Methods: A "Quantitative immunoassay fecal occult blood test " and a questionnaire of habitual diet and daily health behavior were used to screen colorectal cancer and related health behaviors to determine the prevalence an its correlations with habitual diet and health behavior in psychiatric patients. Samples of this study were recruited from a psychiatric hospital in southern Taiwan.
Results: 2088 psychiatric patients (1011, 48.4% male and 1077, 51.6% female) were invited to complete this screen. Average age was 57.33 ± 5.47 years. The positive rate of colorectal cancer was 9.9% and 8.1% for male and female respectively. In the number of diagnostic items aspect, the more psychiatric diagnostic items the patients had, the more positive rate of colorectal cancer the patients had (7.9%, 9.6%, and 12.1% for the patients had 1, 2, and 3 psychiatric diagnosis, respectively, p = 0.045), and patients with 3 psychiatric diagnostic items had 1.62 fold risk of colorectal cancer to with 1 diagnostic item (p = 0.02).
Conclusion: This survey showed that psychiatric patients are in the risk of colorectal cancer, and the more items of psychiatric diagnosis, the more risk of colorectal cancer these patients have. These preliminary data of this survey hopefully can be the reference for psychiatric professionals to improve the physical care for these patients.