Table 3.
Between-group differences (self-harm vs. no self-harm; income groups; age groups; sexual orientation groups and gender) for key variables and their respective 95% confidence intervals and effect sizes.
| Variables | Self-harm N = 163 |
No self-harm N = 122 |
Independent samples t-tests Cohen’s d | 95% CI | ||
|---|---|---|---|---|---|---|
| M | SD | M | SD | |||
| Depression | 14.96 | 6.38 | 11.03 | 4.03 | .074 | –5.28, –2.07 |
| Suicidal ideation | 3.09 | .61 | 2.38 | .59 | .090 | –.857, –.562 |
| Psychological distress | 28.69 | 8.18 | 23.07 | 8.15 | .069 | –7.47, –3.36 |
| Internalized homophobia | 4.12 | .85 | 3.75 | .77 | .045 | –.598, –.180 |
| Discrimination | 10.11 | 5.49 | 7.18 | 4.59 | .058 | –4.05, –1.50 |
| LGB victimization | 12.95 | 5.34 | 11.04 | 4.03 | .040 | –2.94, –.657 |
| Self-harm | Chi-squared Phi/Cramer’s V | P value | ||||
| Age group 18–24 years old | 34% | .310 | .000 | |||
| Age group 25–34 years old | 40% | |||||
| Age group 35–44 years old | 20% | |||||
| Age group 45+ years old | 5.5% | |||||
| Income group less than £10,000 | 41% | .183 | .046 | |||
| Income group £10,000–£24,999 | 32% | |||||
| Income group £25,000–£34,999 | 13.2% | |||||
| Income group £35,000 and more | 14% | |||||
| Females | 68% | .193 | .001 | |||
| Males | 33% | |||||
| Sexual orientation: Gay | 31% | .250 | .003 | |||
| Sexual orientation: Lesbian | 31% | |||||
| Sexual orientation: Bisexual | 18% | |||||
CI: confidence interval; SD: standard deviation; LGB: lesbian, gay and bisexual.