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2. SAS and SPSS macros to calculate standardized Cronbach's alpha using the upper bound of the phi coefficient for dichotomous items. Sun W; Chou CP; Stacy AW; Ma H; Unger J; Gallaher P Behav Res Methods; 2007 Feb; 39(1):71-81. PubMed ID: 17552473 [TBL] [Abstract][Full Text] [Related]
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