Table 3.
Brief Symptom Inventory Positive Symptom Distress Index (PSDI) T Score 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 Ic |
Estimate (95% CI) Model II d |
|---|---|---|---|
| NO2 | 1Wk | 1.60 (0.31, 2.89) | 1.46 (0.12, 2.80) |
| 4Wk | 1.71 (0.18, 3.23) | 1.53 (−0.04, 3.10) | |
| 8Wk | 1.51 (−0.09, 3.11) | 1.31 (−0.34, 2.95) | |
| 1Yr | 1.39 (−0.27, 3.04) | 1.08 (−0.63, 2.80) | |
| O3 | 1Wk | 1.66 (0.68, 2.65) | 1.62 (0.60, 2.64) |
| 4Wk | 1.36 (0.23, 2.49) | 1.33 (0.18, 2.49) | |
| 8Wk | 0.91 (−0.27, 2.09) | 0.93 (−0.29, 2.15) | |
| 1Yr | 1.04 (−0.31, 2.39) | 1.06 (−0.31, 2.43) | |
| PM2.5 | 1Wk | −0.54 (−1.29, 0.21) | −0.48 (−1.25, 0.30) |
| 4Wk | −0.16 (−1.14, 0.83) | −0.11 (−1.12, 0.90) | |
| 8Wk | 0.34 (−0.67, 1.35) | 0.34 (−0.71, 1.39) | |
| 1Yr | −1.00 (−2.73, 0.74) | −0.92 (−2.73, 0.89) |
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.