San Juan, Puerto Rico — November 6, 2025 — The Institute of Statistics released the results of the Backwater Index for Puerto Rico, a study that offers a comprehensive look at the social and economic situation of Puerto Rico's municipalities. This index constitutes an analysis and planning tool that seeks to promote dialogue, reflection and informed action for the benefit of Puerto Rico's socioeconomic development.

El Lagging Index measures a multidimensional phenomenon using a summary data that allows us to compare the relative performance of municipalities in two dimensions: Economic Mobility and Demography. Five main variables were considered in its design: the percentage of people below the poverty level, the unemployment rate, the percentage of high school graduates (in a population aged 18 and over), the dependency rate by age and the median age.

The index was calculated for two comparative periods: 2014-2018 and 2019-2023, allowing us to observe changes in scores and relative positions of municipalities over time. Index values fluctuate between 0 and 1, with a higher score representing a higher relative level of lagging.

The analysis reveals that 42 municipalities showed a decrease in their score of the Lagging Index, which suggests a relative improvement in the conditions measured by the indicator. Of these, 22 municipalities registered a reduction of more than 5%. In the same way, there are concentrations of municipalities with higher scores —indicating greater relative lagging— in the center, south, southwest and southeast regions of Puerto Rico, while several municipalities in the metropolitan area and adjacent to it showed progress compared to the rest of the archipelago.

The municipalities of Culebra, Toa Alta, Gurabo, Juncos, Dorado, Trujillo Alto, Santa Isabel, Canóvanas, Toa Baja and Las Piedras performed better in their relative index in the last period analyzed (2019-2023). However, the Institute stresses that the index is a relative measure and not an absolute measure, so the results must be analyzed within the context and used as a basis for the development of more specific analyses.

“The value of the index is not in pointing out which municipality is better or worse, but in providing an objective basis for analysis, planning and decision-making. It is an opportunity for mayors and officials who participate in decision-making to know their social and economic reality and to develop strategies that respond to the specific needs of their municipalities,” said Dr. Ronald Hernández, Manager of Statistical Projects at the Institute of Statistics of Puerto Rico.

For the elaboration of the Lagging Index, the Institute applied rigorous statistical methods —including exploratory factor analysis, normalization and aggregation of variables—using data from the five-year estimates of the Community Survey of the U.S. Census Bureau And the Bureau of Labor Statistics.

Data

Table 1 shows the results of the Lagging Index at the municipal level for the periods 2014 - 2018 and 2019 - 2023. The table is ordered according to the position of the municipalities based on their index value for the period 2019 — 2023. The higher the index score, the worse or less favorable the outcome of the phenomenon.

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Table 1: Lagging Index Results

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According to Dr. Hernández, the results of the study highlight the need to design comprehensive public policies that address both the economic aspects and the demographic transformations of Puerto Rico. “The improvements seen in several municipalities are encouraging, but it is essential that socio-economic development efforts are integrated with strategies to respond to the ongoing demographic transition. This includes strengthening geriatric health services, care policies, retention of young people and urban planning adapted to long-lived communities,” said the Institute.”

Hernández indicated that, the Municipal Backwater Index seeks to promote an evidence-based dialogue between the different sectors of Puerto Rico. Its purpose is to serve as a planning and evaluation instrument, which facilitates the identification of areas of opportunity and guides investment decisions, municipal planning and public policy at the central and local levels.”

The full report of the Municipal Backwater Index is available in: Backwater Index for Puerto Rico

The Puerto Rico Statistics Institute is an autonomous governmental entity responsible for coordinating the Government's statistical production service to ensure that the data collection and statistics systems, on which public policies are based, are complete, reliable, and have quick and universal access.

For more information you can write to preguntas@estadisticas.pr. They can also follow social networks through Facebook (@estadisticas .pr), X (@EstadisticasPR), LinkedIn (Institute of Statistics of Puerto Rico) and Instagram (@institutodeestadisticas) accounts.

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PRESS RELEASE

The Puerto Rico Statistics Institute collaborates in the development of a data collection tool for COVID-19 from hospitals

The system collects and consolidates daily data on suspected and confirmed cases

Dr. Orville M. Disdier, executive director of the Puerto Rico Institute of Statistics (Institute), reported that the Institute, in collaboration with the Department of Health and the Task Force Physician, the design, development and implementation of a system for the daily collection and consolidation of data on COVID-19 in hospitals was completed. Through this system, epidemiologists at each hospital can easily and quickly enter basic data on suspected and confirmed cases of COVID-19.

As explained by Disdier, the data required by the system are those necessary for the so-called rapid surveillance system. The content and logistics of this rapid surveillance system were designed and approved by doctors Cynthia Pérez and Enid García, in collaboration with other members of the Task Force and the Department of Health. The variables collected by the system are the following: Gender, age, municipality of residence, date of onset of symptoms, type of exposure, if the person was admitted to the hospital, if the person is on mechanical ventilation, if the person is in intensive care, date of taking the sample, type of test, result of the test, if the person died, and date of death, if that were the case.

“Faced with the urgent need for the Department of Health to have a rapid epidemiological surveillance system in hospitals, the Institute offered full assistance to the Department of Health and the Task Force Doctor. We are very grateful that they have accepted our collaboration. In just one week, we were able to implement the system and at this time hospitals send information in a fast, complete and standardized way about COVID-19 to the Department of Health. Rapid surveillance systems are essential to combat any epidemic or pandemic,” he argued.

The data that hospitals enter into the system is consolidated every day, at approximately 12:00 noon. After consolidation, epidemiologists from the Department of Health verify the quality of the data and make any necessary edits in consultation with hospital epidemiologists. Finally, the consolidated and verified data will be used by the Department of Health to generate daily statistical reports and for other epidemiological surveillance activities. It is also expected that this will help the Department of Health to comply with Act No. 209 of August 28, 2003, which requires them to share the official data generated with the Institute, an aspect with which the Department of Health has not fully complied with until now. In fact, this law establishes that the Institute is a co-owner of all the information and statistical product that government agencies develop, and that it can add and disseminate such information as it deems appropriate. “We urge the Department of Health to comply with the law and to send these and any other data related to COVID-19 to the Institute on a daily basis and promptly so that we can provide citizens with complete, reliable statistics with quick and universal access,” emphasized Dr. Disdier.

Disdier explained that this system of data collection and consolidation did not involve the use of additional funds, since it based its structure on other tools already existing at the Institute and on free-to-use programming languages, such as Python. The Institute's work team dedicated many hours of work to this project, despite all the challenges that COVID-19 represents for everyone in Puerto Rico and the fact that they are currently working remotely from home. The quality, efficiency and effectiveness of this new system is being verified daily by Institute personnel in collaboration with doctors Pérez and García, who have demonstrated a genuine commitment to overcoming COVID-19.

To learn more about the Institute of Statistics, you can access the website: www.estadisticas.pr.gov. On social media through Facebook (@estadisticas .pr), Twitter (@EstadisticasPR) and LinkedIn (Institute of Statistics of Puerto Rico) accounts.

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A new episode of The Institute of Statistics: The Podcast is now available!

Discover the facts about Type 1 Diabetes in the pediatric population of Puerto Rico in Episode 8. On this occasion, Dr. Orville M. Disdier, Executive Director of the Puerto Rico Institute of Statistics, spoke with Mrs. Mariana Benítez Hilera, Executive Director of the Pediatric Diabetes Foundation. In addition, the importance of the first Pediatric Type 1 Diabetes Platform in Puerto Rico, developed by the Institute of Statistics in collaboration with the Pediatric Diabetes Foundation, was discussed.

Access Episode 8 of our podcast through the following link: https://podcasters.spotify.com/pod/show/instituto-de-estadsticas-de-puerto-rico/episodes/Episodio-8-Estadsticas-sobre-Diabetes-Peditrica-Tipo-1-e2gcs7p.

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