Objective: To develop a brief assessment table suitable for adult male offenders in prison.
Methods: On the basis of synthesizing the existing research results and open questionnaire survey,
the theoretical dimension of criminal danger was constructed, and the risk assessment table in prison
was prepared. The final questionnaire was then developed through exploratory factor analysis of 5180
prisoners in custody. Results: The final questionnaire was composed of 30 items, including history of risky
behavior, dangerous ideation (planning), physical and mental illness, major life events and other four
dimensions, and predicted three risk tendencies of violence, suicide and escape. The questionnaire was
significantly correlated with Copa-TL, indicating good empirical validity. The Cronbach α coefficient of
the questionnaire is 0.701, and the split and half reliability is 0.754, indicating that the questionnaire has
good reliability. Conclusion: The reliability and validity of the questionnaire are good, and it can be used
as a screening tool for the risk of adult male prisoners in prison.