mohamed-albirair / my-r-functions

Functions to automate common analyses

my-R-functions

Functions to automate common analyses.

To use any of the functions below, simply run the source() command and input the corresponding URL (hyperlink) as an argument, as demonstrated below:

# R code:
source(<URL>)

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Misc Functions

• %!in%: "not in"

• missSummary: report missingness summary

source("https://raw.githubusercontent.com/Mohamed-Albirair/my-R-functions/main/missSummary.R")
missSummary(data)

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Extracting Regression Analysis Outputs

Regression Model Output

• reportModelOutputKnitr

  • Can work for single-, multi-level, linear and non-linear models!

source("https://raw.githubusercontent.com/Mohamed-Albirair/my-R-functions/main/reportModelOutputKnitr.R")
mod <- lm(y ~ a + bx, data) # desired regression model
reportModelOutputKnitr(mod) # report output

Report Absolute Fitted Values

• calAbsFitValue

source("calAbsFitValue")
mod <- glm(y ~ a + bx, data, family = <binomial, poisson... etc.>) # desired regression model
# report fitted values at point x = 4
calAbsFitValue(model = mod, parms = (e.g., "(Intercept) + a + b * 4"))

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Epi Conversions

• probToRate: from probability to rate

$$r = \frac{-\ln (1 - p)}{t}$$

• rateToProb: from rate to probability

$$p = 1 - exp ^ {(r \times t)}$$

• convTransProb: convert transition probabilities between different time units

$$tp_b = 1 - (1 - tp_a) ^ {b / a}$$