Table 5: Postoperative complications classified according to Clavien-Dindo.

Minor complicationsMajor complications
GradeIII(I + II)IIIaIIIb(IIIa + IIIb)

Early compl.
 Age < 7027 (9.7%)34 (12.2%)61 (21.9%)7 (2.5%)7 (2.5%)14 (5.0%)
 Age ≥ 7016 (12.4%)47 (36.4%)63 (48.8%)5 (3.9%)2 (1.6%)7 (5.4%)
value0.796<0.001<0.0010.7960.9671

Late compl.
 Age < 703 (1.1%)12 (4.3%)15 (5.4%)4 (1.4%)3 (1.1%)7 (2.5%)
 Age ≥ 701 (0.8%)12 (9.3%)13 (10.1%)0 (0.0%)1 (0.8%)1 (0.8%)
value10.2720.2810.74910.796

Early compl.: early complications from leaving the OR until 72 hrs after discharge from hospital; late compl.: late complications occurring from 72 hrs until 30 days after discharge from hospital.
Statistical test: = chi-squared test; = Fischer’s exact test.