Economies of scale in blood banking: a study based on data envelopment analysis

Area of Science:

• Healthcare Management
• Operations Research
• Blood Banking

Background:

• Consolidating blood banks into large regional centers is often proposed to leverage economies of scale.
• However, empirical evidence supporting this hypothesis is limited.
• This study investigates the economies of scale in US blood centers.

Purpose of the Study:

• To test the economies of scale hypothesis in a sample of US blood centers.
• To determine the operational efficiency and scale characteristics of these centers.
• To explore the relationship between efficiency and service area demographics.

Main Methods:

• Input-oriented Data Envelopment Analysis (DEA) was employed.
• Technical efficiency scores were calculated for 71 blood centers.
• Centers were classified as operating under increasing returns to scale (IRS), constant returns to scale (CRS), or decreasing returns to scale (DRS).

Main Results:

• The scale of operations varied significantly, from 7,270 to 275,500 red blood cell (RBC) units annually.
• Most centers (55%) operated under IRS, while 37% operated under DRS.
• Efficiency scores were found to be independent of the demographic and socioeconomic characteristics of the service areas.

Conclusions:

• For blood centers within the studied size range, operational expansion beyond a specific threshold results in decreasing returns to scale.
• This suggests that simply increasing the size of blood centers may not lead to improved efficiency and could potentially decrease it.