Experts’ mean complexity ratings by intervention.
Note: N = 3 experts independently rated each intervention (possible scores = 10 – 30). Experts’ ratings were averaged to produce the total scores shown here. Planned contrasts indicated PRT was rated significantly more complex than DTT and VS, t(3.2) = 6.43, p = 0.006.
* For PRT, the standard error of the mean was zero resulting in upper and lower 95% confidence bounds equal to the mean.