Deivis Nicolas Guzman-Tordecilla

Biographic Data

ID1251879
NAMEDeivis Nicolas Guzman-Tordecilla
GIVEN NAMESDeivis Nicolas
FAMILY NAMEGuzman-Tordecilla
SIGNATUREGUZMAN-TORDECILLA D N
AFFILIATIONSJohns Hopkins University
ORCID0000-0002-9419-7056
VERIFIEDYes
TOTAL WORKS8
TOTAL CITATIONS1
AUTHOR COUNT8
EDITOR COUNT0
FIRST PUBLICATION YEAR2022
LATEST PUBLICATION YEAR2026
H-INDEX1

  • The impact of investments in health systems

    Open AccessDeivis Nicolas Guzman-Tordecilla, Shivam Gupta et al.ARTICLEBMJ Global Health2026

    Investments in health systems are essential for achieving effective sustainable and equitable health outcomes. However, national and global level stakeholders continue to grapple with how to quantify the impact of investments, its return of investment, and how to efficiently allocate health system inputs to improve health service delivery, health outputs and outcomes. This rapid review highlights the diverse computational models used to simulate …

  • The effect of mobile phone messaging to support Covid-19 vaccination in Colombia

    Open AccessAndres I Vecino-Ortiz, Deivis Nicolas Guzman-Tordecilla et al.ARTICLEPLOS Global Public Health2026

    During the COVID-19 pandemic, the speed required and the complexity of the information provided about vaccines highlighted the relevance of communicating evidence effectively during a sanitary emergency. We tested three interactive voice response (IVR) interventions, plus one control to increase COVID-19 vaccine uptake in an adult population in Colombia. We conducted a parallel-group randomized controlled trial with four arms in Colombia between …

  • Racial Disparities in Stroke Care before and during Covid-19 in a Universal Health System

    Open AccessDeivis Nicolas Guzman-Tordecilla, Diana Carolina Pinzón-Silva et al.ARTICLEJournal of Racial and Ethnic…2026References: 59

  • Can cash improve diet quality in old age? evidence from a large-scale unconditional transfer

    Open AccessDeivis Nicolas Guzman-Tordecilla, Mariana Rodríguez-Patarroyo et al.ARTICLEWorld Development2026References: 44

  • Economic and health implications of early Covid-19 lockdown exits

    Open AccessDeivis Nicolas Guzman-Tordecilla, Antonio J TrujilloARTICLESocial Science & Medicine2025Cited by: 1References: 12

  • Recruiting hard-to-reach populations via respondent driven sampling for mobile phone surveys in Colombia

    Open AccessCamila Solorzano-Barrera, Mariana Rodríguez-Patarroyo et al.ARTICLEGlobal Health Action2024

    BACKGROUND: Uptake of mobile phone surveys (MPS) is increasing in many low- and middle-income countries, particularly within the context of data collection on non-communicable diseases (NCDs) behavioural risk factors. One barrier to collecting representative data through MPS is capturing data from older participants.Respondent driven sampling (RDS) consists of chain-referral strategies where existing study subjects recruit follow-up participants …

  • Improving Covid-19 vaccine uptake

    Open AccessNathaly Aya Pastrana, Sandra Milena Agudelo-Londoño et al.ARTICLEGlobal Health Action2023

    BACKGROUND: COVID-19 vaccination is a global priority. Latin American countries have some of the highest COVID-19 death rates worldwide with vaccination hampered by a variety of reasons, including mis- and disinformation, vaccine hesitancy, and vaccine supply constraints. Addressing vaccine hesitancy through effective messages has been found to help increase vaccine uptake. Participatory processes could be used to co-design health messages for th…

  • Evaluation of the implementation of the Framework Convention on Tobacco Control (FCTC) in Colombia

    Open AccessDeivis Nicolas Guzman-Tordecilla, Blanca Llorente et al.ARTICLEHealth Policy and Planning2022

    Evidence-based interventions recommended in the Framework Convention on Tobacco Control of the World Health Organization (WHO FCTC) are subject to implementation factors that might affect their actual effectiveness. The Colombian law enacting key commitments from WHO’s FCTC was signed in 2009. This study aims at evaluating the potential impact of the enactment and implementation of these WHO FCTC on four outcomes for tobacco consumption (last-yea…