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Table 1 Unadjusted data comparing baseline characteristics between first and last calendar quarters for teaching hospitals

From: The impact of academic calendar cycle on coronary artery bypass outcomes: a comparison of teaching and non-teaching hospitals

Teaching hospitals (N = 698,942)
Academic cycle 1st quarter (July-Sept) 4th quarter (Apr-June) p
Number of cases 336,118(48.1%) 362,824(51.9%)  
Cases/year 33,611 ± 7,971 36,282 ± 8,612 <0.001§
Age in years 64.7 ± 11.0 65.0 ± 10.8 <0.001
Female* 97787(29.1%) 104120(28.7%) <0.001
Cost (x $1000) 77 ± 55 75 ± 55 <0.001
Length of Stay 8.52 ± 5.65 8.52 ± 5.46 0.99
Deyo score 2.97 ± 1.65 3.00 ± 1.65 <0.001
  1. 2 analysis was used for Female Gender. §Paired t-test was done for cases per quadmester per calendar year.