Table 2. Prevalence of individuals susceptible to health effects from air pollution, NHANES 2007–2010, N = 10,898.
| Susceptible category | Na | Percent (95% CI)a |
| None | 7135 | 73.0 (71.4, 74.6) |
| Respiratory only | 642 | 6.4 (5.5, 7.2) |
| Cardiovascular only | 319 | 2.6 (2.3, 2.9) |
| ≥65 years only | 1713 | 10.9 (10.1, 11.8) |
| Respiratory and cardiovascular | 136 | 1.0 (0.7, 1.3) |
| Respiratory and ≥65 years | 220 | 1.6 (1.3, 1.8) |
| Cardiovascular and ≥65 years | 608 | 3.8 (3.3, 4.3) |
| All three groups | 125 | 0.7 (0.5, 0.9) |
NHANES = National Health and Nutrition Examination Survey; CI = confidence interval.
a
N is the unweighted sample N; percents are corrected for survey design and may not sum to 100 due to rounding.