Purpose of the Scale

The goal is to assess the functionality of patients and create a general functionality index, particularly for individuals with chronic schizophrenia. It is commonly used by psychiatrists.

Scale Analysis

The scale was developed by Honigfeld and Klett in 1966 and consists of 30 items (both positive and negative) that assess how functional a person with schizophrenia is. Evaluation is based on observation of the patients, conducted during the three days prior to scoring.

Scoring and Statistical Analysis

Scoring is done on a 5-point scale ranging from 0 (never) to 4 (always). The final score is calculated as the average of the summed scores from two raters (e.g., psychiatrists). A higher score indicates higher functionality.

Validity and Reliability

The scale demonstrated a high degree of reliability with a correlation coefficient r = 0.88. Additionally, the internal consistency index (Cronbach’s alpha) showed satisfactory reliability with a value of 0.7.

References

Honigfeld, G., Gillis, R. D., & Klett, C. J. (1966). NOSIE-30: A treatment-sensitive ward behavior scale. Psychological Reports, 19(1), 180–182.
Kane, J., Honigfeld, G., Singer, J., & Meltzer, H. (1988). Clozapine for the treatment-resistant schizophrenic: A double-blind comparison with chlorpromazine. Archives of General Psychiatry, 45(9), 789–796.
Margari, F., Matarazzo, R., Casacchia, M., Roncone, R., Dieci, M., Safran, S., … & Simoni, L. (2005). Italian validation of MOAS and NOSIE: A useful package for psychiatric assessment and monitoring of aggressive behaviours. International Journal of Methods in Psychiatric Research, 14(2), 109–118.
Nir, M. S., Khalili, R., Mahmoudi, H., Ebadi, A., & Habibi, R. (2020). Validation of the 30-item Nurses’ Observation Scale for Inpatient Evaluation and Mental Health-Care Promotion. Journal of Education and Health Promotion, 9.