Table 1.
Characteristics of the Study Sample Stratified by History of Nonsuicidal Self-Injury
| Characteristic, n (column %)* | History of NSSI (N=185) |
p† | |
|---|---|---|---|
| Yes (n=68) | No (n=117) | ||
| Age (years) at clinic presentation, median (IQR) | 16.3 (4.1) | 16.2 (4.0) | 0.837 |
| Age (years) at most recent clinic visit, median (IQR) | 19.0 (4.8) | 18.4 (5.0) | 0.665 |
| Assigned sex at birtha | <0.001 | ||
| Male | 9 (13.4) | 44 (37.6) | |
| Female | 58 (86.6) | 73 (62.4) | |
| Gender identity | 0.004 | ||
| Transmasculine spectrum | 54 (79.4) | 73 (62.4) | |
| Transfeminine spectrum | 9 (13.2) | 40 (34.2) | |
| Nonbinary/gender nonconforming | 5 (7.4) | 4 (3.4) | |
| Race | 0.677 | ||
| White or Caucasian | 59 (90.8) | 103 (88.8) | |
| Non-White | 6 (9.2) | 13 (11.2) | |
| Ethnicity | 0.295 | ||
| Hispanic or Latino | 7 (11.1) | 7 (6.5) | |
| Non-Hispanic or Latino | 56 (88.9) | 100 (93.5) | |
| Socially transitionedb | 0.207 | ||
| Yes | 61 (93.9) | 99 (86.8) | |
| No | 4 (6.2) | 15 (13.2) | |
| Medically transitioningc | 0.119 | ||
| Yes | 62 (91.2) | 97 (82.9) | |
| No | 6 (8.8) | 20 (17.1) | |
| Rural zip code residenced | 0.125 | ||
| Yes | 37 (54.4) | 50 (42.7) | |
| No | 31 (45.6) | 67 (57.3) | |
| Nonmetro county residencee | 0.534 | ||
| Yes | 16 (23.5) | 23 (19.7) | |
| No | 52 (76.5) | 94 (80.3) | |
Boldface indicates values which were significantly associated with history of NSSI.
Numbers may not sum to totals due to missing data and column percentages may not sum to 100% due to rounding.
p-Value for Wilcoxon two-sample test (continuous variables) or χ2 test (categorical variables); Fisher's exact test was utilized when the sample count in a given category was <5.
One intersex patient was excluded from the analysis of the variable assigned sex at birth.
Social transition was defined as presenting as one's affirmed gender at home and/or in public spaces, including school and the workplace (i.e., through dress and use of preferred pronouns and name).
Medical transition was defined as lifetime or current use of GnRH analogs and/or GAHT, and/or history of gender-affirming surgery.
Zip code with a population <10,000.33
County that includes some combination of open countryside, rural towns (<2500 people), and urban areas with populations <50,000 that are not part of larger metropolitan areas.33
GAHT, gender-affirming hormone therapy; GnRH analogs, Gonadotropin-Releasing Hormone Analogs; NSSI, nonsuicidal self-injury.