Two choice targets (red/green), the locations of which were randomized from trial to trial, were presented adjacent to the motion stimulus.
We then provided training in headache management to the GPs practising in these centres, which were randomized in pairs to control (standard care) or intervention (care guided by implementation of HURT).
This was followed by self-selected and prescribed exercise sessions, which were randomized and counterbalanced to control for any order effects that may have occurred if all participants had performed the second self-selected session and prescribed exercise sessions in the same order.
Twenty two studies were included; nine of which were randomized.
Study selection criteria were all trials before August 2008 in which participants were randomized to corticosteroids or placebo and in which mortality was reported.
The study was an Internet-based randomized trial in which participants were randomized to one of three ways of framing information about the effects of antihypertensive medication on the 10-year risk of cardiovascular disease (CVD) or to no information (Figure 1 Consort flow-diagram).
The first limitation is that it was not a randomized clinical trial in which patients were randomized to continue PI or switch to alternative regimens.
Between August 2002 and January 2005, a randomized controlled trial was conducted, in which women were randomized to either abdominal or laparoscopic hysterectomy.
Eleven nondiabetic men with metabolic syndrome entered a randomized, double-blind, placebo-controlled, crossover trial, in which they were randomized to a 5-week treatment period of either fenofibrate (200 mg/day), atorvastatin (40 mg/day), or placebo.
The role of ZDV in lipoatrophy development is also supported by a study in which patients on ZDV-containing regimens replaced ZDV with either tenofovir or abacavir [15], and one in which patients were randomized to either replace ZDV by tenofovir, or to continue their existing ZDV-containing regimen [16].
