戒菸服務自我效能量表－－精神衛生臨床專業人員版之中文版發展與信效度檢定

Validation of the Chinese-Version Self-Efficacy in Smoking Cessation Service Scale (SE-SCS) for Clinical Psychiatric Professionals

背景：台灣菸害防治法已正式執行，精神科護理人員提供相關戒菸服務將成為關注的議題，但護理人員於提供戒菸服務時，常經驗到挫折和沮喪，因此了解其自我效能為重要之議題，但目前台灣缺乏測量的工具以評估其自我效能的狀況。目的：本研究目的針對「戒菸服務自我效能量表—精神衛生臨床專業人員版」，進行量表中文版之信效度檢定。方法：本量表原為Johnson等（2009）發展，用於測量社區心理健康照護人員提供戒菸服務之自我效能。本量表採用「翻譯—反轉翻譯」方法進行中英文的雙次翻譯，並以台灣中、南部地區18歲以上現職精神專科醫院護理人員，共193位為研究對象進行施測，藉以檢定該中文版量表之內在一致性與再測信度，以及建構與同時效標效度。結果：研究結果為(1)Cronbach’s α為.85；(2)再測信度積差相關係數為 .65（p = .004）；(3)經探索性因素分析後，可解釋之總變異量為63.36%；(4)在效標關聯效度上，護理人員提供戒菸服務之自我效能與提供戒菸服務頻率（p < .001）與提供患者戒菸諮詢頻率（p < .001）皆呈顯著相關。結論：「戒菸服務自我效能量表—精神衛生臨床工作人員版」中文版具有良好的信、效度。由於本量表題數少，評估容易，在短時間內即可獲得臨床護理人員提供戒菸服務之自我效能之參考，頗值推廣；亦可作為評量戒菸訓練或在職教育成效的前後測工具。

Background: Smoking cessation has been an important issue of concern for Taiwan's psychiatric nurses since promulgation of the Tobacco Hazards Prevention Act. However, Taiwan has lacked a qualified tool to evaluate the selfefficacy of nurses in providing smoking cessation services.Purpose: The purpose of this study was to validate the Chinese version of the Self- Efficacy in Smoking Cessation Service Scale (SE-SCS).Methods: A back translation approach was used to develop the SE-SCS Chinese version. We enrolled 193 psychiatric nurses from two psychiatric centers in central and southern Taiwan to assess the reliability and validity of the Chinese version scale using internal consistency, test-retest, factor analysis, and concurrent criteria validity.Results: The reliability of the SE-SCS Chinese version was assessed as good (Cronbach's α = .85) and the Pearson correlation for total test-retest score was acceptable (r = .65, p = .004). Explanatory factor analysis revealed that one factor explained 63.4% of total variance. As to the criteria validity, frequency of smoking cessation service provision was the main criterion, with a correlation of 0.25－0.26. We identified a low, but significant correlation (p ＜ .001).Conclusion: The SE-SCS Chinese version appears to be a valid measure for assessing psychiatric nurse self-efficacy in providing smoking cessation services.