Association between the number of balloon dilations performed and filter content
| No. of Dilations | Content in Filter (No., %) | ||
|---|---|---|---|
| No | Yes | Total | |
| 1 | 23 (60.5) | 15 (39.5) | 38 (100) |
| 2 | 41 (38) | 67 (62) | 108 (100) |
| ≥3 | 20 (36.4) | 35 (63.6) | 55 (100) |
| Total | 84 (41.8) | 117 (58.2) | 201 (100) |