Deficit Index (DI) R package di version 1.1.4 A set of utilities for calculating the Deficit (frailty) Index (DI) in gerontological studies. The deficit index was first proposed by Arnold Mitnitski and Kenneth Rockwood and represents a proxy measure of aging and also can be served as a sensitive predictor of survival. For more information, see (i)"Accumulation of Deficits as a Proxy Measure of Aging" by Arnold B. Mitnitski et al. (2001), The Scientific World Journal 1, <DOI:10.1100/tsw.2001.58>; (ii) "Frailty, fitness and late-life mortality in relation to chronological and biological age" by Arnold B Mitnitski et al. (2001), BMC Geriatrics2002 2(1), <DOI:10.1186/1471-2318-2-1>. Software Depends: R (>= 3.3) Imports: scales Suggests: knitr, rmarkdown Ilya Y. Zhbannikov <ilya.zhbannikov@duke.edu> Comprehensive R Archive Network (CRAN) Ilya Y. Zhbannikov [aut, cre] GPL-3 2018-04-11 application/tgz https://CRAN.R-project.org/package=di doi:10.32614/CRAN.package.di