慢性病患常需要心理調適介入，本研究旨在探討「正向心理健康befriend-mindfulness-identity(BMI)學習方案」6小時團體輔導，對促進重症肌無力症患者正向心理健康、改善憂鬱的效果，採等組前、後測及追蹤測量實驗設計，方便取樣募集有團體輔導介入的實驗組、常規照護的對照組各14位，於介入前、後、追蹤期進行「心理健康BMI幸福感指標」問卷、病人健康狀況問卷PHQ-9共11題施測。結果顯示在identity認同自我價值意義向度，實驗組比對照組有顯著差異，且實驗組正向心理健康BMI總分、identity認同自我價值意義向度、mindfulness正念情緒平穩向度及PHQ-9憂鬱分數在後測、追蹤測量均達顯著改善，前測正向心理健康低落者(<21分)的後測、追蹤測量也達顯著改善。對照組則無變化。建議擴大試行並檢測對更多患者的效果。

Patients with chronic illness often need psychological intervention. The study evaluates the effect of a 6 hours group counseling based on the “promoting positive mental health BMI learning program” on positive mental health and depression among patients with myasthenia gravis (MG). With a pretest-posttest and follow-up equivalent group design, 28 adult MG patients were assigned into a treatment group (n=14) or a control group (n=14). Both groups completed the mental health BMI indicator and the PHQ-9 scale before and after the intervention. Compared to the control group, the treatment group improved significantly on the Identity dimension. Also, the treatment group showed significant improvement on the posttest and follow-up scores of mental health BMI indicators in the total, the Mindfulness dimension, the Identity dimension and the PHQ-9 scale. Participants with poor mental health (BMI<21) in the pre-test also demonstrated improvement in the post-test. The control group showed no significant difference in the pre-test and the post-test scores. Our results suggested that the program could be conducted with more MG patients to further evaluate its effect on positive mental health BMI and depression.