Human-Centric Health Data Fidelity: Inferential Methodologies for Calibrating Human Systems Integration in Global Health Surveillance

We start from the idea that the reliability of global health surveillance on health data in the present era depends on the expert's ability to validate the fidelity of massive data through rigorous inferential procedures. This paper discusses the potential of a formal framework for assessing the fidelity of a Health Data Space (S), where a determinant (D) precedes monitored effects (F) within a large-scale dataset of exposed (E) and non-exposed (NE) individuals of a given experimental population. We propose a methodology to determine whether risk alerts represent global biological phenomena or unstable local signals by anchoring the data of a health space to established national gold standards and well known references. Specifically, our methodology employs a four-way inferential sequence based on Chi-squared Goodness-of-Fit tests to detect structural deviations across four critical dimensions: demographic proportional representation, clinical fidelity of high-risk strata, internal consistency of the unexposed baseline, and systemic divergence of aggregate incidences of the health space. We demonstrate the efficacy of this framework through a real-world case study of a massive dataset, specifically selected for its known structural complexities and its impact on the international public health discourse. The results we achieved confirm that this strategy is capable of identifying terminal divergences, such as demographic skews and biologically impossible deficits, proving that reported signals can often be products of a data selection bias rather than a biological effect. This approach confirms the necessity of human-centric validation, providing a formal mathematical protocol to calibrate global health systems and ensure that surveillance remains grounded in demographic and empirical reality.