Table 2 Descriptive statistics of endotoxin and air pollutant exposures by region
From: Personal endotoxin exposure in a panel study of school children with asthma
| Â | Riverside | Whittier | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Exposure | N1 | Mean (SD) | Median | IQR. | Min/Max | N1 | Mean (SD) | Median | IQR. | Min/Max |
Endotoxin (EU/m3) | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Personal | 94 | 2.30 (3.88) | 1.01 | 2.25 | 0.003/20.6 | 282 | 1.92 (3.67) | 0.48 | 1.97 | 0.002/25.3 |
   Indoor | 31 | 0.58 (0.42) | 0.43 | 0.68 | 0.063/1.72 | 78 | 1.49 (1.29) | 1.10 | 0.86 | 0.13/7.5 |
   Outdoor | 35 | 1.46 (1.67) | 0.78 | 1.5 | 0.12/7.90 | 76 | 0.85 (1.18) | 0.55 | 0.89 | 0.11/9.5 |
   Ambient | 34 | 1.26 (1.17) | 0.73 | 0.88 | 0.30/4.56 | 63 | 0.55 (0.45) | 0.45 | 0.46 | 0.048/2.51 |
Personal Air Pollution and Weather | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   PM2.5 (μg/m3) | 103 | 30.9 (20.1) | 24.7 | 26.8 | 6.6/98.4 | 299 | 36.4 (26.8) | 29.1 | 21.9 | 7.6/220.0 |
   EC (μg/m3) | 132 | 0.43 (0.61) | 0.39 | 0.32 | 0.04/6.94 | 295 | 0.76 (1.32) | 0.47 | 0.82 | 0.001/17.2 |
   OC (μg/m3) | 132 | 5.95 (2.62) | 5.63 | 3.48 | 1.94/16.1 | 301 | 6.83 (3.41) | 6.43 | 4.05 | 2.18/31.5 |
   NO2 (ppb) | 147 | 23.3 (9.3) | 23.4 | 12.7 | 5.16/47.6 | 313 | 30.6 (14.4) | 28.4 | 18.9 | 2.7/105.7 |
   Temperature (°C) | 147 | 26.8 (2) | 27.2 | 3.1 | 22.8/32.1 | 313 | 24.8 (2.7) | 25.4 | 3.5 | 17.3/30.5 |
   Relative Humidity (%) | 147 | 43.9 (8.7) | 40.6 | 14.8 | 28.6/64.0 | 312 | 49.8 (7.0) | 50.4 | 7.75 | 25.2/66.6 |
Indoor Air Pollution and Weather | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   PM2.5 (μg/m3) | 38 | 14.9 (8.4) | 8.5 | 14.6 | 5.1/33.8 | 77 | 17.4 (10.6) | 16.5 | 8.35 | 3.59/83.2 |
   EC (μg/m3) | 37 | 0.71 (0.30) | 0.56 | 0.41 | 0.17/1.3 | 79 | 0.80 (0.92) | 0.62 | 0.54 | 0.14/7.75 |
   OC (μg/m3) | 37 | 6.2 (1.82) | 5.46 | 2.74 | 3.17/11.6 | 79 | 5.95 (2.37) | 5.30 | 2.27 | 2.64/13.5 |
   Temperature (°C) | 40 | 28.7 (1.7) | 29.3 | 2.2 | 24.6/31.7 | 75 | 25.6 (2.87) | 25.8 | 3.52 | 19.8/33.8 |
   Relative Humidity (%) | 40 | 30.2 (10.3) | 24.6 | 13.9 | 16.7/50.6 | 75 | 49.2 (7.21) | 51.0 | 8.16 | 32.3/62.1 |
Outdoor Air Polution | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   PM2.5 (μg/m3) | 38 | 27.0 (18.6) | 15.6 | 19.4 | 9.3/71.8 | 77 | 19.3 (13.5) | 16.4 | 8.46 | 3.18/84.3 |
   EC (μg/m3) | 38 | 1.10 (0.36) | 1.07 | 0.43 | 0.50/2.08 | 79 | 0.99 (1.41) | 0.71 | 0.62 | 0.21/12.5 |
   OC (μg/m3) | 38 | 6.21 (1.26) | 6.07 | 1.57 | 3.78/9.66 | 79 | 4.54 (1.89) | 4.24 | 2.63 | 2.05/10.3 |
Ambient Air Pollution and Weather | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   PM2.5 (μg/m3) | 40 | 31.5 (22.1) | 17.4 | 30.1 | 9.5/87.2 | 76 | 17.8 (12.0) | 16.0 | 8.85 | 2.77/77.1 |
   EC (μg/m3) | 35 | 1.55 (0.71) | 1.30 | 0.86 | 0.52/3.64 | 76 | 0.69 (0.44) | 0.59 | 0.45 | 0.14/2.95 |
   OC (μg/m3) | 35 | 6.7 (1.69) | 6.07 | 1.91 | 4.11/11.6 | 76 | 3.89 (1.49) | 3.73 | 2.07 | 1.64/8.8 |
   NO2 (ppb) | 40 | 26.8 (9.9) | 26.2 | 12.3 | 11.6/54.8 | 79 | 27.7 (10.8) | 26.0 | 11.6 | 12.0/74.1 |
   O3 (ppb) | 40 | 77.9 (19.7) | 74.5 | 25.9 | 33.4/120.8 | 79 | 40.7 (14.1) | 38.9 | 18.5 | 11.1/79.2 |
   Temperature (°C) | 40 | 24.4 (3.6) | 25.4 | 6.05 | 17.3/30.1 | 79 | 20.7 (3.59) | 21.2 | 5.5 | 11.7/27.8 |
   Relative Humidity (%) | 40 | 27.4 (16.2) | 23.0 | 29 | 2.0/61.0 | 79 | 39.7 (9.64) | 42.0 | 12.0 | 6.0/61.0 |