riskscorer provides an interface for calculation of clinical risk scores
At the moment the following score are implemented
The following will be added in a future release:
Eventually
In this simple example known data of a potential patient is entered as arguments.
calc_sts(proc_cabg = TRUE,
proc_valve = "avr",
gender = "male",
age = 60,
lvef = 35,
weight_kg = 65,
height_cm = 185,
chf_2w = "yes")
# Source: local data frame [1 x 10]
#
# Procedure Mortality Morbidity_Mortality DSW_Infection Long_LOS Perm_Stroke Prolong_Vent Renal_failure Reoperation Short_LOS
# (chr) (dbl) (dbl) (dbl) (dbl) (dbl) (dbl) (dbl) (dbl) (dbl)
# 1 AV Replacement + CAB 0.01415 0.11393 0.00168 0.04453 0.00878 0.06237 0.01895 0.06435 0.51145
Coding can differ for factor variables. Simple heuristics translate common clinical factor codings. For example "Female", "female" or "f" will all be detected as female gender. Boolean variables such as '0', '1', 'True', 'T', "Y", "Yes" will be detected. Documentation about coding and interpretation is available for every score component.
calc_sts(proc_cabg = TRUE,
proc_valve = "avr",
gender = "m",
age = 60,
lvef = 35,
weight_kg = 65,
height_cm = 185,
chf_2w = 1)
Source: local data frame [1 x 10]
# Procedure Mortality Morbidity_Mortality DSW_Infection Long_LOS Perm_Stroke Prolong_Vent Renal_failure Reoperation
# (chr) (dbl) (dbl) (dbl) (dbl) (dbl) (dbl) (dbl) (dbl)
# 1 AV Replacement + CAB 0.01415 0.11393 0.00168 0.04453 0.00878 0.06237 0.01895 0.06435
# Variables not shown: Short_LOS (dbl)
Thanks to the fantastic plumber package, every score calculation function can be easily used as a web service. Each risk score has its dedicated self contained R source file, such as R/sts.R.
Setting up a web service is as easy as running the following lines of code:
service <- plumber::plumb("R/sts.R")
service$run(port = 8080)
The hosting of such a service is well documented at the plumber documentation.
Pre-release versions can be installed from this repository via
if (!require("devtools")) install.packages("devtools")
devtools::install_github("meyera/riskscorer")
A CRAN release will follow.
Alexander Meyer
The MIT License (MIT)
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