Counting the Uncounted Dead: A Population-Anchored Bayesian Reconciliation of Suicide Mortality Across Five Indian Surveillance Systems

How a society counts its self-inflicted deaths shapes how it grieves, governs, and intervenes. India, which accounts for roughly one in four of the world's suicide deaths, runs five surveillance systems that disagree sharply about how many of its people die by suicide. Using the only nationally representative, population-based source-the Sample Registration System Cause of Death series (2014-2016 to 2022-2024)-as an anchor, this study reconciles police (2018-2024), modelled (2016-2023), WHO (2010-2021), and medical-certification (2016-2023) counts in a Bayesian measurement-error framework, with a state-level decomposition for 2023. The population-anchored 2023 burden is approximately 265,000 deaths, 55% above the police count and 33% above the leading modelled estimate. Among women aged 15-29, suicide was the largest single cause of death in every reporting window, at about one in five deaths. Many of India's suicide dead remain administratively invisible.