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Bicycle theft
Bicycle theft includes the taking without consent or theft of a pedal cycle.
Bicycle thefts last month
There were 22 bicycle theft offences Figure 1: Count of bicycle theft by month in Trafford recorded by Greater Manchester Police in 50
Trafford during December 2017. This is 2 40 fewer crimes than the same month last 30 20 year. 10
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Source: data.police.uk | @traffordDataLab
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Bicycle thefts over the last 3 years
Bicycle theft has hovered between 12 and Figure 2: Bicycle thefts in Trafford, 2015-2017 53 offences over the last 36 months. The overall trend is relatively flat with clear Observed Trend seasonal peaks during the warmer 60 summer months.
The rate of bicycle theft over the last 3 40 years for each of Trafford's wards has 20 been visualised in this linked chart.
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Source: data.police.uk | @traffordDataLab
Download: Data | Image | R code Bicycle theft rates
There were approximately 0.1 bicycle Figure 3: Rates of bicycle theft in Trafford's wards thefts recorded for every 1,000 Trafford residents during December 2017. Greater Manchester 0.1 Trafford 0.1 However, there is some variation in rates Village 0.1 of bicycle theft between wards. St Mary's 0.1 Altrincham, Ashton upon Mersey and Sale Moor 0.1
Clifford 0.1 Davyhulme East wards recorded the Bowdon 0.1 highest rates of bicycle theft with 0.3 Priory 0.2 offences per 1,000 residents. Longford 0.2
Broadheath 0.2
Davyhulme East 0.3
Ashton upon Mersey 0.3
Altrincham 0.3
0.0 0.1 0.2 0.3 crimes per 1,000 population
Source: data.police.uk | @traffordDataLab
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Location quotient
The location quotient (Brantingham & Figure 4: Bicycle theft location quotient, December 2017 Brantingham 1997) provides a measure of the difference between the rate of crime GOH DVE DVW CLF in a ward and the rate of crime for the LFD FLX URM STR whole of Trafford. A location quotient of AOM PRI BSM
STM SLM 1.0 indicates that a ward has a BRK BRD TMP VLG proportional share of crime whilst a value ALT BOW
HCT greater than 1 indicates a HBN disproportionate share. Bicycle theft location quotient
0.50 0.75 1.00 1.25 1.50 1.75 Figure 4 shows that Altrincham ward Source: data.police.uk | @traffordDataLab recorded almost twice the rate of bicycle Download: Data | Image | R code theft during December 2017 as Trafford as a whole. Bicycle theft as a proportion of all crime
Bicycle theft offences accounted for 7% of Figure 5: Bicycle theft as a proportion of total offences*, December 2017 recorded crime in Ashton upon Mersey ward during December 2017 and 1% in Greater Manchester 1%
Trafford overall. Trafford 1%
Clifford 1%
Village 2%
Sale Moor 2%
St Mary's 2%
Bowdon 2%
Priory 2%
Davyhulme East 2%
Longford 3%
Altrincham 3%
Broadheath 4%
Ashton upon Mersey 7%
0% 2% 4% 6% 8% percentage of all crime
Source: data.police.uk | @traffordDataLab
*not including incidents of anti-social behaviour
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Notes
Bicycle theft rates have been calculated using the number of residents in each area. This is an imperfect denominator because it doesn't reflect the actual number of targets: bicycles
Ward abbreviations: Altrincham (ALT); Ashton upon Mersey (AOM); Bowdon (BOW); Broadheath (BRD); Brooklands (BRK); Bucklow-St Martins (BSM); Clifford (CLF); Davyhulme East (DVE); Davyhulme West (DVW); Flixton (FLX); Gorse Hill (GOH); Hale Barns (HBN); Hale Central (HCT); Longford (LFD); Priory (PRI); St Mary's (STM); Sale Moor (SLM); Stretford (STR); Timperley (TMP); Urmston (URM); Village (VLG)
References
Brantingham, P.L. and Brantingham, P.J. (1998). Mapping crime for analytic purposes: location quotients, counts and rates. In D. Weisburd and T. McEwen, eds, Crime Mapping and Crime Prevention, 263-288. Monsey, NY: Criminal Justice Press.
Data sources
Greater Manchester Police recorded crime: data.police.uk Mid-year population estimates (2016): ONS Released under Open Government Licence