Date of Conferral

4-30-2026

Degree

Doctor of Nursing Practice (DNP)

School

Nursing

Advisor

Theresa Parenteau

Abstract

In outpatient mental health settings, inconsistent use of the Patient Health Questionnaire-9 (PHQ-9) due to gaps in knowledge and lack of standardized training can lead to missed opportunities for early identification of depression and delayed treatment. Mental health nurses play a key role in screening and early intervention, underscoring the criticality of this role in practice. The Doctor of Nursing Practice (DNP) project explored whether a structured PHQ-9 staff education program could improve staff knowledge compared to baseline practice. The project involved using an intervention-based quality improvement design to enhance staff knowledge of administering and interpreting the PHQ-9 screening tool. Descriptive statistical analysis was conducted using pretest and posttest scores from eight participants. Mean scores and percentages were calculated to evaluate postintervention changes in participants’ knowledge, understanding, and appropriate use of the PHQ-9. Findings demonstrated substantial improvement, as the mean posttest score was notably higher than the pretest score, indicating enhanced knowledge following the educational intervention. These results indicate targeted staff education enhanced understanding and promoted consistent use of standardized screening tools. Key outcomes include development and implementation of a structured training program and evaluation tools. Structured PHQ-9 education improved staff knowledge, supports consistent evidence-based screening, and facilitates early identification of depression. Ongoing training is recommended to sustain competence and improve screening practices. Standardized screening promotes mental health equity by ensuring consistent and culturally sensitive care for all patients.

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