Procedural Compliance and Evidence Documentation Quality in National Bureau of Investigation Casework

Abstract

This study addressed the continuing need to strengthen investigative accountability by determining the relationship between procedural compliance and evidence documentation quality in National Bureau of Investigation casework. Using a compliance documentation analytic design, the study gathered data from NBI personnel with direct involvement in investigative procedures, case documentation, evidence handling, and case file preparation at the Bayombong District Office. A validated and reliability-tested researcher-made instrument was used, with excellent internal consistency for procedural compliance, evidence documentation quality, and the overall scale. Data were analyzed using weighted mean, standard deviation, Kendall’s tau-b correlation, and Somers’ delta to determine both the level and directional association of the variables. Findings showed that procedural compliance was high, with case intake procedures as the strongest area and timely completion of investigative actions as the main concern. Evidence documentation quality was also high, particularly in completeness and accuracy of records, while traceability of evidence movement and timeliness of documentation required closer attention. Kendall’s tau-b revealed a strong positive and significant relationship between procedural compliance and evidence documentation quality. Somers’ delta further indicated a substantial directional association, showing that stronger compliance with procedures was linked to better documentation outcomes. The study concluded that NBI casework in the locale demonstrated a dependable procedural and documentation system, but improvements were needed in custody tracking, documentation timeliness, and consistent procedural follow-through.