Table 3.
Simulation study results: median bias, average 95% confidence interval (C.I.) width, and root mean squared error for PM10–2.5 relative risk in Clark County, Nevada. At-risk population is allocated to each monitor either equally (Scenario 1) or proportional to the city population that the monitor is in (Scenario 2). Exposure measures considered include: TM or ME modeling without (ME) or with (WME) heteroskedastic variances
| Scenario 1 |
Scenario 2 |
|||||
| True | TM | ME | True | TM | WME | |
| Bias (× 104) | – 0.02 | – 0.39 | – 0.18 | – 0.01 | – 0.33 | – 0.16 |
| C.I. width (× 104) | 1.62 | 3.11 | 3.93 | 1.94 | 3.04 | 3.03 |