hct_h: KDE bandwidths for residual variability in hematocrit

hct_hR 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

\insertRef

ring2017identifyinghttk


httk documentation built on Sept. 11, 2024, 9:32 p.m.