Table 4.
Associations between PM 2.5 mass, EC and OC and cardiac responses
| Response | Study | Component | Change per IQR | SEM | p -value | Change per 1 μg/m3 CI (lower, upper) |
|---|---|---|---|---|---|---|
|
Heart rate |
1 |
PM2.5 |
2.757 |
1.502 |
0.068 |
-- |
| |
|
EC |
7.059 |
0.885 |
<.0001 |
28.1, 36.1 |
| |
|
OC |
-1.845 |
1.431 |
0.199 |
-- |
| |
2 |
PM2.5 |
1.343 |
1.635 |
0.412 |
-- |
| |
|
EC |
8.354 |
1.454 |
<.0001 |
19.7, 28.1 |
| |
|
OC |
0.879 |
1.107 |
0.428 |
-- |
| |
3 |
PM2.5 |
0.719 |
1.344 |
0.593 |
-- |
| |
|
EC |
3.649 |
0.974 |
0.000 |
8.1, 14.1 |
| |
|
OC |
-5.489 |
1.543 |
0.000 |
-2.4 |
| |
4 |
PM2.5 |
1.086 |
1.375 |
0.431 |
-- |
| |
|
EC |
5.985 |
1.350 |
<.0001 |
20.1, 31.9 |
| |
|
OC |
1.916 |
1.266 |
0.131 |
-- |
|
lnSDNN |
1 |
PM2.5 |
0.094 |
0.026 |
0.000 |
0.0615, 0.0619 |
| |
|
EC |
-0.031 |
0.018 |
0.086 |
-- |
| |
|
OC |
0.001 |
0.026 |
0.955 |
-- |
| |
2 |
PM2.5 |
0.016 |
0.034 |
0.639 |
-- |
| |
|
EC |
-0.061 |
0.031 |
0.053 |
-- |
| |
|
OC |
-0.009 |
0.023 |
0.693 |
-- |
| |
3 |
PM2.5 |
0.024 |
0.029 |
0.415 |
-- |
| |
|
EC |
0.006 |
0.020 |
0.774 |
-- |
| |
|
OC |
-0.038 |
0.032 |
0.240 |
-- |
| |
4 |
PM2.5 |
0.022 |
0.027 |
0.406 |
-- |
| |
|
EC |
-0.051 |
0.024 |
0.039 |
-0.2202, -0.2198 |
| |
|
OC |
0.016 |
0.022 |
0.474 |
-- |
|
lnRMSSD |
1 |
PM2.5 |
0.001 |
0.017 |
0.942 |
-- |
| |
|
EC |
-0.048 |
0.011 |
<.0001 |
-0.267, -0.167 |
| |
|
OC |
-0.011 |
0.016 |
0.494 |
-- |
| |
2 |
PM2.5 |
0.019 |
0.016 |
0.236 |
-- |
| |
|
EC |
-0.023 |
0.015 |
0.127 |
-- |
| |
|
OC |
0.007 |
0.011 |
0.541 |
-- |
| |
3 |
PM2.5 |
-0.009 |
0.016 |
0.603 |
-- |
| |
|
EC |
-0.002 |
0.011 |
0.834 |
-- |
| |
|
OC |
0.008 |
0.017 |
0.646 |
-- |
| |
4 |
PM2.5 |
-0.008 |
0.018 |
0.659 |
-- |
| |
|
EC |
-0.039 |
0.017 |
0.022 |
-0.244, -0.096 |
| OC | 0.020 | 0.015 | 0.193 | -- |
Data are expressed as change in heart rate (bpm), lnSDNN (msec) and lnRMSSD (msec), per IQR of pollutant, and per change in 1 μg/m3 of pollutant.