Table 2.
Descriptive statistics of the National Children’s Study (NCS) Vanguard 2009–2010 urine VOC subsample (n = 488).
| Variable | Frequency | |
|---|---|---|
| N | % | |
| Observed air freshener | ||
| No | 357 | 73.2% |
| Yes | 131 | 26.8% |
| Observed incense | ||
| No | 458 | 93.8% |
| Yes | 30 | 6.2% |
| Observed candles | ||
| No | 237 | 48.6% |
| Yes | 251 | 51.4% |
| Observed other scented products | ||
| No | 373 | 76.4% |
| Yes | 115 | 23.6% |
| Reported gas pumping | ||
| No | 256 | 52.5% |
| Some days | 232 | 47.5% |
| Every day | 0 | 0.0% |
| Reported air freshener use | ||
| No | 135 | 27.7% |
| Some days | 223 | 45.7% |
| Every day | 130 | 26.6% |
| Reported aerosol use | ||
| No | 217 | 44.5% |
| Some days | 173 | 35.4% |
| Every day | 98 | 20.1% |
| Reported paint/varnish use | ||
| No | 373 | 76.4% |
| Some days | 115 | 23.6% |
| Every day | 0 | 0.0% |
| Reported paint thinner use | ||
| No | 484 | 99.2% |
| Some days | 4 | 0.8% |
| Every day | 0 | 0.1% |
| Reported turpentine use | ||
| No | 484 | 99.2% |
| Some days | 4 | 0.8% |
| Every day | 0 | 0.1% |
| 3-day average reported cooking time | ||
| None | 123 | 25.2% |
| <1 h | 211 | 43.2% |
| 1 + h | 154 | 31.2% |
| Smoking exposure | ||
| None | 362 | 74.2% |
| Some | 93 | 19.0% |
| Smoker | 33 | 6.8% |
| Location | ||
| Rural | 243 | 49.8% |
| Urban | 245 | 50.2% |
| Visit observations completed | ||
| T1 | 344 | 70.5% |
| T3-First | 144 | 29.5% |