Coercion in psychiatry: psychometric validation of the Portuguese Staff Attitudes to Coercion Scale (SACS)

Background: There is a growing recognition that staff attitudes toward coercion in mental health care may influence its application. This study presents the psychometric properties of the Portuguese version of the Staff Attitudes towards Coercion Scale (SACS) and describes mental health professionals’ attitudes towards coercion in Portugal. Methods: Mental health professionals working in five Portuguese mental health services in urban and rural regions of Portugal were invited to complete a questionnaire comprising the SACS and a socio-demographic form. Psychometric analyses including construct validity and internal consistency were carried out using R software. Results: A total of 91 out of 119 questionnaires completed were valid for analysis. Fifty-seven (62.64%) respondents were female, with an age range of 24 to 69 years (M = 39.33; SD = 11.09). More than half of them were nurses (52.75%, n = 48), and a third were psychiatrists (36.26%, n = 33). A three-factor structure was confirmed and showed the best fit compared to previously proposed models with a cumulative explained variance of 59%. The Portuguese SACS exhibited adequate internal consistency for both the full-scale and subscales. The highest mean score was in the pragmatic attitude domain (20.60; SD = 3.37). A negative correlation was observed between the critical attitude domain and both age and years of experience (p < 0.05). Conclusion: A three-factor structure was confirmed and showed the best fit compared to previously proposed models. The Portuguese SACS showed excellent psychometric properties and is acceptable for assessing staff attitudes towards coercion.