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. 2005 Jun;26(6):1420–1424.

TABLE 4:

Comparison of safety and efficacy results

Previous Device Procedure Success
Complications
No. P Valuea No. P Valuea
0 (n = 337) 320 (95) NA 2 (0.6) NA
1 (n = 90) 88 (98) >.05 0 >.05
2 (n = 34) 31 (91) >.05 1 (2.9) >.05
3 (n = 9) 7 (78) .0256b 0 >.05c
4 (n = 4) 3 (75) >.05b 0 >.05c
5 (n = 1) 1 (100) >.05b 0 >.05c

Note.—Data in parentheses are percentages. NA = not applicable.

a

Compared with results for 0 previous procedures.

b

Groups with three to five procedures pooled, P = .0096.

c

Groups with three to five procedures pooled, P > .05.