Association between air pollution and first hospital admission for total kidney and urinary system disease or chronic kidney disease for specific subpopulations
| PM2.5 | NO2 | |
| Total kidney and urinary system disease | ||
| Age at entry, years | ||
| >75 v 65-74 | 0.983 (0.979 to 0.987) | 1.012 (1.012 to 1.017) |
| Sex | ||
| Women v men | 0.985 (0.983 to 0.988) | 0.987 (0.985 to 0.989) |
| Race | ||
| Black v white | 0.976 (0.969 to 0.982) | 1.014 (1.009 to 1.019) |
| Other v white | 1.003 (0.991 to 1.015) | 0.950 (0.942 to 0.958) |
| Medicaid eligibility | ||
| Eligible v not eligible | 0.980 (0.974 to 0.986) | 0.962 (0.957 to 0.966) |
| Chronic kidney disease | ||
| Age at entry, years | ||
| >75 v 65-74 | 0.932 (0.927 to 0.938) | 1.007 (1.004 to 1.010) |
| Sex | ||
| Women v men | 0.935 (0.931 to 0.939) | 0.955 (0.952 to 0.958) |
| Race | ||
| Black v white | 0.988 (0.978 to 0.997) | 1.018 (1.013 to 1.024) |
| Other v white | 0.993 (0.976 to 1.010) | 1.012 (1.006 to 1.019) |
| Medicaid eligibility | ||
| Eligible v not eligible | 1.018 (1.011 to 1.026) | 0.978 (0.974 to 0.982) |
Data are hazard ratio (95% confidence interval) for each 5 µg/m3 increase in fine particles (PM2.5) and 10 ppb increase in nitrogen dioxide (NO2).
*Other included Asian, Hispanic, American Indian or Alaskan Native, and unknown. Data on race were obtained from Medicare beneficiary files.