遺伝看護実践能力尺度の信頼性・妥当性の検証

Verification of Reliability and Validity of Genetics Nursing Competency Scale

要旨

　目的：遺伝看護の実践能力を測定する尺度を開発し，信頼性と妥当性を検討した．

　方法：先行研究から遺伝看護実践能力尺度を作成した．調査1では内容的妥当性と表面的妥当性，調査2では対象者293名のデータで信頼性，併存的妥当性，既知集団妥当性の分析，モデル適合度の検定をおこなった．

　結果：内容的妥当性，表面的妥当性の検討により，6因子21項目の尺度が作成された．尺度全体のCronbach's α係数は .96であり，信頼性が確認された．既知集団妥当性では，遺伝医療・看護の勉強会参加経験「あり」群と「なし」群を比較し，1％水準で参加経験「あり」群の総得点が高かった．また6因子21項目の仮設モデルの適合度を確認的因子分析で検討し，容認できる整合性を認めた．

　結論：遺伝看護実践能力尺度21項目6因子構造を開発し，概ね信頼性と妥当性が確保できた．

　Aims: To develop a scale to measure genetics nurses' practical ability and to examine its reliability and validity.

　Methods: We developed a scale to measure genetics nursing competencies based on the previous research. The first survey assessed the content validity and surface validity, and the second survey assessed the reliability, coexistence validity, known-groups validity, and test of model suitability using data from 293 nurses.

　Results: A 21-item scale comprising six factors was developed by examining content validity and surface validity. Factor analysis showed that the Cronbach's α coefficient for the entire scale was 0.96, confirming its internal consistency. For known-groups validity, the “yes” and “no” groups' responses to the question about participation experience in study sessions for genetic medicine and nursing were compared; “yes” group with participation experience had a higher overall score (at 1% significance level). The fit factor of the six-factor, 21-item temporary model was examined in the confirmatory factor analysis, which showed acceptable consistency.

　Conclusions: This study developed and tested a scale to measure genetics nursing competencies, and there was a certain extent of validity and reliability.