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lsm()

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Welcome to thelsmpackage!

When the values of the outcome variable Y are either 0 or 1, thefunction calculates the estimation of the log likelihood in thesaturated model. This model is characterized by Llinas (2006,ISSN:2389-8976) in section 2.3 through the assumptions 1 and 2. If isdichotomous and the data are grouped in J populations, it is recommendedto use the function because it works very well for all .

Details

The saturated model is characterized by the assumptions 1 and 2presented in section 2.3 by Llinas (2006, ISSN:2389-8976).

Installation

install.packages("lsm")library(lsm)

Example Usage

Hosmer, D. (2013) page 3: Age and coranary Heart Disease (CHD) Statusof 20 subjects:

library(lsm)  AGE <- c(20,23,24,25,25,26,26,28,28,29,30,30,30,30,30,30,30,32,33,33)  CHD <- c(0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0)    data <- data.frame (CHD,  AGE )  lsm(CHD ~ AGE , family=binomial, data)    ## For more ease, use the following notation.    lsm(y~., data)

# Other case.

   y <- c(1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1)  x1 <- c(2, 2, 2, 5, 5, 5, 5, 8, 8, 11, 11, 11)   data <- data.frame (y, x1)  ELAINYS <-lsm(y ~ x1, family=binomial, data)  summary(ELAINYS)

# Other case.

  y <- as.factor(c(1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1))  x1 <- as.factor(c(2, 2, 2, 5, 5, 5, 5, 8, 8, 11, 11, 11))   data <- data.frame (y, x1)  ELAINYS1 <-lsm(y ~ x1, family=binomial, data)  confint(ELAINYS1)

References

[1] Humberto Jesus Llinas. (2006). Accuracies in the theory of thelogistic models. Revista Colombiana De Estadistica,29(2), 242-244.

[2] Hosmer, D. (2013). Wiley Series in Probability and StatisticsSer. : Applied Logistic Regression (3). New York: John Wiley & Sons,Incorporated.

[3] Chambers, J. M. and Hastie, T. J. (1992) Statistical Models in S.Wadsworth & Brooks/Cole.

Author(s)

Humberto Llinas Solano [aut], Universidad del Norte,Barranquilla-Colombia \ Omar Fabregas Cera [aut], Universidad del Norte,Barranquilla-Colombia \ Jorge Villalba Acevedo [cre, aut], UniversidadTecnológica de Bolívar, Cartagena-Colombia.

If you found any ERRORS or have SUGGESTIONS, please report them to myemail. Thanks.