The phrase "a screening phase" is correct and usable in written English.
It can be used to refer to a specific stage in a process where candidates or options are evaluated or filtered.
Example: "During the hiring process, we will conduct a screening phase to identify the most qualified applicants."
Alternatives: "an evaluation stage" or "a selection phase."
Firstly, a suitable column was chosen after a screening phase.
In a screening phase, the following three factors were investigated at two levels: CS (0.5 1% w/w), PEC (0.5 1% w/w) and HA (0.3 0.5% w/w) concentrations.
The type of neutral cyclodextrin was included among other CPPs, both instrumental and related to background electrolyte composition, which were evaluated in a screening phase by an asymmetric screening matrix.
The effects of critical process parameters (capillary length, temperature, voltage, borate concentration, pH, sodium dodecyl sulphate concentration, γ-cyclodextrin concentration) on enantioresolution of ambrisentan and analysis time were extensively investigated by multivariate strategies involving a screening phase and Response Surface Methodology.
This trial, named Synfrizz, was conducted on a theranostic model of radionuclide therapy with a two-phase approach: a screening phase followed by a therapeutic phase in case patient fulfilled the defined criteria.
The experimental design consisted of a screening phase and provocation phase, as illustrated in figure 3.
Method and results: The study was of open randomized, parallel design with a preliminary screening phase, and a 6 week placebo period.
A preliminary screening phase based on a two-level fractional factorial design led to the identification of NH4NO3, glucose, Na2HPO4 and MnSO4·4H2O concentrations as the most significant variables affecting the fermentation process.
The study was designed as a randomised screening phase II trial with a one-sided alpha of 0.3 and a power of 0.80 for a comparison of OS between the randomised groups, with a possible loss-to-follow-up rate of 20%.
Patients were eligible for the study if they had symptomatic hypotensive episodes in 25% or more of their HD sessions, assessed during a prospective screening phase over 1 month.
Patients then entered a second screening phase and those who still met the inclusion criteria were accepted for final registration and were randomized at a 1 1 1 1 ratio to the four study groups.
