There were 315 cases of diabetes (prevalence: 5.5% [95% confidence interval (CI): 2.8, 7.2%]). Both PM10 and NO2
were associated with prevalent diabeteswith respective odds ratios of 1.40 [95% CI: 1.17, 1.67] and 1.19 [95% CI:
1.03, 1.38] per 10 μg/m3 increase in the average home outdoor level.