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How to reduce the number of rating scale items without predictability loss?

Author

Listed:
  • W. W. Koczkodaj

    (Laurentian University)

  • T. Kakiashvili

    (Sudbury Therapy)

  • A. Szymańska

    (UKSW University)

  • J. Montero-Marin

    (University of Zaragoza)

  • R. Araya

    (London School of Hygiene and Tropical Medicine)

  • J. Garcia-Campayo

    (University of Zaragoza)

  • K. Rutkowski

    (Jagiellonian University)

  • D. Strzałka

    (Rzeszów University of Technology)

Abstract

Rating scales are used to elicit data about qualitative entities (e.g., research collaboration). This study presents an innovative method for reducing the number of rating scale items without the predictability loss. The “area under the receiver operator curve method” (AUC ROC) is used. The presented method has reduced the number of rating scale items (variables) to 28.57% (from 21 to 6) making over 70% of collected data unnecessary. Results have been verified by two methods of analysis: Graded Response Model (GRM) and Confirmatory Factor Analysis (CFA). GRM revealed that the new method differentiates observations of high and middle scores. CFA proved that the reliability of the rating scale has not deteriorated by the scale item reduction. Both statistical analysis evidenced usefulness of the AUC ROC reduction method.

Suggested Citation

  • W. W. Koczkodaj & T. Kakiashvili & A. Szymańska & J. Montero-Marin & R. Araya & J. Garcia-Campayo & K. Rutkowski & D. Strzałka, 2017. "How to reduce the number of rating scale items without predictability loss?," Scientometrics, Springer;Akadémiai Kiadó, vol. 111(2), pages 581-593, May.
    • Handle: RePEc:spr:scient:v:111:y:2017:i:2:d:10.1007_s11192-017-2283-4
    DOI: 10.1007/s11192-017-2283-4
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    References listed on IDEAS

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    1. Gualberto Buela-Casal & Izabela Zych, 2012. "What do the scientists think about the impact factor?," Scientometrics, Springer;Akadémiai Kiadó, vol. 92(2), pages 281-292, August.
    2. Rizopoulos, Dimitris, 2006. "ltm: An R Package for Latent Variable Modeling and Item Response Analysis," Journal of Statistical Software, Foundation for Open Access Statistics, vol. 17(i05).
    3. Philippe Moigne & Pascal Ragouet, 2012. "Science as instrumentation. The case for psychiatric rating scales," Scientometrics, Springer;Akadémiai Kiadó, vol. 93(2), pages 329-349, November.
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    Cited by:

    1. Waldemar W. Koczkodaj & Mirosław Mazurek & Dominik Strzałka & Alicja Wolny-Dominiak & Marc Woodbury-Smith, 2019. "Electronic Health Record Breaches as Social Indicators," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 141(2), pages 861-871, January.

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