Before revision: However, most randomized controlled trials (RCTs) to date have leaned toward the explanatory side of the pragmatic-explanatory spectrum because of the value traditionally placed on proving causation by deconfounding as part of proving efficacy .
After revision: , largely, but sometimes also because "attempts to minimize cost and maximize efficiency have led to smaller sample sizes"However, most randomized controlled trials (RCTs) to date have leaned toward the explanatory side of the pragmatic-explanatory spectrum because of the value traditionally placed on proving causation by deconfounding as part of proving efficacy .