Description Usage Arguments Details Value References Examples
View source: R/non-overlap-measures.R
Calculates the percentage exceeding the median (PEM) index (Ma, 2006).
1 2 3 4 5 6 7 8 |
A_data |
vector of numeric data for A phase. Missing values are dropped. |
B_data |
vector of numeric data for B phase. Missing values are dropped. |
condition |
vector identifying the treatment condition for each observation in the series. |
outcome |
vector of outcome data for the entire series. |
baseline_phase |
character string specifying which value of
|
improvement |
character string indicating direction of improvement. Default is "increase". |
For an outcome where increase is desirable, PEM is calculated as the proportion of observations in the B phase that exceed the median observation from the A phase. For an outcome where decrease is desirable, PEM is calculated as the proportion of observations in the B phase that are less than the median observation from the A phase. Ties are counted with a weight of 0.5. The range of PEM is [0,1].
Numeric value
Ma, H.-H. (2006). An alternative method for quantitative synthesis of single-subject researches: Percentage of data points exceeding the median. Behavior Modification, 30(5), 598–617. doi:doi: 10.1177/0145445504272974
1 2 3 |
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.