Table 1.
Whistler cohort characteristics [n (%) of nonmissing observations], total population and stratified by sex
| Characteristic | n (%) or mean (SD) | |||
|---|---|---|---|---|
| Child characteristic | Total | Girls | Boys | Not available |
| Sex | 733 | 376 (51.3) | 357 (48.7) | 0 |
| Age (years) | 5.42 (0.4) | 5.41 (0.4) | 5.42 (0.3) | 0 |
| Height (cm) | 115.0 (4.8) | 114.58 (4.8) | 115.45 (4.7) | 117 |
| BMI | 15.2 (1.4) | 15.06 (1.4) | 15.36 (1.4) | 117 |
| SBP (mmHg) | 105.00 (7.5) | 105.03 (7.5) | 104.98 (7.5) | 11 |
| DBP (mmHg) | 54.4 (7.2) | 54.29 (7.4) | 54.43 (7.1) | 11 |
| cIMT (μm) | 385.6 (39.5) | 381.8 (37.5) | 389.3 (40.9) | 73 |
| EM (kPa) | 159.3 (49.0) | 156.2 (46.0) | 162.6 (52.0) | 187 |
| cD (MPa−1) | 81.0 (13.0) | 80.1 (13.0) | 81.97 (13.0) | 157 |
| Parental Characteristic | ||||
| Parental higher SES | 178 | |||
| None | 132 (23.7) | 64 (21.8) | 68 (26.0) | |
| One parent | 157 (28.3) | 86 (29.4) | 71 (27.1) | |
| Both parents | 268 (48.0) | 143 (48.8) | 123 (46.9) | |
| Exposed to smoke during pregnancy | 51 (7.0) | 26 (7.0) | 25 (7.1) | 12 |
| Exposed to smoke later in life | 44 (6.1) | 25 (6.8) | 19 (5.4) | 18 |
| Exposures | ||||
| NO2 (μg/m3) | 29.47 (2.1) | 29.47 (2.1) | 29.47 (2.1) | 0 |
| NOx (μg/m3) | 35.34 (6.2) | 35.20 (6.1) | 35.50 (6.3) | 0 |
| PM2.5 (μg/m3) | 16.71 (0.2) | 16.71 (0.2) | 16.72 (0.2) | 0 |
| PM10 (μg/m3) | 25.03 (0.6) | 25.03 (0.6) | 25.04 (0.6) | 0 |
| PM2.5 absorbance (10−5/m) | 1.32 (0.1) | 1.32 (0.1) | 1.32 (0.1) | 0 |