Table 3. Mean (95% CI) air pollution concentrations measured at the nearest stationary monitoring site on the day of testing stratified by indicators of mental health status among children aged 6 to 17 years old who participated in the Canadian Health Measures Survey, 2007–2009.
| Air Pollutant (mean, 95%CI) | |||
|---|---|---|---|
| NO2 (24-hr mean, ppb) | O3 (8-hr max, ppb) | PM 2.5 (24-hr mean, μg/m3) | |
| Emotional Health Indicators | |||
| Happiness | |||
| Happy n = 1658 | 11.5 (11.1, 11.9) | 29.3 (28.7, 29.9) | 5.6 (5.4, 5.8) |
| Other n = 225 | 12.5 (11.4, 13.6) | 29.6 (27.9, 31.3) | 6.0 (5.5, 6.3) |
| Mood Disorder | |||
| Absent (n = 1770) | 11.3 (9.8, 12.7) | 29.0 (26.8, 31.3) | 5.6 (4.8, 6.4) |
| Present (n = 109) | 11.7 (11.3,12.1) | 29.4 (28.8, 29.9) | 5.6 (5.4, 5.8) |
| SDQ emotional symptoms | |||
| No symptoms (n = 1602) | 11.7 (11.3, 12.1) | 29.0 (28.4, 29.6) | 5.6 (5.4, 5.9) |
| Some symptoms (n = 281) | 11.2 (10.3, 12.1) | 31.4 (30.0, 32.8) | 5.5 (4.9, 6.1) |