不妊治療を受けるカップルのパートナーシップ尺度の開発 信頼性と妥当性の検討

Development and Testing of a Partnership Scale for Couples Undergoing Fertility Treatment

要旨

　目的：不妊治療を受けるカップルのパートナーシップ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：パートナーシップ尺度原案40項目は概念分析とインタビューデータを基に作成した．調査1で対象者535名のデータを基に探索的因子分析と確認的因子分析を行い，調査2で再テストにより110名のデータで安定性を確認した．

　結果：因子分析の結果，【精神的サポート】【負担の理解】【治療上の協力】が抽出され，構成概念は支持された．基準関連妥当性の検討では，パートナーシップ尺度総得点はFertiQoL尺度得点，FertiQoL下位尺度「関係」の得点，パートナーとの関係満足度得点と正の相関が1％水準で認められた．クロンバックαは0.89であり，確認的因子分析で容認できる整合性を有していた．調査1と調査2の相関係数は0.71であった．

　結論：パートナーシップ尺度18項目3因子構造を開発し，基準関連妥当性および内的整合性と安定性の結果から高い妥当性と信頼性が確認された．

Abstract

　Aims: The purpose of this study was to develop and test the reliability and validity of the Couple's Partnership during Fertility Treatment Scale.

　Methods: Interview data and concept analysis yielded a draft of 40 items called the partnership scale used in two surveys. The first survey conducted confirmatory factor analysis and exploratory factor analysis based on data from a purposive sample of 535 patients. The second survey confirmed the stability of the data from 110 patients by test-retest.

　Results: Construct validity was tested with exploratory factor analysis and resulted in 18 items with a 3-factor solution: "emotional support," "understanding the burden," and "cooperation with treatment. "The total score and subscale scores of the Partnership Scale showed excellent internal consistency. Sufficient criterion-related validity was confirmed by the FertiQoL tool, the relational subscale of the FertiQoL tool, and the relationship satisfaction score with a 1% level of significance. In addition, confirmatory factor analyses indicated that a 3-factor model for the 18-item Partnership Scale was valid. The second survey tested test-retest reliability for 110 patients. The result of Spearman's correlation coefficients resulted in a total score that was acceptable(r_s=0.71).

　Conclusions: This study developed and tested a questionnaire to measure a couple's partnership while undergoing fertility treatment. As a result, the stability and internal consistency and criterionrelated validity were high. Therefore, high reliability and validity has been confirmed.