Table 1

Probabilities of events for the decision modellinga

Event pointP
Following police attendance:
    Section 136 detention0.03
    Arrest0.18
    No further action0.80
Section 136 detention
Following Section 136 detention:
    Take to Section 136 suite0.14
    Take to custody0.86
Following Mental Health Act assessment following being
taken to Section 136 suite:
    Detained – transfer to hospital0.00
    Not detainable – release1.00
Following being taken to custody:
    Forensic medical examiner assessment0.08
    Healthcare practitioner assessment0.83
    No assessment0.08
Following forensic medical examiner assessment:
    Mental Health Act assessment0.00
    Not detainable – release1.00
Following healthcare practitioner assessment:
    Forensic medical examiner assessment0.70
    Mental Health Act assessment0.30
    Not detainable – release0.00
Following forensic medical examiner assessment after
healthcare practitioner assessment:
    Mental Health Act assessment0.71
    Not detainable – release0.29
Following Mental Health Act assessment after forensic medical
examiner assessment following healthcare practitioner
assessment:
    Detained – transfer to hospital0.40
    Not detainable – release0.60
Arrest
Following Mental Health Act assessment after forensic medical
examiner assessment following healthcare practitioner
assessment:
    Forensic medical examiner assessment0.01
    Healthcare practitioner assessment0.67
    No assessment0.31
Following forensic medical examiner assessment:
    Mental Health Act assessment1.00
    Not detainable – release0.00
Following healthcare practitioner assessment:
    Forensic medical examiner assessment0.14
    Mental Health Act assessment0.86
    Not detainable – release0.00
Following forensic medical examiner assessment after
healthcare practitioner assessment:
    Mental Health Act assessment0.25
    Not detainable – release0.75
Following Mental Health Act assessment after forensic
medical examiner assessment following healthcare
practitioner assessment:
    Detained – transfer to hospital0.50
    Not detainable – release0.50
  • a. Some probabilities equal >1 due to rounding. Source of information: clients with a police attendance in the interface case-linkage study.