hct_h: KDE bandwidths for residual variability in hematocrit
In httk: High-Throughput Toxicokinetics
hct_h R Documentation
KDE bandwidths for residual variability in hematocrit
Description
Bandwidths used for a one-dimensional kernel density estimation of the
distribution of residual errors around smoothing spline fits of hematocrit vs.
age for NHANES respondents in each of ten combinations of sex and
race/ethnicity categories.
Usage
hct_h
Format
A named list with 10 elements, each a numeric value. Each list element
corresponds to, and is named for, one combination of NHANES sex categories
(Male and Female) and NHANES race/ethnicity categories (Mexican American,
Other Hispanic, Non-Hispanic White, Non-Hispanic Black, and Other).
Details
Each matrix is the standard deviation for a normal distribution: this is the
bandwidth to be used for a kernel density estimation (KDE) (using a normal
kernel) of the distribution of residual errors around smoothing spline fits of
hematocrit vs. age for NHANES respondents in the specified sex and
race/ethnicity category. Optimal bandwidths were pre-calculated by doing the
smoothing spline fits, getting the residuals, then calling
kde on the residuals (which calls hpi to
compute the plug-in bandwidth).
Used by HTTK-Pop only in "virtual individuals" mode (i.e.
httkpop_generate with method = "v"), in
estimate_hematocrit.
Author(s)
Caroline Ring
References
Ring, Caroline L., et al. "Identifying populations sensitive to
environmental chemicals by simulating toxicokinetic variability."
Environment International 106 (2017): 105-118
httk documentation built on March 7, 2023, 7:26 p.m.
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| hct_h | R Documentation |
KDE bandwidths for residual variability in hematocrit
Description
Bandwidths used for a one-dimensional kernel density estimation of the distribution of residual errors around smoothing spline fits of hematocrit vs. age for NHANES respondents in each of ten combinations of sex and race/ethnicity categories.
Usage
hct_h
Format
A named list with 10 elements, each a numeric value. Each list element corresponds to, and is named for, one combination of NHANES sex categories (Male and Female) and NHANES race/ethnicity categories (Mexican American, Other Hispanic, Non-Hispanic White, Non-Hispanic Black, and Other).
Details
Each matrix is the standard deviation for a normal distribution: this is the
bandwidth to be used for a kernel density estimation (KDE) (using a normal
kernel) of the distribution of residual errors around smoothing spline fits of
hematocrit vs. age for NHANES respondents in the specified sex and
race/ethnicity category. Optimal bandwidths were pre-calculated by doing the
smoothing spline fits, getting the residuals, then calling
kde on the residuals (which calls hpi to
compute the plug-in bandwidth).
Used by HTTK-Pop only in "virtual individuals" mode (i.e.
httkpop_generate with method = "v"), in
estimate_hematocrit.
Author(s)
Caroline Ring
References
Ring, Caroline L., et al. "Identifying populations sensitive to environmental chemicals by simulating toxicokinetic variability." Environment International 106 (2017): 105-118
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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