Type: Package
Package: PJCcalculator
Title: PROs-Joint Contrast (PJC) Calculator
Version: 0.1.3
Authors@R: c(
    person(given = "Ning",      family = "Meng",   email = "nmeng2@jh.edu", role = c("aut", "cre")),
    person(given = "Ji Soo",    family = "Kim",                                role = "aut"),
    person(given = "Ana-Maria", family = "Orbai",                              role = "aut"),
    person(given = "Scott L.",  family = "Zeger",                              role = "aut"))
Description: Computes the Patient-Reported Outcomes (PROs) Joint Contrast (PJC), 
 a residual-based summary that captures information left over after accounting 
 for the clinical Disease Activity index for Psoriatic Arthritis (cDAPSA). 
 PROs (pain and patient global assessment) and joint counts (swollen and tender) 
 are standardized, then each component is adjusted for standardized cDAPSA using 
 natural spline coefficients that were derived from previously published models. 
 The resulting residuals are standardized and combined using fixed principal 
 component loadings, to yield a continuous PJC score and quartile groupings. 
 This package provides a calculator for applying those published coefficients to new datasets; 
 it does not itself estimate spline models or principal components.
License: MIT + file LICENSE
Depends: R (>= 3.6)
Imports: dplyr, splines, rlang
Config/testthat/edition: 3
Encoding: UTF-8
RoxygenNote: 7.3.2
NeedsCompilation: no
Packaged: 2025-09-15 16:06:28 UTC; nmeng2
Author: Ning Meng [aut, cre],
  Ji Soo Kim [aut],
  Ana-Maria Orbai [aut],
  Scott L. Zeger [aut]
Maintainer: Ning Meng <nmeng2@jh.edu>
Repository: CRAN
Date/Publication: 2025-09-21 14:00:07 UTC
Built: R 4.6.0; ; 2026-04-29 06:13:43 UTC; unix
