Clinical Trial Data Validation and Cross-Reference Engine

Create a comprehensive Python solution using pandas and numpy that performs multi-dimensional validation of clinical trial spreadsheets. Develop advanced validation rules that check for statistical outliers, cross-reference patient demographics with intervention results, and generate a detailed compliance report. The script should support multiple input formats, handle missing data intelligently, and produce visualizations of data integrity metrics. Include specific checks for common clinical trial data inconsistencies and potential reporting errors.