Door Opening Reasons N Overall, N = 541 Pre vs Post Incision p-value2
Post, N = 271 Pre, N = 271
Anesthesiologist Breaks 52 0.00 (0.00, 0.06) 0.05 (0.00, 0.12) 0.00 (0.00, 0.00) <0.001
Unknown 2 1 1
Nurse Breaks 52 0.00 (0.00, 0.07) 0.06 (0.00, 0.10) 0.00 (0.00, 0.00) <0.001
Unknown 2 1 1
Surgical_Tech_Break_._Pre 52 0.13
0 46 (88%) 21 (81%) 25 (96%)
0.023809524 1 (1.9%) 1 (3.8%) 0 (0%)
0.043478261 1 (1.9%) 1 (3.8%) 0 (0%)
0.045454545 1 (1.9%) 1 (3.8%) 0 (0%)
0.0625 2 (3.8%) 2 (7.7%) 0 (0%)
0.090909091 1 (1.9%) 0 (0%) 1 (3.8%)
Unknown 2 1 1
Total Staff Breaks 52 0.06 (0.00, 0.13) 0.12 (0.09, 0.17) 0.00 (0.00, 0.02) <0.001
Unknown 2 1 1
Nurse Supply Breaks 52 0.23 (0.17, 0.29) 0.19 (0.13, 0.26) 0.25 (0.20, 0.30) 0.052
Unknown 2 1 1
Vendor Supplies Breaks 52 0.15 (0.05, 0.21) 0.19 (0.16, 0.25) 0.05 (0.01, 0.10) <0.001
Unknown 2 1 1
Assessing Patient Status/Surgery Start Time 52 0.10 (0.04, 0.21) 0.04 (0.00, 0.06) 0.21 (0.14, 0.27) <0.001
Unknown 2 1 1
Anesthesiologist Attending Assisting Resident 26 0.02 (0.00, 0.04) NA (NA, NA) 0.02 (0.00, 0.04)
Unknown 28 27 1
Hallway Door Openings 52 0.06 (0.00, 0.13) 0.00 (0.00, 0.03) 0.12 (0.08, 0.18) <0.001
Unknown 2 1 1
Case Irrelevant Discussion 52 0.00 (0.00, 0.06) 0.03 (0.00, 0.11) 0.00 (0.00, 0.04) 0.10
Unknown 2 1 1
Other (phone calls, C Arm Deliver, etc... 52 0.17 (0.10, 0.28) 0.18 (0.13, 0.29) 0.15 (0.09, 0.24) 0.19
Unknown 2 1 1
No Clear Reasons 52 0.00 (0.00, 0.10) 0.03 (0.00, 0.16) 0.00 (0.00, 0.09) 0.47
Unknown 2 1 1

1 Statistics presented: Median (IQR); n (%)

2 Statistical tests performed: Wilcoxon rank-sum test; Fisher's exact test