The phrase "a sufficient duration for" is correct and usable in written English.
It can be used when discussing the amount of time needed for a specific purpose or activity.
Example: "The project requires a sufficient duration for completion to ensure quality results."
Alternatives: "an adequate amount of time for" or "a suitable length of time for".
Efficacy was directly compared in a head-to-head study for 3 months of treatment, which is considered a sufficient duration of treatment for such comparisons [ 23, 24].
This study is the first to describe specific shoulder disorders detected on US in general practice patients who are symptomatic enough and have had symptoms for a sufficient duration of time to warrant referral by their GP for US.
Further study requires that investigators apply standardized definitions of MRI abnormalities in sufficiently large numbers of well-characterized patients followed for a sufficient duration of time.
The goal of general pharmacokinetic investigation in drug discovery is to identify a drug candidate with properties that allow delivery and exposure to the target molecule for a sufficient duration of time so as to confer the desired pharmacologic activity.
The experimental results reveal that it can well detect abnormal events such as burglary and fighting as long as they last for a sufficient duration of time.
This dynamics must be run for a sufficient duration of time to guarantee that all transients in the MCMC have died down and the desired equilibrium state has indeed been reached.
Because of the lack of a sufficient duration of the available period, detailed discussions are left for further investigations.
Consequently, successful professional development needs to be of a sufficient duration, allowing for multiple cycles of presentation to provide participants with several opportunities to assimilate new knowledge and practices (Brown 2004) and to engage multiple cycles of feedback and reflection (Penuel et al. 2007).
Adverse effects are only observable when the concentration (exposure) of a substance exceeds the threshold for effects for a sufficient duration.
