Of the 2363 participants linked to hospital records, 18 (0.8%) had at least one recorded hospital admission for self harm identified in the hospital episode statistics database: no self harm n=11 (0.6%), non-suicidal self harm n=1 (0.4%), and suicidal self harm n=6 (4.4%). In univariable analyses, an association with hospital admission was found only for suicidal self harm (odds ratio 7.99, 95% confidence interval 2.91 to 21.9), with little evidence of an association for non-suicidal self harm (0.63, 0.08 to 4.88). However, these findings need to be interpreted with caution given the small number of participants with a hospital admission in the analysis.
