Health promotion journal of Australia : official journal of Australian Association of Health Promotion Professionals · 2026
A Geospatial Linkage Analysis of Environmental Exposures, Socioeconomic Profile and Health Outcomes Among Women of Reproductive Age in Victoria, Australia.
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Mulyadi Catherine Helenna, Hui Lisa, Jiang Heng, de Leon Mari, Nacpil J C, Wang Yichao, Choi Jason, Mavoa Suzanne, Marzan Melvin Barrientos
Аннотация
ISSUE ADDRESSED: Non-communicable disorders (NCDs) in women of reproductive age (WRA) shape maternal and intergenerational outcomes, yet their area-level socio-environmental drivers remain unclear. We examined correlations between socio-environmental factors and NCDs in WRA.
METHODS: We linked 2021 Australian Census sociodemographic and health variables with postcode-level environmental exposures, including air pollutants (PM2.5, NO2, CO, SO2, formaldehyde and ozone), land surface temperature and greenness. The NCDs (asthma, diabetes, cancer, mental health and cardio-renal disease) were expressed per 1000 WRA. Spatial clustering (Moran's I) and socioeconomic gradients (Wagstaff Concentration Index) were assessed, alongside geospatial regression and clustering analyses.
RESULTS: NCDs among WRA showed strong socioeconomic patterning. Most disadvantaged postcodes recorded the highest composite NCD burden (323.0 and 227.3 per 1000 in the most disadvantaged and advantaged postcodes respectively), with the steepest inequality for diabetes (Wagstaff = -0.16). Environmental exposures demonstrated spatial clustering but weak associations with health outcomes. Notably, peri-urban and fringe postcodes experienced higher heat exposure coinciding with socioeconomic disadvantage. Inner Melbourne (with lower heat exposure and more socioeconomic advantage) showed lower NCD burden despite elevated NO2 and PM2.5.
CONCLUSION: NCDs among WRA in Victoria are strongly patterned by socioeconomic disadvantage with geographic clustering by environmental exposures. These inequities persist even where most air quality measures remain within regulatory limits, underscoring the disproportionate burden faced by disadvantaged areas.
SO WHAT: Health promotion should prioritise disadvantaged peri-urban and regional communities through proactive, place-based policies that address both environmental conditions and the social systems that influence how and for whom those conditions become harmful.
METHODS: We linked 2021 Australian Census sociodemographic and health variables with postcode-level environmental exposures, including air pollutants (PM2.5, NO2, CO, SO2, formaldehyde and ozone), land surface temperature and greenness. The NCDs (asthma, diabetes, cancer, mental health and cardio-renal disease) were expressed per 1000 WRA. Spatial clustering (Moran's I) and socioeconomic gradients (Wagstaff Concentration Index) were assessed, alongside geospatial regression and clustering analyses.
RESULTS: NCDs among WRA showed strong socioeconomic patterning. Most disadvantaged postcodes recorded the highest composite NCD burden (323.0 and 227.3 per 1000 in the most disadvantaged and advantaged postcodes respectively), with the steepest inequality for diabetes (Wagstaff = -0.16). Environmental exposures demonstrated spatial clustering but weak associations with health outcomes. Notably, peri-urban and fringe postcodes experienced higher heat exposure coinciding with socioeconomic disadvantage. Inner Melbourne (with lower heat exposure and more socioeconomic advantage) showed lower NCD burden despite elevated NO2 and PM2.5.
CONCLUSION: NCDs among WRA in Victoria are strongly patterned by socioeconomic disadvantage with geographic clustering by environmental exposures. These inequities persist even where most air quality measures remain within regulatory limits, underscoring the disproportionate burden faced by disadvantaged areas.
SO WHAT: Health promotion should prioritise disadvantaged peri-urban and regional communities through proactive, place-based policies that address both environmental conditions and the social systems that influence how and for whom those conditions become harmful.