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Table 5 Area under the curve (AUC) for repeat self-harm by subgroups, with 95% confidence intervals, N = 4000, m = 1–5

From: Accuracy of risk scales for predicting repeat self-harm and suicide: a multicentre, population-level cohort study using routine clinical data

  MSHR ReACT SPS MSPS
Overall AUC (95% CI) 0.71 (0.69, 0.73) 0.71 (0.70, 0.73) 0.51 (0.48, 0.54) 0.49 (0.47, 0.51)
Male (n = 1589) 0.69 (0.67, 0.72) 0.69 (0.66, 0.72) 0.54 (0.51, 0.57) 0.52 (0.49, 0.55)
Female (n = 2411) 0.72 (0.70, 0.74) 0.73 (0.70, 0.75) 0.51 (0.49, 0.54) 0.49 (0.46, 0.52)
Aged < 19 (n = 552) 0.73 (0.68, 0.78) 0.73 (0.68, 0.78) 0.47 (0.42, 0.52) 0.48 (0.42, 0.53)
Aged = > 19 to 44 (n = 2556) 0.71 (0.69, 0.73) 0.71 (0.69, 0.73) 0.51 (0.49, 0.54) 0.48 (0.46, 0.50)
Aged 45+ (n = 892) 0.71 (0.67, 0.74) 0.71 (0.68, 0.75) 0.54 (0.49, 0.58) 0.51 (0.47, 0.56)
Main method of harm
 Self-poison (n = 3241) 0.71 (0.69, 0.73) 0.72 (0.70, 0.74) 0.53 (0.51, 0.55) 0.50 (0.48, 0.52)
 Self-injury (n = 759) 0.70 (0.67, 0.74) 0.67 (0.64, 0.71) 0.47 (0.43, 0.51) 0.47 (0.42, 0.51)
Assessed by:
 Psychiatrist (n = 638) 0.67 (0.63, 0.71) 0.64 (0.60, 0.69) 0.61 (0.56, 0.66) 0.57 (0.52, 0.62)
 Mental health nurse (n = 1273) 0.69 (0.66, 0.72) 0.72 (0.69, 0.75) 0.51 (0.47, 0.54) 0.47 (0.44, 0.51)
 Other (n = 295) 0.67 (0.61, 0.74) 0.71 (0.64, 0.77) 0.50 (0.42, 0.57) 0.44 (0.37, 0.51)
History of self-harm (n = 2759) 0.63 (0.61, 0.66) 0.67 (0.65, 0.69) 0.45 (0.42, 0.48) 0.44 (0.41, 0.46)
No history of self-harm (n = 1241) 0.64 (0.59, 0.69) 0.60 (0.53, 0.67) 0.49 (0.42, 0.55) 0.46 (0.40, 0.52)
  1. Bold text denotes statistically significant (p < 0.05) difference between groups