospital stay between the subjects analyzed by five-year groups as compared to the regular population. There is a tendency to pursue a therapeutic approach to the elderly like the one that would be performed on a younger adult due to the lack of clear criteria of which patients should be seen by geriatric specialists. Awareness must be raised and training must be provided to all health-related personnel regarding the approach of elder patients based on clinical history. It is advisable to develop a standardized clinical history format for the elder patient to achieve a better relevant data collection like functionality, social risk, and fragility