Explanipedia

Counterfactual evaluation of elementary and secondary school policies in the COVID-19 pandemic Open

Benedetta Canfora, Rey Audie S. Escosio, Otilia Boldea, Ana Nunes, Ganna Rozhnova · 2025

Understanding the role of elementary and secondary schools in SARS-CoV-2 transmission is essential for designing effective public health policies. We developed a stochastic age-stratified transmission model, fitted to Dutch epidemiological…

Retrospective evaluation of school-related measures on pre-vaccination transmission dynamics of SARS-CoV-2 Open

Benedetta Canfora, Rey Audie S. Escosio, Christiaan H. van Dorp, Otilia Boldea, Marc J. M. Bonten , et al. · 2025

Schools are important settings for respiratory virus transmission and a major focus of pandemic control measures in the absence of effective pharmaceutical interventions. During the COVID-19 pandemic, decisions regarding school closures an…

Testing for multiple change-points in macroeconometrics: an empirical guide and recent developments Open

Otilia Boldea, Alastair R. Hall · 2025

Medical Risk Classification For Severe COVID-19 Based On Chronic Medical Conditions: A Comparative Analysis Open

Ilse Westerhof, Annemarijn R de Boer, Angela Lupattelli, Isabel Slurink, Otilia Boldea , et al. · 2024

Background The European Centre for Disease Prevention and Control lists medical conditions conferring high- or moderate-risk for severe COVID-19. Individual European countries also developed risk classifications to guide COVID-19 vaccinati…

Efficient two-sample instrumental variable estimators with change points and near-weak identification Open

Bertille Antoine, Otilia Boldea, Niccolò Zaccaria · 2024

We consider estimation and inference in a linear model with endogenous regressors where the parameters of interest change across two samples. If the first-stage is common, we show how to use this information to obtain more efficient two-sa…

Age-specific transmission dynamics of SARS-CoV-2 during the first 2 years of the pandemic Open

Otilia Boldea, Amir Alipoor, Sen Pei, Jeffrey Shaman, Ganna Rozhnova · 2024

During its first 2 years, the SARS-CoV-2 pandemic manifested as multiple waves shaped by complex interactions between variants of concern, non-pharmaceutical interventions, and the immunological landscape of the population. Understanding h…

Efficient Two-Sample Instrumental Variable Estimators with Change Points and Near-Weak Identification Open

Bertille Antoine, Otilia Boldea, Niccolò Zaccaria · 2024

Disentangling the effect of measures, variants, and vaccines on SARS-CoV-2 infections in England: a dynamic intensity model Open

Otilia Boldea, Adriana Cornea‐Madeira, João Madeira · 2023

Summary In this paper, we estimate the path of daily SARS-CoV-2 infections in England from the beginning of the pandemic until the end of 2021. We employ a dynamic intensity model, where the mean intensity conditional on the past depends b…

Age-specific transmission dynamics of SARS-CoV-2 during the first two years of the pandemic Open

Otilia Boldea, Amir Alipoor, Sen Pei, Jeffrey Shaman, Ganna Rozhnova · 2022

During its first two years, the SARS-CoV-2 pandemic manifested as multiple waves shaped by complex interactions between variants of concern, non-pharmaceutical interventions, and the immunological landscape of the population. Understanding…

Testing for a Threshold in Models with Endogenous Regressors Open

Mario Rothfelder, Otilia Boldea · 2022

We show by simulation that the test for an unknown threshold in models with endogenous regressors - proposed in Caner and Hansen (2004) - can exhibit severe size distortions both in small and in moderately large samples, pertinent to empir…

Disentangling the effect of measures, variants and vaccines on SARS-CoV-2 Infections in England: A dynamic intensity model Open

Otilia Boldea, Adriana Cornea‐Madeira, João Madeira · 2022

In this paper, we estimate the path of daily SARS-CoV-2 infections in England from the beginning of the pandemic until the end of 2021. We employ a dynamic intensity model, where the mean intensity conditional on the past depends both on p…

Bootstrapping structural change tests Open

Otilia Boldea, Adriana Cornea‐Madeira, Alastair R. Hall · 2019

Testing for a Threshold in Models with Endogenous Regressors Open

Mario Rothfelder, Otilia Boldea · 2019

Bootstrapping Structural Change Tests Open

Otilia Boldea, Alastair R. Hall, Adriana Cornea‐Madeira · 2018

This paper analyses the use of bootstrap methods to test for parameter change in linear models estimated via Two Stage Least Squares (2SLS). Two types of test are considered: one where the null hypothesis is of no change and the alternativ…

Change Point Estimation in Panel Data with Time-Varying Individual Effects Open

Otilia Boldea, Bettina Drepper, Zhuojiong Gan · 2018

This paper proposes a method for estimating multiple change points in panel data models with unobserved individual effects via ordinary least-squares (OLS). Typically, in this setting, the OLS slope estimators are inconsistent due to the u…

Structural Break Tests Robust to Regression Misspecification Open

Alaa Abi Morshed, Elena Andreou, Otilia Boldea · 2018

Structural break tests for regression models are sensitive to model misspecification. We show—analytically and through simulations—that the sup Wald test for breaks in the conditional mean and variance of a time series process exhibits sev…

Structural Break Tests Robust to Regression Misspecification Open

Alaa Abi Morshed, Elena Andreou, Otilia Boldea · 2016

Testing for a Threshold in Models with Endogenous Regressors Open

Mario Rothfelder, Otilia Boldea · 2016

Otilia Boldea YOU? Author Swipe