scan: pnd – R documentation

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pnd

Percentage of non-overlapping data

Description

This function returns the percentage of non-overlapping data. Due to its error-proneness the PND should not be used, but nap or pand instead (see Parker & Vannest, 2009).

Usage

pnd(data, dvar, pvar, decreasing = FALSE, phases = c("A", "B"))

Arguments

`data`	A single-case data frame. See `scdf` to learn about this format.
`dvar`	Character string with the name of the dependent variable. Defaults to the attributes in the scdf file.
`pvar`	Character string with the name of the phase variable. Defaults to the attributes in the scdf file.
`decreasing`	If you expect data to be lower in the B phase, set `decreasing = TRUE`. Default is `decreasing = FALSE`.
`phases`	A vector of two characters or numbers indicating the two phases that should be compared. E.g., `phases = c("A","C")` or `phases = c(2,4)` for comparing the second to the fourth phase. Phases could be combined by providing a list with two elements. E.g., `phases = list(A = c(1,3), B = c(2,4))` will compare phases 1 and 3 (as A) against 2 and 4 (as B). Default is `phases = c("A","B")`.

Value

PND

Percentage of non-overlapping data.

Author(s)

Juergen Wilbert

Examples

## Calculate the PND for multiple single-case data
pnd(GruenkeWilbert2014)

scan

Single-Case Data Analyses for Single and Multiple Baseline Designs

v0.51

GPL

Authors

Juergen Wilbert [aut, cre], Timo Lueke [aut]

Initial release

2021-2-11

pnd