Display Settings:

Format

Send to:

Choose Destination
We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
    Behav Res Methods. 2007 Aug;39(3):527-30.

    CTTITEM: SAS macro and SPSS syntax for classical item analysis.

    Source

    Pennsylvania State University, University Park, Pennsylvania 16802, USA. puiwa@psu.edu

    Abstract

    This article describes the functions of a SAS macro and an SPSS syntax that produce common statistics for conventional item analysis including Cronbach's alpha, item difficulty index (p-value or item mean), and item discrimination indices (D-index, point biserial and biserial correlations for dichotomous items and item-total correlation for polytomous items). These programs represent an improvement over the existing SAS and SPSS item analysis routines in terms of completeness and user-friendliness. To promote routine evaluations of item qualities in instrument development of any scale, the programs are available at no charge for interested users. The program codes along with a brief user's manual that contains instructions and examples are downloadable from suen.ed.psu.edu/-pwlei/plei.htm.

    PMID:
    17958163
    [PubMed - indexed for MEDLINE]

    LinkOut - more resources

    Full Text Sources

    Other Literature Sources

      Supplemental Content

      Save items

      Recent activity

      Your browsing activity is empty.

      Activity recording is turned off.

      Turn recording back on

      See more...
      Write to the Help Desk