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Using organizational network analysis to plan cancer screening programs for vulnerable populations.

Rebecca Lobb1, Bobbi J Carothers, Aisha K Lofters

  • 1Rebecca Lobb is with the Department of Surgery, Division of Public Health Sciences, School of Medicine, and Bobbi J. Carothers is with the George Warren Brown School of Social Work, Center for Public Health Systems Science, Washington University, St Louis, MO. Rebecca Lobb is also with the Keenan Research Centre, Li Ka Shing Knowledge Institute, and Aisha K. Lofters is with the Department of Family and Community Medicine, St Michael's Hospital, Toronto, ON.

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Understanding cancer screening network structures is key to improving cancer screening for South Asians in Ontario. Identifying central organizations helps strengthen collaboration and referral pathways.

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Area of Science:

  • Public Health
  • Health Services Research
  • Social Network Analysis

Background:

  • Cancer screening rates vary significantly among different ethnic groups.
  • South Asians in the Peel region of Ontario face unique barriers to cancer screening.
  • Effective cancer screening programs rely on robust inter-organizational networks.

Purpose of the Study:

  • To analyze the network structure of organizations involved in cancer screening for South Asians in Peel, Ontario.
  • To identify key organizations and relationships within the cancer screening network.
  • To inform the development of targeted interventions to enhance cancer screening uptake.

Main Methods:

  • A network analytic approach was employed to study communication, collaboration, and referral networks.
  • Surveys were conducted with decision-makers, program managers, and staff from 22 organizations.
  • Network density, centralization, and node characteristics were evaluated.

Main Results:

  • Network density was comparable across communication (15%), collaboration (17%), and referral (19%) networks.
  • The collaboration network exhibited higher centralization (0.30) than the communication network (0.24).
  • Diverse organizations were identified as central nodes within the network structures.

Conclusions:

  • Specific organizations play a critical, sometimes unexpected, role in the South Asian cancer screening network.
  • Findings highlight opportunities to strengthen inter-organizational linkages and leverage existing ties for program improvement.
  • This network analysis provides a foundation for developing targeted interventions to improve cancer screening for the South Asian population.