柏格平衡量表應用於慢性思覺失調症患者之信度與效度

Reliability and Validity of the Berg Balance Scale in Patients with Schizophrenia

目的：本研究旨在驗證柏格平衡量表(Berg Balance Scale, BBS)應用於慢性思覺失調症患者的信度(內在一致性)與效度(收斂效度與已知群體效度)，以確保其在評估患者平衡能力的適用性與可靠性。方法：研究對象為61名慢性思覺失調症患者，接受三項工具評估：BBS，起走測試(Timed Up and Go test)、以及簡易心智狀態量表。針對BBS進行內在一致性與效度的驗證。結果：BBS在慢性思覺失調症患者中表現出良好的內在一致性(Cronbach'sα=0.72)。BBS分數與患者年齡呈中度負相關(r=-0.40)，與起走測試結果之間存在較強的中度負相關(r=-0.66)。此外，BBS分數能夠區辨患者是否發生過跌倒。結論：本研究結果顯示BBS具有合適的內在一致性信度以及收斂效度與已知群體效度，初步支持BBS應用於慢性思覺失調症患者之平衡能力評估。

Objectives. This study aimed to validate the effectiveness of the Berg Balance Scale (BBS) in assessing balance abilities in patients with chronic schizophrenia, emphasizing its reliability (internal consistency) and validity (convergent validity and known-group validity).
Methods. Sixty-one patients with chronic schizophrenia were recruited to assess three measures: the BBS, the Timed Up and Go test, and the Mini-Mental State Examination. The internal consistency and validity of the BBS were examined.
Results. The results appeared that the BBS demonstrated satisfactory internal consistency among patients with chronic schizophrenia (Cronbach'sα=0.72). The BBS scores exhibited a moderate negative correlation with patient age (r=-0.40) and a strong moderate correlation with the Timed Up and Go test results (r=-0.66). Furthermore, the BBS scores effectively differentiated patients with a history of falls.
Conclusion. The findings of this study support the reliability and validity of the BBS in assessing balance abilities among patients with chronic schizophrenia, endorsing its potential utility in clinical practice.