Research Article

Risk Balancing of Cold Ischemic Time against Night Shift Surgery Possibly Reduces Rates of Reoperation and Perioperative Graft Loss

Table 1

Univariable binary regression of circadian risk development for binary output variables. Shown are the results of univariable regression analyses of the circadian risk development per 3-hour day and night shift intervals for the investigated endpoints hospital discharge on dialysis [Yes/No], delayed graft function [Yes/No], early postoperative graft loss [Yes/No], postoperative graft loss due to surgical reasons [Yes/No], and reoperation [Yes/No]. Values of calculated odds ratios of each time interval were plotted on radar-plots to visualize the circadian risk developments of each investigated endpoint.

3 h intervalNoYes% Univariable binary regressionCircadian risk development
OR95% CI

Reoperation12 AM–3 AM 811515.60.6570.8780.496–1.5550.653
3 AM–6 AM 178320.0562.3010.980–5.4020.070
6 AM–9 AM 1171712.70.1400.6700.394–1.1400.124
9 AM–12 PM (2293814.20.1400.7510.514–1.0980.131
12 AM–3 PM 2264817.50.9041.0220.718–1.4540.904
3 PM–6 PM 1363319.50.4061.1910.789–1.7980.412
6 PM–9 PM 1332415.30.4820.8470.534–1.3440.475
9 PM–12 AM 1053525.00.0111.7101.131–2.5880.014

3 h intervalNoYes%Univariable binary regressionCircadian risk development
OR95% CI

Perioperative graft loss12 AM–3 AM 9422.10.2690.4470.107–1.8620.211
3 AM–6 AM 21416.00.0084.4301.467–13.380.024
6 AM–9 AM 12953.70.7070.8360.327–2.1330.701
9 AM–12 PM 25983.00.2240.6230.291–1.3350.200
12 PM–3 PM 262124.40.9841.0070.523–1.9370.984
3 PM–6 PM 159105.90.2891.4650.724–2.9650.307
6 PM–9 PM 15163.80.7250.8560.361–2.0330.720
9 PM–12 AM 13285.70.4071.3860.641–2.9970.423

3 h intervalNoYes%Univariable binary regressionCircadian risk development
OR95% CI

Perioperative graft loss due to surgical reasons12 AM–3 AM 95110.6160.5970.079–4.4960.588
3 AM–6 AM 223120.0019.2422.537–33.670.007
6 AM–9 AM 13132.20.5831.4130.411–4.8630.598
9 AM–12 PM 26520.70.2050.3880.090–1.6770.151
12 PM–3 PM 26951.80.8131.1300.410–3.1130.815
3 PM–6 PM 16631.80.9021.0800.315–3.7080.903
6 PM–9 PM 157000.9960.0000.0000.018
9 PM–12 AM 13642.90.2491.9130.635–5.7690.281

3 h intervalNoYes%Univariable binary regressionCircadian risk development
OR95% CI

Delayed graft function12 AM–3 AM 482534.20.4411.2200.735–2.0260.445
3 AM–6 AM 12320.00.3880.5710.160–2.0400.364
6 AM–9 AM 683131.30.8121.0560.672–1.6600.812
9 AM–12 PM 1374926.30.1880.7830.544–1.1270.183
12 PM–3 PM 1216033.10.3451.1840.834–1.6810.347
3 PM–6 PM 823026.80.3890.8220.526–1.2840.384
6 PM–9 PM 762927.60.5270.8630.548–1.3610.524
9 PM–12 AM 573437.40.1211.4290.910–2.2460.126

3 h intervalNoYes%Univariable binary regressionCircadian risk development
OR95% CI

Discharge on dialysis12 AM–3 AM 7345.10.1190.4410.158–1.2330.081
3 AM–6 AM 15421.10.1452.3050.750–7.0820.178
6 AM–9 AM 991513.20.3421.3290.739–2.3890.354
9 AM–12 PM 1862110.10.8180.9420.568–1.5640.817
12 PM–3 PM 181199.50.5770.8610.510–1.4560.572
3 PM–6 PM 1121511.80.6291.1550.645–2.0680.633
6 PM–9 PM 10597.90.3230.6980.342–1.4250.303
9 PM–12 AM )911514.20.2081.4610.810–2.6340.223