Table 2. Status of Gliadel placement.

Item	Category	n	%
Total		558	100.0
Number of Gliadel wafers placed	1	4	0.7
	2	15	2.7
	3	24	4.3
	4	33	5.9
	5*	31	5.6
	6	47	8.4
	7	32	5.7
	8	372	66.7
	Mean ± SD	6.9 ± 1.8
	Median (range)	8.0 (1–8)
Second placement of Gliadel	Absent	555	99.5
	Present	3	0.5

*The number of Gliadel wafers placed was 4.5 in one patient, but it was counted as 5 in the analysis.

SD: standard deviation.