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Statistical Power in Longitudinal Network Studies

Author

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  • Christoph Stadtfeld
  • Tom A. B. Snijders
  • Christian Steglich
  • Marijtje van Duijn

Abstract

Longitudinal social network studies can easily suffer from insufficient statistical power. Studies that simultaneously investigate change of network ties and change of nodal attributes (selection and influence studies) are particularly at risk because the number of nodal observations is typically much lower than the number of observed tie variables. This article presents a simulation-based procedure to evaluate statistical power of longitudinal social network studies in which stochastic actor-oriented models are to be applied. Two detailed case studies illustrate how statistical power is strongly affected by network size, number of data collection waves, effect sizes, missing data, and participant turnover. These issues should thus be explored in the design phase of longitudinal social network studies.

Suggested Citation

  • Christoph Stadtfeld & Tom A. B. Snijders & Christian Steglich & Marijtje van Duijn, 2020. "Statistical Power in Longitudinal Network Studies," Sociological Methods & Research, , vol. 49(4), pages 1103-1132, November.
    • Handle: RePEc:sae:somere:v:49:y:2020:i:4:p:1103-1132
    DOI: 10.1177/0049124118769113
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