Summary method for objects from class ‘pram’ to provide information about transitions.
# S3 method for pram
summary(object, ...)object from class ‘pram’
Additional arguments passed through.
The summary of object from class ‘pram’.
Shows various information about the transitions.
Templ, M. Statistical Disclosure Control for Microdata Using the R-Package sdcMicro, Transactions on Data Privacy, vol. 1, number 2, pp. 67-85, 2008. http://www.tdp.cat/issues/abs.a004a08.php
data(free1)
x <- as.factor(free1[,"MARSTAT"])
x2 <- pram(x)
x2
#> Number of changed observations:
#> - - - - - - - - - - -
#> x != x_pram : 264 (6.6%)
summary(x2)
#> Variable: x
#>
#> ----------------------
#>
#> Frequencies in original and perturbed data:
#> x 1 2 3 4 NA
#> 1: Original Frequencies 2547 162 171 1120 0
#> 2: Frequencies after Perturbation 2557 167 165 1111 0
#>
#> Transitions:
#> transition Frequency
#> 1: 1 --> 1 2471
#> 2: 1 --> 2 8
#> 3: 1 --> 3 8
#> 4: 1 --> 4 60
#> 5: 2 --> 1 12
#> 6: 2 --> 2 130
#> 7: 2 --> 3 1
#> 8: 2 --> 4 19
#> 9: 3 --> 1 15
#> 10: 3 --> 2 3
#> 11: 3 --> 3 128
#> 12: 3 --> 4 25
#> 13: 4 --> 1 59
#> 14: 4 --> 2 26
#> 15: 4 --> 3 28
#> 16: 4 --> 4 1007
#>