rciSC {scan} | R Documentation |
CAUTION! This function is still under development and not ready for
use! The rciSC
function computes three indices of reliable change
(Wise, 2004) and corresponding descriptive statistics.
rciSC(data, dvar, pvar, rel = 0.8, ci = 0.95, graph = FALSE, phases = c(1, 2))
data |
A single-case data frame. See |
dvar |
Character string with the name of the dependent variable. |
pvar |
Character string with the name of the phase variable. |
rel |
Reliability of the measure, used to compute the standard error.
Default is |
ci |
Width of confidence interval as a decimal. Default is |
graph |
If set |
phases |
A vector of two characters or numbers indicating the two
phases that should be compared. E.g., |
RCI |
A list of three RCI calculations (Jacobson et al., Christenden et al., Hageman et al.). |
stand.dif |
Standardized difference between mean phase A and B scores. |
conf |
A matrix containing the lower and upper confidence interval boundaries of phases A and B. |
conf.percent |
Numeric argument from function call (see
|
reliability |
Numeric argument
from function call (see |
descriptives |
A matrix containing descriptive statistics for phases A and B: n, mean, SD, SE. |
N |
Number of cases. |
A |
A vector of phase A scores. |
B |
A vector of phase B scores. |
Juergen Wilbert
Christensen, L., & Mendoza, J. L. (1986). A method of assessing change in a single subject: An alteration of the RC index. Behavior Therapy, 17, 305-308.
Hageman, W. J. J., & Arrindell, W. A. (1993). A further refinement of the reliable change (RC) index by improving the pre-post difference score: Introducing RCID. Behaviour Research and Therapy, 31, 693-700.
Jacobson, N. S., & Truax, P. (1991). Clinical Significance: A statistical approach to defining meaningful change in psychotherapy research. Journal of Consulting and Clinical Psychology, 59, 12-19.
Wise, E. A. (2004). Methods for analyzing psychotherapy outcomes: A review of clinical significance, reliable change, and recommendations for future directions. Journal of Personality Assessment, 82, 50 - 59.
## Report the RCIs of the first case from the byHeart data and include a graph rciSC(byHeart2011[1], graph = TRUE)