1Rahman, MA, Todd, C, John, A, Tan, J, Kerr, M, Potter, R, et al. School achievement as a predictor of depression and self-harm in adolescence: linked education and health record study. Br J Psychiatry 2018; 212: 215–21.
2Gilbert, R, Lafferty, R, Hagger-Johnson, G, Harron, K, Zhang, L-C, Smith, P, et al. GUILD: GUidance for Information about Linking Data sets. J Public Health 2018; 40: 191–8.
3Hawton, K, Saunders, KE, O'Connor, RC. Self-harm and suicide in adolescents. Lancet 2012; 379: 2373–82.
4Fergusson, DM, Beautrais, AL, Horwood, LJ. Vulnerability and resiliency to suicidal behaviours in young people. Psychol Med 2003; 33: 61–73.