中堅看護師のキャリア・プラトー測定尺度の開発とその信頼性・妥当性の検討

Development of a Career Plateau Measurement Scale for Mid-career Nurses and Examining its Reliability and Validity

要旨

　目的：中堅看護師のキャリア・プラトーの測定尺度を開発し，信頼性と妥当性を検討する．

　方法：先行研究に基づき，中堅看護師のキャリア・プラトー測定尺度原案を作成した．近畿圏内500床以上の9病院に勤務する臨床経験3年以上25年までの役職を持たない看護師1,409名を対象として，質問紙調査を実施し，信頼性と妥当性を検証した．

　結果：有効回答は497名（35.3％）であった．主因子法，プロマックス回転による探索的因子分析の結果，26項目4因子が抽出された．さらに，確証的因子分析により探索的因子分析で得られた仮説モデルの適合度が確認された．信頼係数は，クロンバックα係数 .94，再テスト法の級内相関係数は .82，基準関連妥当性の特性的自己効力感尺度および病院に勤務する看護師の職務満足測定尺度との相関係数は，それぞれ−.47と−.63であった．

　結論：中堅看護師のキャリア・プラトーの測定尺度は信頼性と妥当性が検証された．

　Objective: This study develops a scale for measuring career plateau in mid-career nurses and examines its reliability and validity.

　Method: A draft of a career plateau measurement scale for mid-career nurses was developed based on previous research. A questionnaire survey was administered to 1,409 non-positioned nurses with between 3 and 25 years of clinical experience working at 9 hospitals with 500 or more beds in the Kinki region, and the reliability and validity of the survey were verified.

　Results: Valid responses were received from 497 respondents (35.3%). Exploratory factor analysis using the main factor method and promax rotation yielded 26 items and 4 factors. Furthermore, confirmatory factor analysis confirmed the robustness of the hypothesized model obtained in the exploratory factor analysis. The Cronbach's alpha coefficient for scale reliability was .94; the intraclass correlation coefficient for the test—retest method was .82; and the correlation coefficients with the trait self-efficacy scale of criterion-related validity and job satisfaction measurement scale for nurses working in a hospital were -.47 and -.63, respectively.

　Conclusion: A scale measuring career plateau in mid-career nurses was verified for reliability and validity.