- method
The population-generation method to use. Either "virtual
individuals" or "direct resampling." Short names may be used: "d" or "dr"
for "direct resampling", and "v" or "vi" for "virtual individuals".
- nsamp
The desired number of individuals in the virtual population.
nsamp need not be provided if gendernum is provided.
- gendernum
Optional: A named list giving the numbers of male and
female individuals to include in the population, e.g. list(Male=100,
Female=100). Default is NULL, meaning both males and females are included,
in their proportions in the NHANES data. If both nsamp and
gendernum are provided, they must agree (i.e., nsamp must be
the sum of gendernum).
- agelim_years
Optional: A two-element numeric vector giving the
minimum and maximum ages (in years) to include in the population. Default is
c(0,79). If only a single value is provided, both minimum and maximum ages
will be set to that value; e.g. agelim_years=3 is equivalent to
agelim_years=c(3,3). If agelim_years is provided and
agelim_months is not, agelim_years will override the default
value of agelim_months.
- agelim_months
Optional: A two-element numeric vector giving the
minimum and maximum ages (in months) to include in the population. Default
is c(0, 959), equivalent to the default agelim_years. If only a
single value is provided, both minimum and maximum ages will be set to that
value; e.g. agelim_months=36 is equivalent to
agelim_months=c(36,36). If agelim_months is provided and
agelim_years is not, agelim_months will override the default
values of agelim_years.
- weight_category
Optional: The weight categories to include in the
population. Default is c('Underweight', 'Normal', 'Overweight',
'Obese'). User-supplied vector must contain one or more of these strings.
- gfr_category
The kidney function categories to include in the
population. Default is c('Normal','Kidney Disease', 'Kidney Failure')
to include all kidney function levels.
- reths
Optional: a character vector giving the races/ethnicities to
include in the population. Default is c('Mexican American','Other
Hispanic','Non-Hispanic White','Non-Hispanic Black','Other'), to include
all races and ethnicities in their proportions in the NHANES data.
User-supplied vector must contain one or more of these strings.
- gfr_resid_var
TRUE to add residual variability to GFR predicted from serum creatinine; FALSE to not add residual variability
- ckd_epi_race_coeff
TRUE to use the CKD-EPI equation as originally published (with a coefficient changing predicted GFR for individuals identified as "Non-Hispanic Black"); FALSE to set this coefficient to 1.