The family history method using diagnostic criteria. Reliability and validity

Area of Science:

• Psychiatry
• Genetics
• Medical Informatics

Background:

• Familial history data aids psychiatric diagnosis, etiological research, and classification.
• Two primary methods exist: family history (from patient/relative) and family study (direct interviews).

Purpose of the Study:

• To compare the accuracy and utility of the family history method versus the family study method.
• To introduce the Family History-Research Diagnostic Criteria instrument.

Main Methods:

• Comparative analysis of data collected via family history and family study methods.
• Development and application of the Family History-Research Diagnostic Criteria for 12 psychiatric diagnoses.

Main Results:

• The family study method generally yields more accurate information.
• The family history method demonstrates significant underreporting of psychiatric disorders.
• Utilizing diagnostic criteria enhances sensitivity but does not eliminate underreporting.

Conclusions:

• The family study method is preferred for its higher accuracy in assessing familial psychiatric history.
• The Family History-Research Diagnostic Criteria can improve the family history method's sensitivity.
• Underreporting remains a key limitation of the family history method, even with diagnostic aids.