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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Ann Surg. 2014 Oct;260(4):583–591. doi: 10.1097/SLA.0000000000000923

Figure 4. Readmission by hospital volume.

Figure 4

Relationship between LOSa from initial hospitalization and readmission rate at (A) 7 days (p<0.0001) and (B) 30 days (p<0.0001) for the entire cohort, or for just those patients discharged from a surgical service (C, D). The associated fitted robust linear regression is shown as is the R2 correlation value for each relationship.