日本語版Managing Uncertainty in Illness Scale-Family Member Form（病気に関する不確かさ尺度-家族用）の信頼性および妥当性の検討

Investigation of the Reliability and Validity of the Japanese Version of the Managing Uncertainty in Illness Scale-Family Member Form

要旨

　目的：日本語版“Managing Uncertainty in Illness Scale-Family Member form：MUIS-FM”（MUIS-FM-J）の信頼性および妥当性を検討する．

　方法：脳神経疾患で入院中の患者の家族204名を対象に調査を行った．調査用紙は，MUIS-FM-J，新版STAI状態-特性不安尺度（STAI），対象者の基本属性と家族の病気に関する認識で構成した．併存的妥当性はMUIS-FM-JとSTAIの状態不安との相関関係により確認した．構成概念妥当性は，主にMUIS-FM-Jの因子構造により確認し，対象者の病気に関する認識の違いによるMUIS-FM-Jの得点の差を算出して弁別性を確認した．

　結果：MUIS-FM-Jは原版同様の1因子構造で，Cronbachのα係数は0.91であった．MUIS-FM-J得点は，STAIの特性不安得点との相関係数がr=0.34，状態不安得点との相関係数がr=0.66と正の相関を示した．MUIS-FM-Jは，疾患の種類，発症後の日数，意識レベルや生活動作，現状の予測などにおいて有意な得点の差を認めた．

　結論：内的整合性および併存的妥当性，構成概念妥当性の結果から，本尺度は信頼性と妥当性を有すると判断した．

　Objective: To investigate the reliability and validity of the Japanese version of the Managing Uncertainty in Illness Scale-Family Member form (MUIS-FM-J).

　Methods: A questionnaire survey was distributed to 204 family members of patients hospitalized with cranial nerve disease. The contents comprised the MUIS-FM-J, the State-Trait Anxiety Inventory-Form JYZ (STAI), and basic subject attributes and recognition of a family member's illness. Concurrent validity was determined based on the correlation between the MUIS-FM-J and state anxiety, whereas construct validity was determined mainly using the factor structure of the MUIS-FM-J. Distinctiveness was determined by differences in MUIS-FM-J scores for subject recognition of a family member's illness.

　Results: The MUIS-FM-J was confirmed as having the same single-factor structure as the original version. Cronbach's alpha was 0.91. Positive correlations were obtained between the MUIS-FM-J score and trait anxiety (r＝0.34) and state anxiety (r＝0.66). MUIS-FM-J scores showed differences according to kind of disease, number of days since onset, levels of disturbance of consciousness and activities of daily living, predicted prognosis, and other variables.

　Conclusion: The present findings for internal consistency, concurrent validity and construct validity suggest that the MUIS-FM-J has reliability and validity.