The phrase "ascertains the need" is correct and usable in written English.
It can be used in contexts where one is determining or identifying a requirement or necessity.
Example: "The committee ascertains the need for additional resources before making a decision."
Alternatives: "determines the necessity" or "identifies the requirement."
This study was undertaken to evaluate the attitude of anesthesiologists and gynecologists to the use of blood during cesarean section operation and, on the basis of the results, to ascertain the need for improvement of current transfusion guidelines.
Previous analyses (not shown) were performed to ascertain the need for separate models for each sex.
The range of responses was examined to ascertain the need for the full range of response options and the 'not applicable' options.
Baseline evaluation will also increase the likelihood of determining the correct diagnosis and appropriate treatment, and to ascertain the need for referral.
Our foremost motivations to perform this study was to elucidate whether childhood NHL in Uganda is underdiagnosed or overdiagnosed using current diagnostic practices and to ascertain the need to introduce more advanced diagnostic methods in the country.
Many library supporters are urging caution, asking whether the town is moving too quickly on those projects before ascertaining the needs of the library and exploring other options.
ELAINE HARRIS: Presumably Melinda is visiting Bangladesh to ascertain the needs specifically related to women and children and ultimately providing assistance.
We use a case study approach to ascertain the needs, wants, and current realities of selected forest communities in Brazil and Mexico, to inform bottom-up approaches to community interventions.
The study concluded higher prevalence of BTV in sheep than the goats, the risk factors were significantly associated with the occurrence of disease, and together ascertaining the needs to design appropriate disease management and control strategies in sheep and goats.
The data collected at the commencement of the position included focus groups to ascertain the needs of emergency department nurses and a questionnaire designed to measure the skills, confidence and perceived knowledge of emergency department nursing and medical staff.
