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Table 2 Comparison of outcomes between pre- and post-intervention periods

From: Improving Emergency Department radiology transportation time: a successful implementation of lean methodology

   Intervention  
Variables   Pre n = 6186 Post n = 4879 P-value
Intervention related
 Transportation TAT (min) ≤10 1998 (32.3%) 3494 (71.6%) <0.0001
Mean (±SD) 22.89 ± 22.05 9.87 ± 15.05 <0.0001
Others
 Preliminary Report TAT (min) Mean (±SD) 31.16 ± 26.87 42.63 ± 33.02 <0.0001
 Study processing to preliminary report time (min) Mean (±SD) 54.04 ± 34.72 52.50 ± 35.43 0.02
 Length of stay (hrs) Mean (±SD) 4.57 ± 10.43 3.65 ± 5.17 <0.0001