Table 2. Lifetime frequency of 12 NSSI behaviors assessed by the ISAS.
| NSSI Behaviors | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| cutting | burning | scratching | banging | biting | carving | wound picking | needle-sticking | pinching | hair pulling | Rubbing a | Chemicals b | |
| N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | |
| <5 | 3 (17.6) | 5 (29.4) | 15 (88.2) | 11 (64.7) | 12 (70.6) | 10 (58.8) | 12 (70.6) | 2 (11.8) | 7 (41.2) | 10 (58.8) | 16 (94.1) | 15 (88.2) |
| 5–50 | 6 (35.3) | 7 (41.2) | 1 (5.9) | 4 (23.5) | 3 (17.6) | 3 (17.6) | 3 (17.6) | 9 (52.9) | 4 (23.5) | 3 (17.6) | 1 (5.9) | 1 (5.9) |
| 51–100 | 1 (5.9) | 2 (11.8) | 0 | 0 | 0 | 2 (11.8) | 2 (11.8) | 2 (11.8) | 2 (11.8) | 1 (5.9) | 0 | 0 |
| 101–250 | 2 (11.8) | 1 (5.9) | 1 (5.9) | 0 | 0 | 0 | 0 | 1 (5.9) | 2 (11.8) | 2 (11.8) | 0 | 0 |
| >250 | 5 (29.4) | 2 (11.8) | 0 | 2 (11.8) | 2 (11.8) | 2 (11.8) | 0 | 3 (17.6) | 2 (11.8) | 1 (5.9) | 0 | 1 (5.9) |
| Total > 5 | 14 (82.4) | 12 (70.6) | 2 (11.8) | 6 (35.3) | 5 (29.4) | 7 (41.2) | 5 (29.4) | 15 (88.2) | 10 (58.8) | 7 (41.2) | 1 (5.9) | 2 (11.8) |
Notes. BPD subjects estimated the number of times they have engaged NSSI behaviors. The total score was grouped in different categories (from less than 5 times to more than 250 times). Additionally the lifetime frequency above 5 for each NSSI type was computed.
a Rubbing skin against rough surfaces
b Swallowing chemicals