2015-07-13T09:40:19 n10468

A smoothed map of standardised incidence rates of BFV disease in north Queensland, using kriging and a semi-variogram model

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Barmah Forest virus (BFV) disease is a common and wide-spread mosquito-borne disease in Australia. This study investigated the spatio-temporal patterns of BFV disease in Queensland, Australia using geographical information system (GIS) tools and geostatistical analysis.

We calculated the incidence rates and standardised incidence rates of BFV disease. Moran's I statistic was used to assess the spatial autocorrelation of BFV incidences. Spatial dynamics of BFV disease was examined using semi-variogram analysis. Interpolation techniques were applied to visualise and display the spatial distribution of BFV disease in statistical local areas (SLAs) throughout Queensland. Mapping of BFV disease by SLAs reveals the presence of substantial spatio-temporal variation over time. Statistically significant differences in BFV incidence rates were identified among age groups (χ2 = 7587, df = 7327,p<0.01). There was a significant positive spatial autocorrelation of BFV incidence for all four periods, with the Moran's I statistic ranging from 0.1506 to 0.2901 (p<0.01). Semi-variogram analysis and smoothed maps created from interpolation techniques indicate that the pattern of spatial autocorrelation was not homogeneous across the state.

Panel A showing a smoothed map of standardised incidence rates of BFV disease using kriging and panel B showing a semi-variogram model.

 

Location of data collection

kmlPolyCoords
153.552920,-9.929730 137.994575,-9.929730 137.994575,-29.178588 153.552920,-29.178588 153.552920,-9.929730

Publications

Naish S, Hu W, Mengersen K, Tong S (2011) Spatio-Temporal Patterns of Barmah Forest Virus Disease in Queensland, Australia. PLoS ONE 6(10): e25688. http://dx.doi.org/10.1371/journal.pone.0025688

Research areas

semi-variogram
mosquito-bourne
smoothed
bfv
kriging
Barmah Forest virus
incidence
disease
rates
standardised
spatio-temporal

Cite this collection

Naish, Suchithra; Hu, Wenbiao; Mengersen, Kerrie; Tong, Shilu (2011): Panel A showing a smoothed map of standardised incidence rates of BFV disease using kriging and panel B showing a semi-variogram model. Figure_6.tif. PLOS ONE. 10.1371/journal.pone.0025688.g006

Licence


Creative Commons Attribution 4.0 (CC-BY)
http://creativecommons.org/licenses/by/4.0/

Copyright

© 2011, Naish et al

Connections

Has association with
Kerrie Mengersen  (Researcher)
Shilu Tong  (Researcher)
Sue Naish  (Researcher)
Wenbiao Hu  (Researcher)

Contacts

Name: Dr Sue Naish

Other

Date record created:
2015-07-02T10:24:38
Date record modified:
2015-07-13T09:40:19
Record status:
Published - Open Access