NSSI + BPD | NSSI − BPD | Chi-squarea /t testb | df | p value | |
---|---|---|---|---|---|
Basics | |||||
Still lasting/current (n, %) | 32 (64 %) | 28 (56 %) | 0.667a | 1 | 0.414 |
Age of onset (mean ± SD) | 20.56 ± 6.36 | 17.5 ± 9.28 | −1.507b | 58 | 0.137 |
Duration (mean ± SD) | |||||
In months, current | 66.27 ± 87.61 | 105.8 ± 84.55 | 1.774b | 58 | 0.081 |
In months, ceased | 57.09 ± 77.49 | 59.58 ± 43.44 | 0.136b | 44 | 0.892 |
Each time in minutes | 20.04 ± 25.3 | 16.34 ± 15.8 | −0.878b | 98 | 0.382 |
Use of mental health services (n, %) | 50 (100 %) | 19 (38 %) | 44.928a | 1 | <0.001*** |
Talking about NSSI with (n, %) | |||||
Other than therapist | 17 (34 %) | 10 (20 %) | 2.486a | 2 | 0.088 |
Parents | 3 (6 %) | 1 (2 %) | 3.835a | 2 | 0.147 |
Open presentation (n, %) | 8 (16 %) | 5 (10 %) | 0.796a | 1 | 0.554 |
Reason for NSSI (n, %) | |||||
More attention | 1 (2 %) | 3 (6 %) | 1.203a | 2 | 0.548 |
Intense feeling | 47 (94 %) | 38 (76 %) | 5.943a | 2 | 0.051 |
Reason for interruption (each time) (n, %) | |||||
Feelings changed | 41 (82 %) | 42 (84 %) | 0.071a | 1 | 0.790 |
Bleeding | 20 (40 %) | 14 (28 %) | 1.604a | 1 | 0.205 |
Exhausted | 8 (16 %) | 15 (30 %) | 2.767a | 1 | 0.096 |
Caught | 8 (16 %) | 8 (16 %) | 0.000a | 1 | 1.000 |
Reason for complete discontinuation (n, %) | |||||
Relationship | 1 (4.5 %) | 7 (29.2 %) | 4.901a | 2 | 0.049* |
Therapy | 8 (36.4 %) | 4 (16 %) | 2.903a | 2 | 0.234 |
Need | 1 (4.5 %) | 14 (56 %) | 14.561a | 2 | 0.001** |
Feelings prior to action (n, %) | |||||
Strain | 42 (84 %) | 37 (74 %) | 1.507a | 1 | 0.220 |
Inner emptiness | 37 (74 %) | 30 (60 %) | 2.216a | 1 | 0.137 |
Aggression | 37 (74 %) | 29 (58 %) | 2.852a | 1 | 0.091 |
Sadness | 31 (62 %) | 34 (68 %) | 0.396a | 1 | 0.529 |
Fear | 3 (6 %) | 25 (50 %) | 24.008a | 1 | <0.001*** |
Fatigue | 3 (6 %) | 14 (28 %) | 8.575a | 1 | 0.006** |
Pleasure | 1 (2 %) | 1 (2 %) | 0.000a | 1 | 1.000 |
Disappointment | 1 (2 %) | 22 (44 %) | 24.901a | 1 | <0.001*** |
Methods | |||||
Number of methods (mean ± SD) | 1.78 ± 0.93 | 1.56 ± 0.91 | −1.196b | 98 | 0.235 |
Cutting (n, %) | 43 (86 %) | 40 (80 %) | 0.638a | 1 | 0.424 |
Hitting (n, %) | 24 (48 %) | 20 (40 %) | 0.649a | 1 | 0.420 |
Burning (n, %) | 15 (30 %) | 16 (32 %) | 0.047a | 1 | 0.829 |
Trichotillomania (n, %) | 7 (14 %) | 2 (4 %) | 3.053a | 1 | 0.160 |
Self-cutting localizations | n = 43 | n = 40 | |||
Number of localizations (mean ± SD) | 1.96 ± 1.195 | 2.38 ± 1.861 | 1.343b | 98 | 0.005** |
Upper limb (n, %) | 43 (100 %) | 35 (87.5 %) | 4.487a | 2 | 0.017* |
Arm, proximal | 17 (39.5 %) | 18 (45 %) | 0.044a | 2 | 0.834 |
Arm, distal | 37 (86 %) | 32 (80 %) | 1.177a | 2 | 0.555 |
Arm, distal incl. hand | 42 (97.7 %) | 32 (80 %) | 5.198a | 2 | 0.023* |
Hand (n, %) | 16 (37.2 %) | 19 (47.5 %) | 2.257a | 2 | 0.323 |
Lower limb | 23 (53.5 %) | 30 (75 %) | 8.019a | 2 | 0.042* |
Leg, proximal | 13 (30.2 %) | 26 (65 %) | 7.104a | 2 | 0.008** |
Leg, distal | 13 (30.2 %) | 17 (42.5 %) | 3.673a | 2 | 0.159 |
Leg, distal incl. foot | 14 (32.6 %) | 18 (45 %) | 0.735a | 2 | 0.391 |
Foot | 2 (4.7 %) | 7 (17.5 %) | 5.760a | 2 | 0.056 |