For each included study, we extracted the following information: Full reference, the number of study participants, type of intervention, type of control intervention, the setting and outcomes.
Given a ratio of intervention to control of 2 1, alpha = 0.05, power = 80% yields a sample size of 103 in the control and 206 in the intervention groups.
Without a supervised intervention, subjects of control group may decrease the time or intensity of home walking program.
The objective of the study was to evaluate the effectiveness of a combination of surgical interventions for control of postpartum hemorrhage.
Because a RCT is performed to address uncertainty about comparator interventions, the choice of control intervention should adequately reflect, to the extent possible, "current standard medical practice".
We decided on a 3 1 ratio of intervention to control patients during the intervention period.
The interventions studied were: Intervention 1 "reinforcement of control measures and cleaning procedures" (October 2006) and Intervention 2 "extensive decontamination" (August 2007).
We aim to recruit equal numbers of patients receiving the intervention and of controls from the same psychiatrist.
Underground information transmission is an important way of well trajectory remote control and manual intervention of trajectory automatic control.
(On Thursday, he told the Associated Press the "intervention" spiraled out of control and she felt helpless to stop it).
