Table 5.
Brief Symptom Inventory Positive Symptom Total (PST) Difference (with 95% Confidence Interval, CI) per Interquartile Increase of Exposures of Interest (NO2 - ppb, O3 - ppb, PM2.5 - μg/m3) In Normative Aging Study, 2000-2014.
| Exposure | Window a | Estimate b (95% CI) Model I c |
Estimate (95% CI) Model II d |
|---|---|---|---|
| NO2 | 1Wk | 0.10 (−0.93, 1.13) | 0.16 (−0.90, 1.22) |
| 4Wk | 0.19 (−1.04, 1.42) | 0.29 (−0.96, 1.54) | |
| 8Wk | 0.14 (−1.14, 1.42) | 0.22 (−1.09, 1.52) | |
| 1Yr | −0.20 (−1.52, 1.12) | −0.27 (−1.61, 1.07) | |
| O3 | 1Wk | −0.21 (−1.01, 0.59) | −0.21 (−1.03, 0.61) |
| 4Wk | −0.43 (−1.35, 0.48) | −0.36 (−1.28, 0.57) | |
| 8Wk | −0.35 (−1.31, 0.61) | −0.29 (−1.27, 0.69) | |
| 1Yr | −0.12 (−1.17, 0.93) | 0.02 (−1.04, 1.09) | |
| PM2.5 | 1Wk | −0.29 (−0.91, 0.32) | −0.30 (−0.92, 0.33) |
| 4Wk | −0.08 (−0.87, 0.70) | −0.12 (−0.92, 0.68) | |
| 8Wk | 0.08 (−0.71, 0.86) | 0.00 (−0.80, 0.81) | |
| 1Yr | −0.26 (−1.67, 1.14) | −0.29 (−1.74, 1.17) |
1Wk, 4Wk, 8Wk and 1Yr means for the exposure windows of average 1 week, 4 weeks, 8 weeks and one year prior to the visit date;
Difference in the scores per Interquartile Increase of Exposures of Interest (NO2 – ppb, O3 - ppb, PM2.5 - μg/m3);
Model I was adjusted for co-exposures, temperature (except for 1 Yr window), relative humidity, calendar year, age, bmi, race (Caucasian or not), education, marital status, season, census tract median household income, census tract median value of house, census tract population density;
Model II was adjusted for the covariates adjusted in Model I plus physical activity (using total metabolic equivalent of task (hours/week)), smoking and drinking.