Sobrecostos en obras públicas de infraestructura del Perú: base de obras, variables predictoras y resultados, 2018–2023

The analytical sample covers public works with approved technical files between 2018 and 2023.</p><p dir="ltr">The database includes information on project identification, sector, geographic location, level of government, viable investment cost, approved technical-file cost, project characteristics, institutional variables, historical execution indicators, and variables derived for the analysis of cost deviations.</p><p dir="ltr">The main analytical outcome is the percentage cost overrun between the approved technical-file cost and the viable investment cost.

The dataset includes the original cost-overrun measure, cleaned and winsorized versions, a log-transformed outcome, and binary indicators identifying critical cost overruns at alternative thresholds.</p><p dir="ltr">The database also contains data-quality indicators and variables prepared to reduce the risk of information leakage in predictive modelling. Variables that may not have been observable at the intended prediction point are retained for robustness analyses rather than for the main predictive specification.</p><p dir="ltr">A secondary analytical subset contains public works with sufficient information for delay analysis.