The goal of psc is to compare a dataset of observations against a parametric model
You can install the development version of psc from GitHub with:
# install.packages("devtools")
devtools::install_github("richJJackson/psc")This is a basic example which shows you how to solve a common problem:
library(psc)
library(survival)
## basic example code
### Load model
data("surv.mod")
### Load Data
data("data")
### Use 'pscfit' to compare
surv.psc <- pscfit(surv.mod,data)
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summary(surv.psc)
#> Summary:
#>
#> 100 observations selected from the data cohort for comparison
#> CFM of type flexsurvreg identified
#> linear predictor succesfully obtained with median:
#> trt: 3.15
#> Average expected response:
#> trt: 9.1
#> Average observed response: 6.366
#>
#> Counterfactual Model (CFM):
#> A model of class 'flexsurvreg'
#> Fit with 3 internal knots
#>
#> Formula:
#> Surv(time, cen) ~ vi/age60 + ecog + allmets + logafp + alb +
#> logcreat + logast + aet
#> <environment: 0x11a95d660>
#>
#> Call:
#> CFM model + beta
#>
#> Coefficients:
#> median 2.5% 97.5% Pr(x<0) Pr(x>0)
#> beta 0.3574 0.1204 0.5801 0.0004 0.9996
#> DIC 280.8601 273.6541 291.9444 NA NA… and to see a plot of what you have done
In that case, don’t forget to commit and push the resulting figure files, so they display on GitHub and CRAN.