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WHAT IS KNOWN ON THE SUBJECT?: Children and adolescents' mental health problems, such as autism spectrum disorder, anxiety disorder and attention-deficit hyperactivity disorder, are a global public health concern, and nurses require advanced expertise and skills to properly care for this population. There is a gap between the required competencies and the actual skills and knowledge of CAMHN practitioners. Previous studies suggest that educational interventions for nurses are necessary to enhance the quality of care for children and adolescents with mental health problems. However, the corresponding evaluation indicators have not been verified, making it difficult to determine the most effective methods. WHAT THIS PAPER ADDS TO EXISTING KNOWLEDGE?: The present study developed the two-factor (direct care for children and their family members and approach to the care environment) Clinical Competency Assessment Scale in Child and Adolescent Mental Health Nursing (CCAS-CAMHN). We demonstrated that the assessment scale was reliable and valid, based on its adequate internal consistency and temporal stability, the acceptable range of its model-fit indexes, and its good concurrent and divergent validity. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: The newly developed scale is useful for assessing nurses' competency and could help them identify their difficulties in CAMHN. The scale could contribute to the development of effective educational interventions to enhance the quality of care for children and adolescents with mental health problems.

ABSTRACT

INTRODUCTION: Caring for children and adolescents with mental health problems, such as autism spectrum disorder, anxiety disorder and attention-deficit hyperactivity disorder, requires expertise and skills. A quantitative clinical competency measurement tool in child and adolescent mental health nursing (CAMHN) is needed to evaluate the indicators of advanced expertise.

AIM

The aim of this study was to develop a clinical competency assessment scale in CAMHN and evaluate its psychometric properties.

METHOD

Scale items were derived from previous studies and adjusted based on cognitive interviews with five CAMHN experts. In total, 505 nurses in CAMHN from 29 hospitals in Japan participated in the self-administered survey. The scale's construct validity, criterion-related validity, internal consistency and test-retest reliability were assessed.

RESULTS

A two-factor (direct care for children and their family members and approach to the care environment) scale was constructed. A secondary structural model showed that a two-factor model fits best. The total score was significantly and positively correlated with excellence in nursing practice, amount of clinical experience and mental status. The overall scale exhibited good validity and reliability.

DISCUSSION

The scale is reliable and valid for assessing CAMHN clinical competency.

IMPLICATIONS FOR PRACTICE

The scale is useful for assessing nurses' competency and evaluating educational interventions' effectiveness for nurses.