Daily mortality and air pollution in The Netherlands
Hoek, G
HERO ID
42818
Reference Type
Technical Report
Subtype
HEI
Year
2003
Language
English
| HERO ID | 42818 |
|---|---|
| Material Type | HEI |
| Year | 2003 |
| Title | Daily mortality and air pollution in The Netherlands |
| Book Title | Revised analyses of time-series studies of air pollution and health |
| Authors | Hoek, G |
| Publisher Text | Health Effects Institute |
| City | Boston, MA |
| Page Numbers | 133-141 |
| Abstract | We recently reported an association between daily fluctuations in ambient air pollution and daily mortality in the Netherlands. To adjust for long-term time trends and seasonal variation, we used generalized additive models (GAMs*). The use of GAM has been questioned because of inappropriate convergence criteria and underestimation of standard errors. We performed a reanalysis of the data to test whether the conclusions were sensitive to the convergence criteria in S-Plus and replacement of the GAM model by a natural spline (ns) function, which is assumed to give correct standard errors. Air pollution effect estimates were in general very similar between the two GAMs (default and strict convergence criteria) and natural spline models. Standard errors of the natural spline model were between 10% and 25% higher. The specification of stricter convergence criteria and the use of natural splines instead of GAM did not change any of the conclusions drawn in the two original papers. |
| Url | https://www.healtheffects.org/system/files/TimeSeries.pdf |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Relationship(s) |