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overlap

Overlap indices for single-case data

Description

The overlap function provides the most common overlap indices for single-case data and some additional statistics.

Usage

overlap(data, dvar, pvar, mvar, decreasing = FALSE, phases = c(1, 2))

overlapSC(...)

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.
mvar

Character string with the name of the measurement time 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").
...

Further arguments passed to the function.

Value

overlap

A data frame consisting of the following indices for each single-case for all cases: PND, PEM, PET, NAP, PAND, Tau-U (A vs. B - Trend A), Diff_mean, Diff_trend, SMD.
phases.A

Selection for A phase.
phases.B

Selection for B phase.
design

Phase design.

Author(s)

Juergen Wilbert

See Also

Other overlap functions: corrected_tau(), nap(), pand(), pem(), pet(), pnd(), tau_u()

Examples

## Display overlap indices for one single-case
overlap(Huitema2000, decreasing = TRUE)

## Display overlap indices for six single-cases
overlap(GruenkeWilbert2014)

## Combining phases for analyszing designs with more than two phases   
overlap(exampleA1B1A2B2, phases = list(c("A1","A2"), c("B1","B2")))
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

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