This category refers to missing persons with a mental age that is very different from their chronological age.

By Terrain

Male Female Other Total
Crag / Broken Ground 1 0 0 1
Farmland 10 3 1 14
Moorland / Upland 5 1 0 6
Plantation (dense) 3 0 0 3
Urban 13 4 1 18
Water Margin 3 0 0 3
Woodland / Parkland 5 2 0 7
Total: 40 10 2 52

By Outcome

n %
Unhurt 41 78.8%
Fatality 2 3.8%
Minor Injury 3 5.8%
Unknown 5 9.6%
No Trace 1 1.9%

Significantly more missing persons in this category were found unhurt than was the case with other categories. There was no discernible terrain or gender difference.

By Location Found

n
Habitation 24
Linear Feature 2
Not Found 4
Open Ground 1
Travel Aid 10
Trees 8
Water 3

The likelihood of a missing person in this category in an urban environment being found in a building was significantly greater than in all the other types of terrain. There were no significant gender differences.

No additional information was provided with regard to one incident for which the location was reported as ‘open ground’.

Distance From IPP (Km)

10% 0 Km
20% 0 Km
30% 0.2 Km
40% 0.5 Km
50% 1 Km
60% 2.8 Km
70% 4.8 Km
80% 10 Km
90% 18 Km
100% 55 Km

There were no discernible differences between the distances travelled by missing persons in this category and all the other categories; there were no discernible terrain or gender differences.

Possible Scenarios

Based on the information given above, some of the following comments will probably occur in the most likely scenarios for missing persons in this category. In practice, the search manager should not rule out other plausible scenarios.

  • The missing person is likely to be found alive (95% of incidents)
  • For incidents in urban areas the missing person is most likely to be found in a building (7 out of 12 incidents)
  • For incidents in non-urban areas the missing person is most likely to be found in a building (32% of incidents) or among trees (28% of incidents)
Category Information from 2011 Study

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