Age- and sex-adjusted mean remote-sensing-derived estimates of concentrations PM2.5 (2001–2006) according to sociodemographic characteristics among participants of the 2003 Canadian Community Health Survey, for Canada and Ontario
| Characteristic | Canada (n=122 548) | Ontario (n=40 403) | ||||
| n | Mean (μg/m3) | 95% CI | n | Mean (μg/m3) | 95% CI | |
| Highest level of education | ||||||
| Grade 8 or lower | 18 000 | 7.55 | 7.50 to 7.60 | 4945 | 11.11 | 11.01 to 11.22 |
| Grade 9–10 | 13 589 | 7.50 | 7.44 to 7.56 | 4046 | 10.91 | 10.79 to 11.02 |
| Grade 11–13 | 7237 | 7.83 | 7.74 to 7.91 | 2645 | 11.14 | 11.00 to 11.29 |
| Secondary graduation | 20 779 | 8.05 | 8.00 to 9.10 | 7549 | 11.36 | 11.27 to 11.44 |
| Some postsecondary | 8353 | 7.93 | 7.85 to 8.01 | 2670 | 11.35 | 11.20 to 11.49 |
| Trade certificate/diploma | 13 886 | 7.27 | 7.20 to 7.33 | 3358 | 10.82 | 10.69 to 10.95 |
| College certificate/diploma | 18 467 | 8.35 | 8.29 to 8.40 | 7400 | 11.25 | 11.16 to 11.33 |
| University (<Bachelor's) | 3261 | 8.25 | 8.12 to 8.38 | 1047 | 11.62 | 11.38 to 11.85 |
| University (Bachelor) | 11 987 | 8.60 | 8.53 to 8.66 | 4186 | 12.03 | 11.92 to 12.16 |
| University (>Bachelor) | 5011 | 9.00 | 8.89 to 9.10 | 2016 | 12.16 | 11.99 to 12.33 |
| Missing | 1978 | 541 | ||||
| Marital status | ||||||
| Married | 53 290 | 7.91 | 7.88 to 7.94 | 18 997 | 11.25 | 11.20 to 11.31 |
| Common law | 9061 | 7.53 | 7.45 to 7.61 | 2010 | 10.60 | 10.45 to 10.79 |
| Widowed | 11 929 | 7.87 | 7.79 to 7.95 | 3964 | 11.26 | 11.12 to 11.40 |
| Separated | 3825 | 7.96 | 7.84 to 8.07 | 1334 | 11.12 | 10.91 to 11.32 |
| Divorced | 7834 | 8.07 | 7.99 to 8.15 | 2484 | 11.49 | 11.34 to 11.64 |
| Single | 36 410 | 8.07 | 8.03 to 8.12 | 11 596 | 11.54 | 11.45 to 11.63 |
| Missing | 199 | 35 | ||||
| Household income (C$) | ||||||
| None | 254 | 8.60 | 8.14 to 9.05 | 115 | 11.41 | 10.71 to 12.11 |
| <5000 | 815 | 7.24 | 6.99 to 7.50 | 214 | 11.07 | 10.56 to 11.59 |
| 5000 to <10 000 | 2688 | 7.44 | 7.30 to 7.58 | 621 | 10.95 | 10.65 to 11.25 |
| 10 000 to <15 000 | 7348 | 7.48 | 7.39 to 7.56 | 1981 | 10.95 | 10.78 to 11.12 |
| 15 000 to <20 000 | 6305 | 7.52 | 7.43 to 7.61 | 1734 | 10.94 | 10.76 to 11.12 |
| 20 000 to <30 000 | 13 001 | 7.68 | 7.61 to 7.74 | 3957 | 11.03 | 10.91 to 11.15 |
| 30 000 to <40 000 | 13 101 | 7.83 | 7.77 to 7.90 | 4109 | 11.24 | 11.12 to 11.35 |
| 40 000 to <50 000 | 10 953 | 7.93 | 7.86 to 8.00 | 3612 | 11.18 | 11.05 to 11.30 |
| 50 000 to <60 000 | 10 327 | 7.97 | 7.90 to 8.04 | 3515 | 11.20 | 11.08 to 11.33 |
| 60 000 to <80 000 | 15 886 | 8.09 | 8.03 to 8.15 | 5872 | 11.23 | 11.13 to 11.33 |
| 80 000+ | 23 428 | 8.60 | 8.55 to 8.64 | 9892 | 11.59 | 11.51 to 11.66 |
| Missing | 18 442 | 4781 | ||||
| Canadian-born | ||||||
| Yes | 1 04 813 | 7.59 | 7.57 to 7.61 | 31 874 | 10.80 | 10.75 to 10.84 |
| No | 15 679 | 10.21 | 10.15 to 10.26 | 8033 | 13.36 | 13.28 to 13.44 |
| <5 years in Canada | 3114 | 10.77 | 10.58 to 10.95 | 1481 | 14.47 | 14.26 to 14.68 |
| 5 to <10 years in Canada | 3639 | 10.68 | 10.53 to 10.84 | 1826 | 14.12 | 13.94 to 14.29 |
| 10+ years in Canada | 8881 | 9.73 | 9.63 to 9.84 | 4703 | 12.55 | 12.44 to 12.67 |
| Unknown | 45 | 23 | ||||
| Missing | 2056 | 496 | ||||
N, number of participants.