TABLE 1.
Lifetime NSSI among transfeminine and transmasculine spectrum groups (n = 177)
| Characteristic | All who reported lifetime NSSI (n = 177) |
Transfeminine spectrum (n = 70) |
Transmasculine spectrum (n = 107) |
||
|---|---|---|---|---|---|
| Mean ± SD | Mean ± SD | Mean ± SD | t (df) |
p (two- sided) |
|
| Age (current) | 30.68 ± 11.98 | 33.51 ± 13.53 | 28.82 ± 10.50 | −2.46 (121.83) |
0.015 |
| Age at first NSSI | 14.11 ± 5.40 | 14.20 ± 6.66 | 14.06 ± 4.42 | −.16 (108.56) |
0.874 |
| Age at most recent NSSI | 25.23 ± 10.64 | 27.54 ± 12.60 | 23.72 ± 8.87 | −2.21 (113.30) |
0.029 |
| n (%) | n (%) | n (%) | X2 (df) |
p (two- sided) |
|
| Methods of NSSI | |||||
| Cut or carved skin | 127 (71.8) | 39 (55.7) | 88 (82.2) | 14.69 (1) | < 0.001 |
| Burned skin | 66 (37.3) | 18 (25.7) | 48 (44.9) | 6.63 (1) | 0.010 |
| Hit self on purpose | 110 (62.1) | 42 (60.0) | 68 (63.6) | 0.23 (1) | 0.634 |
| Picked to draw blood | 90 (50.8) | 30 (42.9) | 60 (56.1) | 2.96 (1) | 0.085 |
| Other | 68 (38.4) | 33 (47.1) | 35 (32.7) | 3.73 (1) | 0.054 |
| Scraped skin to draw blood | 57 (32.2) | 24 (34.3) | 33 (30.8) | 0.23 (1) | 0.632 |
| Inserted sharp objects | 51 (28.8) | 23 (32.9) | 28 (26.2) | 0.92 (1) | 0.337 |
| Gave self a tattoo | 22 (12.4) | 7 (10.0) | 15 (14.0) | 0.628 (1) | 0.428 |
| Functions of NSSI | |||||
| Get rid of bad feelingsa | 109 (63.0) | 34 (50.0) | 75 (71.4) | 8.13 (1) | 0.004 |
| Due to feeling empty or numbb | 64 (36.8) | 22 (32.4) | 42 (39.6) | 0.94 (1) | 0.332 |
| Communicate or get attentionb | 22 (12.6) | 9 (13.2) | 13 (12.3) | 0.04 (1) | 0.851 |
| Get out of doing something or get | 12 (6.9) | 6 (8.8) | 6 (5.7) | 0.65 (1) | 0.542 |
| away from othersb,c | |||||
| Received medical treatment for NSSI | 50 (28.2) | 24 (34.2) | 26 (24.3) | 2.08 (1) | 0.149 |
| Likely to self-injure in the futured | 29 (16.6) | 14 (20.3) | 15 (14.2) | 1.14 (1) | 0.286 |
Note: Degrees of freedom for age variables are less than 177 due to equal variances not assumed based on Levene’s test.
a
Four participants with missing data for this item.
b
Three participants with missing data for this item.
c
One cell with expected frequency less than five, so Fisher’s Exact test conducted.
d
Two participants with missing data for this item.