Description of SIS-C Supplementary Figures
Figures S1 – S7 show kernel density plots of each SIS-C subscale’s factor score (filled black
curves) with equivalently parameterized kernel density plots of each parceled indicator (red,
green, and blue curves) overlaid. Within each SIS-C subscale, these plots are broken down by
age bands. Following the recommendations of Harpole, Woods, Rodebaugh, Levinson, and
Lenze (2014), all densities were estimated with an Epanechnikov kernel using the SheatherJones Direct Plug-In method (Sheather & Jones, 1991) to estimate the bandwidth.
References
Harpole, J. K., Woods, C. M., Rodebaugh, T. L., Levinson, C. A., & Lenze, E. J. (2014). How
bandwidth selection algorithms impact exploratory data analysis using kernel density
estimation. Psychological methods, 19, 428 – 443.
Sheather, S. J., & Jones, M. C. (1991). A reliable data-based bandwidth selection method for
kernel density estimation. Journal of the Royal Statistical Society. Series B
(Methodological), 53, 683 – 690.