Programmes
Faculty & Research
Community
Oxford
The School

Dean's Seminar - Felix Reed-Tsochas

Time: 
12:15 to 13:30
, 1 Nov 2017
Add to Calendar
Location: 
Rhodes Trust Lecture Theatre
Address: 
Park End Street
Facilitator: 
Peter Tufano, Peter Moores Dean and Professor of Finance
For any enquiries:

From patient co-presence networks in hospitals to health outcomes: social and biological mechanisms

Dr Felix Reed-Tsochas talked about his research on complex systems in health care. He presented his recently published work on the impact of social networks in chemotherapy (see abstract below), as well as research based on similar data which investigates pathways for infectious disease transmission.

Abstract

Chemotherapy is often administered in openly designed hospital wards, where there is the possibility of social influence on health between patients. Previous research has found evidence that cancer patients’ health is impacted by social relationships; however, social influence has not been examined in patients while receiving treatment in a chemotherapy ward. In the current paper, we investigate the influence of co-presence vis-a`-vis cancer patient outcomes on 5-year survival in a chemotherapy ward.

Using data on 4,691 cancer patients undergoing chemotherapy in Oxfordshire, United Kingdom, we construct a network of patients where edges between patients equal the Jaccard index of co-presence in the ward. Patients averaged 59.8 years of age, and 44% were male. We count the total Jaccard-weighted person-hours of overlap with focal patients’ immediate neighbors or those two nodes away who finish their chemotherapy cycle and survive 5 years or die within 5 years. Generalized estimating equations were used to evaluate the effect of neighbors’ outcomes on focal patient’s 5-year mortality.

Each 1,000-unit increase in Jaccard-weighted person-hours (e.g., a hypothetical focal patient in the ward for 50 hours co-present with 100 patients, all with Jaccard indices of 0.2) with a patient dying 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 Jaccard-weighted person-hours 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, which may need to be taken into account in chemotherapy delivery.

Please note that Dean's Seminars are only open to members of Oxford Saïd's research community.

Speakers

Felix Reed-Tsochas View profile

Felix is James Martin Lecturer in Complex Systems at Saïd Business School, and a Fellow of Green Templeton College. He is a Director of the Complexity Economics Programme at INET Oxford, and a founding Co-Director of the CABDyN Complexity Centre.
Sun Mon Tue Wed Thu Fri Sat
 
 
 
 
1
 
2
 
3
 
4
 
5
 
6
 
7
 
8
 
9
 
10
 
11
 
12
 
13
 
14
 
15
 
16
 
17
 
18
 
19
 
20
 
21
 
22
 
23
 
24
 
25
 
26
 
27
 
28
 
 
 
 
Past seminars

Each Dean's Seminar is recorded and the videos are made available through our 'Summaries & videos' page.