Table 1. Population characteristics by activity change status, NHANES 2007–2010, N = 10,898.
| Changed activity | Did not change activity | Not informed about air quality | |||||
| Characteristic | Na | Percent (95% CI)b | Na | Percent (95% CI)b | Na | Percent (95% CI)b | |
| Entire population | 1305 | 12.0 (10.9, 13.1) | 8895 | 81.5 (79.5, 83.5) | 698 | 6.5 (4.5, 8.6) | |
| Agec | 20–34 years | 230 | 8.3 (6.6, 9.9) | 2244 | 85.6 (85.6, 88.6) | 2635 | 6.2 (4.0, 8.3) |
| 35–49 years | 336 | 12.3 (10.5, 14.0) | 2329 | 80.9 (78.2, 83.6) | 2845 | 6.8 (4.4, 9.3) | |
| 50–64 years | 398 | 14.2 (12.0, 16.4) | 2186 | 79.7 (76.7, 82.6) | 2752 | 6.1 (3.7, 8.5) | |
| ≥65 years | 341 | 14.2 (11.6, 16.8) | 2136 | 79.7 (76.5, 82.6) | 2666 | 7.0 (4.3, 9.8) | |
| Genderc | Male | 513 | 9.3 (8.2, 10.5) | 4453 | 84.4 (82.2, 86.7) | 335 | 6.3 (4.1, 8.5) |
| Female | 792 | 14.5(13.0, 15.9) | 4442 | 78.8 (76.6, 80.9) | 363 | 6.7 (4.7, 8.8) | |
| Educationc | Less than high school | 243 | 7.9 (6.5, 9.3) | 2737 | 84.4 (81.8, 87.0) | 246 | 7.8 (4.8, 10.7) |
| High school | 281 | 10.6 (8.8, 12.4) | 2181 | 84.5 (82.7, 86.4) | 124 | 4.9 (3.4, 6.4) | |
| Some college or 2-year degree | 436 | 13.3 (11.7, 15.0) | 2315 | 79.5 (82.7, 86.4) | 188 | 7.2 (4.6, 9.9) | |
| 4-year college degree or higher | 345 | 14.8 (12.1, 17.5) | 1662 | 78.9 (75.9, 81.9) | 140 | 6.3 (4.0, 8.6) | |
| Race/ethnicityc | Non-Hipanic white | 659 | 12.3 (10.8, 13.7) | 4222 | 80.9 (78.6, 83.2) | 367 | 6.9 (4.4, 9.3) |
| Non-Hispanic black | 293 | 14.2 (10.4, 17.9) | 1637 | 83.8 (79.7, 87.9) | 43 | 2.0 (1.2, 2.8) | |
| Hispanic | 276 | 8.0 (6.0, 10.0) | 2616 | 83.8 (79.5, 88.0) | 249 | 8.2 (4.2, 12.2) | |
| Other/mixed | 77 | 14.0 (10.3, 17.7) | 420 | 79.5 (74.0, 85.0) | 39 | 6.5 (3.1, 9.9) | |
| Serum cotininec | <1 ng/mL | 958 | 12.8 (11.5, 14.0) | 6115 | 80.2 (78.1, 82.3) | 538 | 7.1 (4.9, 9.2) |
| 1 to 10 ng/mL | 50 | 10.2 (6.2, 14.2) | 393 | 81.8 (76.5, 87.2) | 30 | 8.0 (4.2, 11.7) | |
| >10 ng/mL | 297 | 10.2 (8.7, 11.8) | 2387 | 85.0 (82.7, 87.2) | 130 | 4.8 (2.9, 6.8) | |
| Body mass index | <25 kg/m2 | 354 | 11.5 (10.1, 12.8) | 2552 | 82.1 (79.1, 85.0) | 193 | 6.5 (4.2, 8.7) |
| 25–29 kg/m2 | 414 | 11.6 (9.9, 13.3) | 3083 | 81.6 (79.6, 83.7) | 247 | 6.8 (4.7, 8.9) | |
| ≥30 kg/m2 | 537 | 12.9 (11.2, 14.6) | 3260 | 80.8 (78.5, 83.2) | 258 | 6.3 (4.0, 8.6) | |
| Respiratory conditionc | No | 1018 | 10.6 (9.6, 11.6) | 8120 | 82.8 (80.7, 85.0) | 637 | 6.6 (4.5, 8.7) |
| Yes | 287 | 25.1 (21.7, 28.6) | 775 | 69.1 (65.1, 73.0) | 61 | 5.8 (3.1, 8.5) | |
| Cardiovascular conditionc | No | 1121 | 11.7 (10.6, 12.8) | 7971 | 81.8 (79.6, 84.0) | 618 | 6.5 (4.5, 8.6) |
| Yes | 184 | 15.5 (12.2, 18.9) | 924 | 78.0 (74.5, 81.4) | 80 | 6.5 (3.7, 9.3) | |
NHANES = National Health and Nutrition Examination Survey; CI = confidence interval.
a
Unweighted sample N.
b
Percents are corrected for survey design, are row percents, and may not sum to 100 due to rounding.
c
Significant (p<0.05) Pearson’s chi-squared test corrected for survey design, comparing the characteristic to activity change.