amegbor/SpontaneousMiscarriage_ClimateAir

Code and analysis for the study: "The effect of climate anomalies and ambient air pollution on spontaneous miscarriage in Ghana" (Environmental Epidemiology, 2025). Includes data processing, INLA modeling, and visualization scripts used to generate study results. # SpontaneousMiscarriage_ClimateAir This repository contains the code and analyses for the paper: **Amegbor, Prince M.a,*; Quansah, Reginaldb; Gu, Lijuanc.** *The effect of climate anomalies and ambient air pollution on spontaneous miscarriage in Ghana: Evidence from a national cross-sectional survey.* Environmental Epidemiology 9(5): e420, October 2025. DOI: 10.1097/EE9.0000000000000420 --- ## Repository Structure - **MainResults.R** Contains the code for the primary analyses presented in the main manuscript. This includes: - Bayesian models of climate anomalies and air pollution exposures - Calculation of hazard ratios and 95% credible intervals - Generation of summary tables for the main manuscript - **SupplementaryResults.R** Contains the code for all supplementary analyses, including: ### Appendix B – Region-Specific Effects - Results of region-specific effects on spontaneous miscarriage ### Appendix C – Preconception Exposure by Rural-Urban Residency - Figure C1 – Non-linear association between preconception mean temperature anomaly and spontaneous miscarriage - Figure C2 – Non-linear association between preconception maximum temperature anomaly and spontaneous miscarriage - Figure C3 – Non-linear association between preconception precipitation anomaly and spontaneous miscarriage - Figure C4 – Non-linear association between preconception PM2.5 exposure and spontaneous miscarriage - Figure C5 – Non-linear association between preconception Carbon Monoxide (CO) exposure and spontaneous miscarriage - Figure C6 – Non-linear association between preconception Nitrogen Dioxide (NO2) exposure and spontaneous miscarriage - Figure C7 – Non-linear association between preconception Sulphur Dioxide (SO2) exposure and spontaneous miscarriage - Figure C8 – Non-linear association between preconception Ozone (O3) exposure and spontaneous miscarriage - Figure C9 – Non-linear association between preconception Enhanced Vegetation Index (EVI) exposure and spontaneous miscar …