- Implausible, impossible, in my view, trends and patterns:
- 100% drug compliance
- Perfect efficacy responses for all subjects
- Identical lab results
- Identical ECG results
- No SAEs reported
- Subjects adhering perfectly to visit schedules.
- Clinical site data not consistent with other centers (statistical outliers)
- Perfect diary cards, immaculate subject CRFs
- All source records & CRFs completed with the same pen
- Source records lack an audit trail
- No signatures of persons completing documentation
- No dates of persons completing documentation
- Subject handwriting inconsistent across documents (consents, diaries)
- Subject signature inconsistent across documents (consents, diaries)
- Questionable subject visit dates (Sundays, holidays, staff vacations)
- Impossible events (eg, randomization before drug delivery)
- Data contains "digit preference"
- Subject visits cannot be verified in the medical chart, appointment schedule or billing records.
How to uncover data identifiers?
- Monitor data.
- Monitor data.
- Then Monitor data again.
- Monitor the Monitors.
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