Workshop in Biostatistics

M112 Alway Building, Medical Center

(next to the Dean's courtyard)

DATE: February 2, 2017
TIME: 1:30 - 2:50 pm
TITLE: How many units of blood will the Stanford Hospital need tomorrow?

Saurabh Gombar, Allison Jeanne Zemek, Dept of Pathology, Stanford
Leying Guan, Xiaoying Tian, Dept of Statistics, Stanford

Joint work with:
Tho Pham, Dept of Pathology, Stanford; Stanford Blood Center
Rob Tibshirani, Depts of Biomedical Data Science and Statistics, Stanford


Every day Stanford hospital (SHC) orders some number of units of platelets from the Stanford Blood Center (SBC). Although SBC collects these units daily from donors, the units are held in testing for first 2 days, after which they can be released and can only be used for the next 3 days, before they expire. Currently the number of units ordered by SHC is based on historical daily averages. While there is rarely a shortage, many units are wasted over the year. Using information that is available about the patients and planned procedures in the hospital, we have constructed a supervised learning model and an ordering scheme that on backtesting  reduces the number of units wasted by two-thirds without any shortages.  This will potentially allow for optimized SBC donor collection strategy and SHC ordering strategy to drastically reduce the cost of wastage without compromising patient care. 

Suggested readings:

sec 6.2 of An Introduction To Statistical Learning , G. James et al.