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    Area-level deprivation, childhood dental ambulatory sensitive hospitalizations and community water fluoridation: evidence from New Zealand (2019)

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    Type of Content
    Journal Article
    UC Permalink
    https://hdl.handle.net/10092/100649
    
    Publisher's DOI/URI
    https://doi.org/10.1093/ije/dyaa043
    
    Publisher
    Oxford University Press (OUP)
    ISSN
    0300-5771
    1464-3685
    Language
    English
    Collections
    • Health: Journal Articles [151]
    Authors
    Hobbs, Matthew
    Wade, A.
    Jones, P.
    Marek, Lukas
    Tomintz, Melanie
    Sharma, K.
    McCarthy, J.
    Mattingley, B.
    Campbell, Malcolm
    Kingham, Simon
    show all
    Abstract

    Background: We examined the association between area-level deprivation and dental ambulatory sensitive hospitalizations (ASH) and considered the moderating effect of community water fluoridation (CWF). The hypothesis was that higher levels of deprivation are associated with higher dental ASH rates and that CWF will moderate this association such that children living in the most deprived areas have greater health gain from CWF. Methods: Dental ASH conditions (dental caries and diseases of pulp/periapical tissues), age, gender and home address identifier (meshblock) were extracted from pooled cross-sectional data (Q3, 2011 to Q2, 2017) on children aged 0–4 and 5–12 years from the National Minimum Dataset, New Zealand (NZ) Ministry of Health. CWF was obtained for 2011 and 2016 from the NZ Institute of Environmental Science and Research. Dental ASH rates for children aged 0–4 and 5–12 years (/1000) were calculated for census area units (CAUs). Multilevel negative binomial models investigated associations between area-level deprivation, dental ASH rate and moderation by CWF status. Results: Relative to CWF (2011 and 2016), no CWF (2011 and 2016) was associated with increased dental ASH rates in children aged 0–4 [incidence rate ratio (IRR) = 1.171 (95% confidence interval 1.064, 1.288)] and aged 5–12 years [IRR = 1.181 (1.084, 1.286)]. An interaction between area-level deprivation and CWF showed that the association between CWF and dental ASH rates was greatest within the most deprived quintile of children aged 0–4 years [IRR = 1.316 (1.052, 1.645)]. Conclusions: CWF was associated with a reduced dental ASH rate for children aged 0–4 and 5–12 years. Children living in the most deprived areas showed the greatest effect of CWF on dental ASH rates, indicating that the greater health gain from CWF occurred for those with the highest socio-economic disadvantage. Variation in CWF contributes to structural inequities in oral-health outcomes for children.

    Citation
    Hobbs M, Wade A, Jones P, Marek L, Tomintz M, Sharma K, McCarthy J, Mattingley B, Campbell M, Kingham S Area-level deprivation, childhood dental ambulatory sensitive hospitalizations and community water fluoridation: evidence from New Zealand. International Journal of Epidemiology.
    This citation is automatically generated and may be unreliable. Use as a guide only.
    Keywords
    Community Water Fluoridation (CWF); dental ambulatory sensitive hospitalisation (ASH) rates; area-level deprivation; moderation; children; dentist
    ANZSRC Fields of Research
    11 - Medical and Health Sciences::1105 - Dentistry::110599 - Dentistry not elsewhere classified
    11 - Medical and Health Sciences::1117 - Public Health and Health Services::111704 - Community Child Health
    11 - Medical and Health Sciences::1117 - Public Health and Health Services::111706 - Epidemiology
    Rights
    All rights reserved unless otherwise stated
    http://hdl.handle.net/10092/17651

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