Social Influence on 5-Year Survival in a Longitudinal Chemotherapy Ward Co-Presence Network

Network Science 5 (3): 308–327, 2017

20 Pages Posted: 17 Feb 2018

See all articles by Jeffrey Lienert

Jeffrey Lienert

National Institutes of Health (NIH) - National Human Genome Research Institute; University of Oxford - CABDyN Complexity Centre

Christopher Steven Marcum

National Institutes of Health (NIH) - National Human Genome Research Institute

John M Finney

Government of the United Kingdom - Oxford University Hospitals NHS Foundation Trust

Felix Reed-Tsochas

University of Oxford - Said Business School

Laura Koehly

National Institutes of Health (NIH) - National Human Genome Research Institute

Date Written: 2017

Abstract

Chemotherapy is often administered in openly designed hospital wards, where the possibility of patient–patient social influence on health exists. Previous research found that social relationships influence cancer patient’s health; however, we have yet to understand social influence among patients receiving chemotherapy in the hospital. We investigate the influence of co-presence in a chemotherapy ward. We use data on 4,691 cancer patients undergoing chemotherapy in Oxfordshire, United Kingdom who average 59.8 years of age, and 44% are Male. We construct a network of patients where edges exist when patients are co-present in the ward, weighted by both patients’ time in the ward. Social influence is based on total weighted co-presence with focal patients’ immediate neighbors, considering neighbors’ 5-year mortality. Generalized estimating equations evaluated the effect of neighbors’ 5-year mortality on focal patient’s 5-year mortality. Each 1,000-unit increase in weighted co-presence with a patient who dies within 5 years increases a patient’s mortality odds by 42% (β = 0.357, CI:0.204,0.510). Each 1,000-unit increase in co-presence with a patient surviving 5 years reduces a patient’s odds of dying by 30% (β = −0.344, CI:−0.538,0.149). Our results suggest that social influence occurs in chemotherapy wards, and thus may need to be considered in chemotherapy delivery.

Keywords: Medicine, Public Health, Chemotherapy, Longitudinal Network, Communal Coping, Generalized Estimating Equation, Jaccard Index, Administrative Data

Suggested Citation

Lienert, Jeffrey and Marcum, Christopher Steven and Finney, John M and Reed-Tsochas, Felix and Koehly, Laura, Social Influence on 5-Year Survival in a Longitudinal Chemotherapy Ward Co-Presence Network (2017). Network Science 5 (3): 308–327, 2017, Available at SSRN: https://ssrn.com/abstract=3119085

Jeffrey Lienert (Contact Author)

National Institutes of Health (NIH) - National Human Genome Research Institute ( email )

Building 29, Room $a56
49 Convent Dr, MSC 4472
Bethesda, MD 20892
United States

University of Oxford - CABDyN Complexity Centre ( email )

Park End Street
Oxford, OX1 1HP
United Kingdom

Christopher Steven Marcum

National Institutes of Health (NIH) - National Human Genome Research Institute ( email )

Building 29, Room $a56
49 Convent Dr, MSC 4472
Bethesda, MD 20892
United States

John M Finney

Government of the United Kingdom - Oxford University Hospitals NHS Foundation Trust ( email )

Headley Way
Headington
Oxford, OX3 9DU
United Kingdom

Felix Reed-Tsochas

University of Oxford - Said Business School ( email )

Park End Street
Oxford, OX1 1HP
Great Britain

HOME PAGE: http://www.sbs.ox.ac.uk/community/people/felix-reed-tsochas

Laura Koehly

National Institutes of Health (NIH) - National Human Genome Research Institute ( email )

Building 29, Room $a56
49 Convent Dr, MSC 4472
Bethesda, MD 20892
United States

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