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The Effect of a Clinical and Translational Science Award Institute on the Ego Networks of Investigators at a Large Research University

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Kabo F, Mashour G. The Effect of a Clinical and Translational Science Award Institute on the Ego Networks of Investigators at a Large Research University. Oral presentation at 2017 SciTS Conference. Clearwater Beach, FL. Jun 13, 2017. Insights Through Network Analysis. Online at:

The goal of our study was to examine differences between investigators’ ego networks based on whether they consulted with the CTSA institute. Our study sample was investigators who submitted research proposals to external sponsors in the year 2006 (N = 2,161). We collected grant submissions data for the period 2002-2012 where the treatment was consultation with the CTSA institute in 2006. We created investigator networks based on grant proposal co-submissions and generated the ego network measure two-step reach (TSR) – number of nodes that can be reached within two steps, which assesses the importance of ‘weak’ ties (friends of friends) with respect to information and knowledge flows. The study sample had two groups: Group A (N = 176) interacted with the CTSA, and Group B (N = 1,985) had no interaction with the CTSA. We ran independent sample one-tailed t-tests to examine the hypothesis that Group A would have a greater increase in TSR over time. With 2005 as the baseline (pre-treatment), we analyzed change in TSR in the post-treatment years 2008, 2010, and 2012. In 2008 there was no significant difference between Group A and Group B (meanA – meanB = -4.50, p = .707). In 2010 Group A had a significantly larger increase in TSR (meanA – meanB = 23.33, p = .019). In 2012 Group A had a significantly much larger increase in TSR (meanA – meanB = 145.68 p < .001). The difference in TRS score between the two groups increased with time, suggesting the CTSA institute has significant medium- and long-term positive impacts on investigators’ ego networks. This has major implications for how collaboration patterns change at the individual and institutional levels. It also indicates potentially unidentified mechanisms by which the CTSA can have an impact on investigators’ research productivity, namely, through enlarging and enriching individuals’ grant-seeking ego networks.



Type of Publication:

Oral presentation


scits 2017 conference, presentation, CTSA, ego networks, investigators

Addresses these goal(s):

  • Provide institutional support for team science
  • Conduct research on/evaluate team science

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Resource created by Jane Hwang on 10/3/2017 5:36:40 PM.

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