Nurses' Moral Courage Scale（NMCS）を用いた精神科看護者の道徳的勇気測定尺度の開発

Development of a Moral Courage Scale for Psychiatric Nurses Based on the Nurses' Moral Courage Scale (NMCS)

要旨

　目的：精神科看護者の日本語版道徳的勇気測定尺度（Japanese version of Nurses' Moral Courage Scale for Psychiatric nurses：J-NMCSP）を作成し，信頼性・妥当性を検証する．

　方法：J-NMCSPを精神科看護者2,601名に対して実施した．構成概念妥当性を探索的因子分析にて検討し，モデルの適合度を確認的因子分析で確認した後，項目分析・信頼性の確認・妥当性の検討を行った．

　結果：探索的因子分析の結果示された4因子構造モデルにて高い適合度指標（GFI＝.903，AGFI＝.876，CFI＝.893，RMSEA＝.072，AIC＝1,100.539，BIC＝1,102.517）が確認された．J-NMCSP全体のCronbach's α係数は0.910であった．

　結論：J-NMCSPは精神科看護者を対象とした調査により構成概念妥当性・併存的妥当性・内的整合性が確認された．

　Objective: To develop a Japanese version of Nurses' Moral Courage Scale for Psychiatric nurses (J-NMCSP) and to assess its reliability and validity.

　Methods: This study included 2,601 psychiatric nurses who were administered the J-NMCSP, which was developed through a translation process. The construct validity was evaluated through an exploratory factor analysis, whereas the model fit was confirmed through a confirmatory factor analysis. Subsequently, item analysis, reliability confirmation, and validity were performed.

　Result: The results of the exploratory factor analysis showed that the four-factor model had high goodness-of-fit indices (GFI=.903, AGFI=.876, CFI=.893, RMSEA=.072, AIC=1,100.539, BIC=1,102.517), and Cronbach's alpha coefficient for the entire J-NMCSP was 0.910. Moreover, Cronbach's alpha coefficient for the entire J-NMCSP was 0.910.

　Conclusion: The J-NMCSP has been shown to be an effective and reliable scale for measuring the moral courage of Japanese psychiatric nurses. However, since the factor structure of the JNMCSP differs from that of the original untranslated version, caution should be taken when conducting international comparisons.