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Bayesian spatiotemporal modelling for disease mapping: an application to preeclampsia and gestational diabetes in Florida, United States

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Abstract

Morbidities generally show patterns of concentration that vary by space and time. Disease mapping models are useful in estimating the spatiotemporal patterns of disease risks and are therefore pivotal for effective disease surveillance, resource allocation, and the development of prevention strategies. This study considers six spatiotemporal Bayesian hierarchical models based on two spatial conditional autoregressive priors. It could serve as a guideline on the development and application of Bayesian hierarchical models to assess the emerging risk trends, risk clustering, and spatial inequality trends, with estimation of covariables’ effects on the interested disease risk. The method is applied to the Florida Birth Record data between 2006 and 2015 to study two cardiovascular risk factors: preeclampsia and gestational diabetes. High-risk clusters were detected in North Central Florida for preeclampsia and in Central Florida for gestational diabetes. While the adjusted disease trend was stable, spatial inequality peaked in 2011–2012 for both diseases. Exposure to PM2.5 at first or/and second trimester increased the risk of preeclampsia and gestational diabetes, but the magnitude is less severe compared to previous studies. In conclusion, this study underscores the significance of selecting appropriate disease mapping models in estimating the intricate spatiotemporal patterns of disease risk and suggests the importance of localized interventions to reduce health disparities. The result also identified an opportunity to study potential risk factors of preeclampsia, as the spike of risk in North Central Florida cannot be explained by current covariables.

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Data availability

Data use approval is needed from the Florida Department of Health.

Abbreviations

AR1:

first order autoregressive

BHM:

Bayesian hierarchical model

BMI:

body mass index

CAR:

conditional autoregressive

DIC:

deviance information criterion

GDM:

gestational diabetes mellitus

IQR:

interquartile range

LISA:

local indicators of spatial association

PE:

preeclampsia

SD:

standard deviation

SIR:

standardized incidence ratio

WAIC:

widely applicable information criterion

References

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Acknowledgements

The authors would like to thank the FL-DOH for providing the data and acknowledge that the findings and conclusions are those of the authors and do not necessarily represent the official position of the Florida Department of Health.

Funding

This work is supported by The National Heart Lung and Blood Institute (Grant number: K01 HL146944).

Author information

Authors and Affiliations

Authors

Contributions

Conceptualization, B.I.; methodology, N.S., B.I., S.D.; formal analysis, N.S.; resources, B.I.; writing—original draft preparation, N.S.; writing—review and editing, B.I., R.L, Z.B., I.D.. All authors have read and agreed to the published version of the manuscript.

Corresponding author

Correspondence to Boubakari Ibrahimou.

Ethics declarations

Ethical approval

This study is approved with FIU IRB-20-0033.

Consent to participate

Informed consent was obtained from all subjects involved in the study by Florida Department of Health.

Consent for publication

Informed consent was obtained from all subjects involved in the study by Florida Department of Health.

Competing interests

The authors declare no competing interests.  Findings and conclusions are those of the authors and do not necessarily represent the official position of the Florida Department of Health.

Additional information

Responsible Editor: Lotfi Aleya

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Appendix

Appendix

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Functional Moran’s I statistics

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figure 9

Spatiotemporal random effects in FL counties. Grouped by mean and variance. Based on Leroux-AR1 (PE) model

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figure 10

Map of spatiotemporal random effect groups. Based on Leroux-AR1 (PE) model

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figure 11

Monthly smoothed risk and spatial inequality for GDM in Florida from 2006 to 2015. a Median of estimated risk. b Standard deviation of estimated risk. c IQR of estimated risk

Fig. 12
figure 12

Maps of estimated GDM SIR in Florida for selected months

Fig. 13
figure 13

Cluster maps of GDM risk in Florida for selected months

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Sun, N., Bursac, Z., Dryden, I. et al. Bayesian spatiotemporal modelling for disease mapping: an application to preeclampsia and gestational diabetes in Florida, United States. Environ Sci Pollut Res 30, 109283–109298 (2023). https://doi.org/10.1007/s11356-023-29953-0

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  • DOI: https://doi.org/10.1007/s11356-023-29953-0

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