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Table 3 Adjusted odds ratio (OR) and the 95% confidence interval (CI) for the evaluation of relative impacts of social, built and geophysical environment on age-specific dementia mortality

From: The associations between social, built and geophysical environment and age-specific dementia mortality among older adults in a high-density Asian city

  Odds ratio
All decedents Old-old Mid-old Young-old
Regional air pollution (in 10 µg/m3) 1.245 [1.132, 1.369] 1.186 [1.057, 1.330] 1.370 [1.142, 1.643] 1.294 [0.817, 2.049]
Traffic-related air pollution (in 10 µg/m3) 1.027 [0.914, 1.155] 1.080 [0.937, 1.244] 0.966 [0.770, 1.212] 0.778 [0.448, 1.350]
Day with high temperature 1.011 [0.907, 1.128] 1.018 [0.892, 1.161] 0.969 [0.783, 1.199] 1.096 [0.675, 1.780]
Day with low temperature 0.971 [0.860, 1.095] 0.957 [0.828, 1.106] 1.073 [0.866, 1.347] 0.548 [0.252, 1.192]
Daily PM10 (in 10 µg/m3) 0.969 [0.951, 0.987] 0.963 [0.941, 0.985] 0.993 [0.962, 1.025] 0.880 [0.792, 0.977]
Daily NOx (in 10 µg/m3) 0.988 [0.977, 0.998] 0.993 [0.980, 1.005] 0.972 [0.962, 0.992] 1.019 [0.968, 1.073]
Daily O3 (in 10 µg/m3) 1.034 [1.014, 1.054] 1.041 [1.017, 1.065] 1.016 [0.981, 1.053] 1.065 [0.966, 1.175]
Relative humidity 1.003 [0.9996, 1.006] 1.002 [0.998, 1.006] 1.006 [0.999, 1.012] 0.997 [0.981, 1.013]
Percent of no sky view 0.989 [0.986, 0.992] 0.989 [0.985, 0.992] 0.989 [0.983, 0.995] 0.987 [0.972, 1.002]
NDVI (in 0.1 unit) 0.934 [0.914, 0.955] 0.943 [0.918, 0.968] 0.911 [0.874, 0.950] 0.954 [0.861, 1.056]
Percent of low education 0.999 [0.995, 1.004] 1.001 [0.996, 1.006] 0.996 [0.988, 1.005] 0.991 [0.970, 1.012]
Percent of non-Cantonese 0.995 [0.989, 1.002] 0.992 [0.984, 0.999] 1.004 [0.991, 1.016] 1.012 [0.984, 1.040]
Economically inactive 0.976 [0.870, 1.095] 0.925 [0.804, 1.064] 0.983 [0.793, 1.218] 1.740 [1.006, 3.010]
Unmarried 1.352 [1.263, 1.448] 1.252 [1.145, 1.370] 1.405 [1.254, 1.575] 1.933 [1.480, 2.526]
Age 1.084 [1.080, 1.088] 1.064 [1.057, 1.072] 1.091 [1.070, 1.113] 1.130 [1.075, 1.188]
Male 0.888 [0.836, 0.943] 0.801 [0.743, 0.864] 0.978 [0.876, 1.091] 1.713 [1.255, 2.339]
  1. Based on each regression, the OR was used to evaluate the difference between dementia and all-cause mortality. Significant results are highlighted with italics text and with p-value < 0.05
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