Modeling acute respiratory illness during the 2007 San Diego wildland fires using a coupled emissions-transport system and generalized additive modeling

Table 1 Terms tested for model development

Model term	Units	County region	Sub region	Nonlinear
Model term	Units	Model	Model	Nonlinear
Particulates of Wildfire Origin	μg/m ³	True	True	False
Anthropogenic PM2.5	μg/m ³	True	True	True
Mean Daily Relative Humidity	Percent	True	True	True*
Min/Max Daily Relative Humidity	Percent	False	False	NA
Minimum Daily Temperature	F	True	True	True*
Mean/Max Daily Temperature	F	False	False	NA
Proportion Income > $50 k	NA	False	True	False
Proportion Age <24	NA	False	True	False
Is Monday	NA	True	True	NA
Is Tuesday	NA	True	True	NA
Is Wednesday	NA	False	False	NA
Is Thursday	NA	False	False	NA
Is Friday	NA	False	False	NA
Is Saturday	NA	False	False	NA
Is Sunday	NA	False	False	NA
Is SR1	NA	False	False	NA
Is SR2	NA	False	False	NA
Is SR3	NA	False	True	NA
Is SR4	NA	False	False	NA
Is SR5	NA	False	False	NA
Is SR6	NA	False	True	NA
Housing/Population Density	NA	False	False	NA
Mean Elevation	meters	False	False	NA

Included terms, leading to the final model formulations for San Diego County, are indicated by ‘True’.
*Relative Humidity and Temperature combined as a bivariate nonlinear function.

ISSN: 1476-069X