An analysis of mobile whole blood collection labor efficiency

作者：Rose William N; Dayton Paula J; Raife Thomas J^*

来源：Transfusion, 2011, 51(7): 1609-1612.

DOI：10.1111/j.1537-2995.2011.03221.x

BACKGROUND: Labor efficiency is desirable in mobile blood collection. There are few published data on labor efficiency. The variability in the labor efficiency of mobile whole blood collections was analyzed. We determined to improve our labor efficiency using lean manufacturing principles.
STUDY DESIGN AND METHODS: Workflow changes in mobile collections were implemented with the goal of minimizing labor expenditures. To measure success, data on labor efficiency measured by units/hour/full-time equivalent (FTE) were collected. The labor efficiency in a 6-month period before the implementation of changes, and in months 1 to 6 and 7 to 12 after implementation was analyzed and compared.
RESULTS: Labor efficiency in the 6-month period preceding implementation was 1.06 +/- 0.4 units collected/hour/FTE. In months 1 to 6, labor efficiency declined slightly to 0.92 +/- 0.4 units collected/hour/FTE (p = 0.016 vs. preimplementation). In months 7 to 12, the mean labor efficiency returned to preimplementation levels of 1.09 +/- 0.4 units collected/hour/FTE. Regression analysis correlating labor efficiency with total units collected per drive revealed a strong correlation (R(2) = 0.48 for the aggregate data from all three periods), indicating that nearly half of labor efficiency was associated with drive size. The lean-based changes in workflow were subjectively favored by employees and donors.
CONCLUSIONS: The labor efficiency of our mobile whole blood drives is strongly influenced by size. Larger drives are more efficient, with diminishing returns above 40 units collected. Lean-based workflow changes were positively received by employees and donors.