PHARMACEUTICAL EXPORT PROFILES AND BILATERAL CUSTOMS REPORTING DISCREPANCIES ACROSS MAJOR ECONOMIES IN INTERNATIONAL TRADE NETWORKS

This analysis examines whether pharmaceutical export scale and composition distinguish bilateral customs reporting disagreement in international trade. UN Comtrade records provide a balanced panel of 60 annual observations across 12 directed trading relationships among China, Germany, the United Kingdom and the United States from 2010 to 2014. Descriptive distributions, ranked groups, Spearman correlations and exploratory sample restrictions characterize absolute symmetric discrepancies between exports and mirror imports. Mean discrepancy is 0.3225, with substantial variation across opposite trade directions. Bulk medicament share exhibits the clearest positive association, with a correlation of 0.4005 and positive correlations across every annual and country omission comparison. Export scale shows weak monotonic correspondence, while retail medicament share produces contrasting mean and rank patterns sensitive to sample composition. These findings distinguish persistent descriptive correspondence from composition dependent patterns without identifying causal mechanisms. The contribution is a pharmaceutical trade measurement framework that preserves direction, product composition and sensitivity when interpreting reporting disagreement. Statistical authorities and trade analysts can use these distinctions to prioritize reconciliation of corresponding records before drawing conclusions from aggregate balances