The phrase "a two step trial" is correct and usable in written English.
It can be used in contexts where a process or experiment is conducted in two distinct phases or steps.
Example: "The researchers conducted a two step trial to evaluate the effectiveness of the new drug."
Alternatives: "a two phase trial" or "a dual step trial".
During the first trial, an additional ward loses its existing weekend allied health service each calendar month creating a seven stepped trial at two sites and a six step trial at one.
The design part offers a three step process to set-up a trial.
In a next step, trials were sorted into six bins of increasing pre-TMS α-phase (spanning from 0 to 2π) or pre-TMS α-amplitude (spanning from min to max) (100 ms before TMS onset).
The application of the treatment followed two steps: initially, a trial was made on two sections of two columns, so as to calibrate the process parameters such as current density, time length and type of anode.
The protocol consisted of gradually decreasing pressure support ventilation (PSV) by 2 cmH2O, with a maximum of two steps per day (Fig. 1, PSV trial).
When a patient tolerated a PSV < 8 cmH2O for at least 2 h, the nurse reduced the positive end-expiratory pressure (PEEP) by 2 cmH2O, with a maximum of two steps per day (Fig. 1, PEEP trial).
Moving forward, based on both the design and practical problems described above, we advocate the concept of a two-step trial process, consisting of both "learning" and "confirming" trials 26 for candidate adjuvant therapies in HAND.
To eliminate the effects of acceleration and deceleration, we used 10 intermediate steps of a trial (five steps of left foot and five steps of right foot), excluding at least the first three steps and the last three steps.
The overall (considering all regions together) and regional within-trial (first right step versus second right step and first left step versus second left step) and between-trial (four steps from the first trial versus second trial versus third trial) repeatability of the WalkinSense was verified by the ICC.
Their method proceeds in two steps: (i) For each trial matching, the total correlation in the MSA is estimated using a dependency-tree based approximation.
We describe the rationale, aims and study design for the current Starting Treatment for Ethanol in Primary care Trials (STEP Trials); three parallel randomized controlled effectiveness trials being conducted in five Infectious Disease Clinics.
