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Assessing the spatial distribution of methadone clinic clients and their access to treatment.

Wong NS, Lee SS, Lin H - Harm Reduct J (2010)

Bottom Line: Walking (55.6%) was the commonest transport mode followed by cycling (30.2%).The residence locations displayed a compact distribution, merging with the general population without any evidence of clustering.Though the distribution of methadone users could have been shaped by the location of clinic, it can also be concluded that methadone clinics at convenient locations are needed if maintenance is a key determinant of service effectiveness.

View Article: PubMed Central - HTML - PubMed

Affiliation: Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong. sslee@cuhk.edu.hk.

ABSTRACT
Using Geographic Information System (GIS), the spatial distribution of methadone clinic clients and their utilization of a treatment service in Hong Kong was analysed. A majority (93.7%) of the 63 methadone users recruited were residing in the same district, of which 84.1% spent not more than 15 minutes for traveling. Walking (55.6%) was the commonest transport mode followed by cycling (30.2%). There was no distance decay effect on traveling time, but an association between distance and transport selection could be demonstrated. The residence locations displayed a compact distribution, merging with the general population without any evidence of clustering. Though the distribution of methadone users could have been shaped by the location of clinic, it can also be concluded that methadone clinics at convenient locations are needed if maintenance is a key determinant of service effectiveness.

No MeSH data available.


Related in: MedlinePlus

Transport modes and traveling time of methadone clients, showing resident locations of respondents who attended the clinic on foot, by cycling or vehicle transport, the latter referring to bus, train, taxi and driving (1 patient), and excluding 4 living outside Tai Po District.
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Figure 2: Transport modes and traveling time of methadone clients, showing resident locations of respondents who attended the clinic on foot, by cycling or vehicle transport, the latter referring to bus, train, taxi and driving (1 patient), and excluding 4 living outside Tai Po District.

Mentions: Figure 2 shows the spatial distribution of the residence location of respondents living in Tai Po by the relative location estimation method. Figure 3 shows the location of the spatial mean centre [6] for each transportation mode. The mean centre of residence location of respondents choosing the walking mode was closer to the clinic than those coming by cycling. Public transport mode (including bus and mini-bus) gave a mean centre further away from the clinic. Efficiency of walking was reduced by distance friction. Those living farther away were inclined to use more efficient transport mode, such as cycling, to access the clinic. The distribution of Tai Po District's residents was reflected by the mean centre and standard distance of the residential buildings of the district. As illustrated in figure 4, the spatial mean centre of the residence location of respondents living in the district was very close to that of the residential buildings. The methadone clinic was within the buffer zone representing 67% (1 Standard Deviation/S.D.) of the spatial dispersion of local respondents' residence locations. To illustrate the compactness of the distribution, almost all (99.73% or 3 S.D.) local respondents were living in a zone overlapping that of the standard distance (1 S.D.) of residential buildings in the district. In fact none of the local respondents was living beyond the zone covering 1 S.D. of Tai Po residential buildings.


Assessing the spatial distribution of methadone clinic clients and their access to treatment.

Wong NS, Lee SS, Lin H - Harm Reduct J (2010)

Transport modes and traveling time of methadone clients, showing resident locations of respondents who attended the clinic on foot, by cycling or vehicle transport, the latter referring to bus, train, taxi and driving (1 patient), and excluding 4 living outside Tai Po District.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2908587&req=5

Figure 2: Transport modes and traveling time of methadone clients, showing resident locations of respondents who attended the clinic on foot, by cycling or vehicle transport, the latter referring to bus, train, taxi and driving (1 patient), and excluding 4 living outside Tai Po District.
Mentions: Figure 2 shows the spatial distribution of the residence location of respondents living in Tai Po by the relative location estimation method. Figure 3 shows the location of the spatial mean centre [6] for each transportation mode. The mean centre of residence location of respondents choosing the walking mode was closer to the clinic than those coming by cycling. Public transport mode (including bus and mini-bus) gave a mean centre further away from the clinic. Efficiency of walking was reduced by distance friction. Those living farther away were inclined to use more efficient transport mode, such as cycling, to access the clinic. The distribution of Tai Po District's residents was reflected by the mean centre and standard distance of the residential buildings of the district. As illustrated in figure 4, the spatial mean centre of the residence location of respondents living in the district was very close to that of the residential buildings. The methadone clinic was within the buffer zone representing 67% (1 Standard Deviation/S.D.) of the spatial dispersion of local respondents' residence locations. To illustrate the compactness of the distribution, almost all (99.73% or 3 S.D.) local respondents were living in a zone overlapping that of the standard distance (1 S.D.) of residential buildings in the district. In fact none of the local respondents was living beyond the zone covering 1 S.D. of Tai Po residential buildings.

Bottom Line: Walking (55.6%) was the commonest transport mode followed by cycling (30.2%).The residence locations displayed a compact distribution, merging with the general population without any evidence of clustering.Though the distribution of methadone users could have been shaped by the location of clinic, it can also be concluded that methadone clinics at convenient locations are needed if maintenance is a key determinant of service effectiveness.

View Article: PubMed Central - HTML - PubMed

Affiliation: Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong. sslee@cuhk.edu.hk.

ABSTRACT
Using Geographic Information System (GIS), the spatial distribution of methadone clinic clients and their utilization of a treatment service in Hong Kong was analysed. A majority (93.7%) of the 63 methadone users recruited were residing in the same district, of which 84.1% spent not more than 15 minutes for traveling. Walking (55.6%) was the commonest transport mode followed by cycling (30.2%). There was no distance decay effect on traveling time, but an association between distance and transport selection could be demonstrated. The residence locations displayed a compact distribution, merging with the general population without any evidence of clustering. Though the distribution of methadone users could have been shaped by the location of clinic, it can also be concluded that methadone clinics at convenient locations are needed if maintenance is a key determinant of service effectiveness.

No MeSH data available.


Related in: MedlinePlus