Does Microscope Assistance in Cold Steel Tonsillectomy Reduce the Risk of Postoperative Hemorrhage? Results of a Prospective Cohort Study

Table 5

PTH rates broken down by the N-/R-classification and age groups.

Age									Total
Class	N0	N1	R0	R1	N0	N1	R0	R1
0–10	1 (0.15%)	0	0	1 (0.15%)	0	0	0	0	2 (0.23%)
11–18	0	5 (0.73%)	1 (0.15%)	3 (0.44%)	0	1 (0.12%)	0	0	5 (0.58%)
19–65	3 (0.44%)	16 (2.34%)	1 (0.15%)	7 (1.02%)	1 (0.55%)	5 (2.75%)	0	1 (0.12%)	34 (3.93%)
>65	0	2 (0.29%)	0	0	0	0	0	1 (0.12%)	3 (0.35%)
Total	4 (0.59%)	23 (3.37%)	2 (0.29%)	11 (1.61%)	1 (0.55%)	6 (3.30%)	0	2 (1.10%)	49 (5.66%)