This category contains all missing persons with some form of dementia, including those with Dementia of Alzheimer’s Type. Gibb and Woolnough's Grampian Study provides a useful discussion on different forms of dementia.

By Terrain

Male Female Other Total
Crag / Broken Ground 2 1 0 3
Farmland 57 35 6 98
Moorland / Upland 10 2 0 12
Not Specified 0 1 0 1
Plantation (dense) 4 1 0 5
Urban 90 38 9 137
Water Margin 4 4 0 8
Woodland / Parkland 10 4 1 15
Total: 177 86 16 279

By Outcome

n %
Fatality 44 15.8%
No Trace 11 3.9%
Unhurt 160 57.3%
Minor Injury 48 17.2%
Unknown 13 4.7%
Serious Injury 3 1.1%

Significantly more dementia sufferers were found injured than was the case for all other categories. There was no discernible gender difference or difference between the outcome for different types of terrain.

By Location Found

n
DITCH 2
Habitation 65
Linear Feature 43
Not Found 20
Open Ground 36
Travel Aid 82
Trees 17
Water 14

There was a significant difference between the locations in which persons missing in farmland and urban areas were found, and in addition there was a significant gender difference for persons missing in farmland.

The following additional information was provided with regard to five incidents for which the location was reported as ‘open ground’:

"Hit a natural barrier and sat down, stuck in dense undergrowth, asleep on a park bench, found in thick bushes and found in a patch of overgrown nettles and grass."

Distance From IPP (Km)

10% 0 Km
20% 0.3 Km
30% 0.5 Km
40% 1 Km
50% 1.2 Km
60% 2 Km
70% 2.9 Km
80% 5 Km
90% 9.5 Km
100% 270 Km

There was no significant difference between the distances travelled by dementia sufferers and all the other categories in the study; there was, however, a significant difference between dementia sufferers missing in farmland and urban environments.

Possible Scenarios

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

  • The missing person is likely to be found alive (82% of incidents)
  • For incidents in farmland, females are most likely to be found on a travel aid
  • (42%) or in a building (26%); males are equally likely (29%) to be found on a travel aid or next to a linear feature, or in a building (20%)
  • Ain urban areas, the missing person is most likely to be found on a travel aid (36%) or in a building (29%)
Category Information from 2011 Study

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