Table 1:
Participant Demographics by NSSI History
| Characteristic | Entire Sample (N = 621) | NSSI History (N = 36) | No NSSI History (N = 585) | P Value |
|---|---|---|---|---|
|
| ||||
| Gender | .23 | |||
| Female | 277 (44.6%) | 21 (58.3%) | 256 (43.8%) | |
| Male | 343 (55.2%) | 15 (41.7%) | 328 (56.1%) | |
| Unknown | 1 (0.2%) | - | 1 (0.1%) | |
|
| ||||
| Race | ||||
|
| ||||
| Asian | 15 (2.4%) | - | 15 (2.5%) | .87 |
| Black | 127 (20.5%) | 6 (16.7%) | 121 (20.7%) | |
| Native Hawaiian or Pacific Islander | 1 (0.2%) | - | 1 (0.2%) | |
| White | 378 (60.9%) | 25 (69.4%) | 353 (60.3%) | |
| Multiracial | 19 (3.1%) | 1 (2.8%) | 18 (3.1%) | |
| Other/Unknown | 81 (12.9%) | 4 (11.1%) | 77 (13.2%) | |
|
| ||||
| Ethnicity | .50 | |||
| Latino or Hispanic | 61 (%) | 4 (11.1%) | 57 (9.7%) | |
|
| ||||
| Mean age (range 18–93) | 50.3 (SD = 16.7) | 39.4 (SD = 14.5) | 51 (SD = 16.6) | <0.001 |
|
| ||||
| Reason for Hospital Admittance | ||||
| GM | 360 (58.0%) | 18 (50.0%) | 342 (58.5%) | |
| S | 142 (22.9%) | 9 (25.0%) | 133 (22.7%) | |
| Injury | 40 (6.4%) | 1 (2.8%) | 39 (6.7%) | |
| GM & Psych | 7 (1.1%) | 2 (5.6%) | 5 (0.9%) | |
| Psych | 3 (0.5%) | 1 (2.8%) | 2 (0.3%) | |
| Other/Unknown | 69 (11.1%) | 5 (13.9%) | 64 (10.9%) | |
Abbreviations: NSSI, non-suicidal self-injury; GM, general medical condition; S, surgical assessment and treatment; Psych, psychiatric reason. Chi-square analyses and t-tests were performed to assess demographic differences between participants with and without a lifetime history of NSSI; Significance defined at the p < 0.05 level.