"most significant study" is a correct and usable phrase in written English.
Example sentence: The most significant study on the effects of climate change was published in 2020.
The Economic Development Corporation described the study, which it paid a Boston consulting firm nearly $1 million to conduct, as the most significant study to date on wage mandates.
Also, our most significant study results were found in a sample of obese patients with poorly controlled diabetes.
The most significant study involved immunofluorescence, which revealed focal faint linear immunoglobulin G (IgG) deposits along the alveolar septa and strong extensive peripheral linear IgG deposits in the capillary loops of the renal glomeruli.
The most significant study was that conducted by the British National Lymphoma Investigation Group, which randomized 309 patients with advanced indolent lymphoma (204 with FL) to immediate treatment with chlorambucil or to systemic therapy deferred until disease progression [ 18].
It is also line with the conclusions reached in the most significant study published to date regarding the impact of a large-scale forest fire on cardio-respiratory morbidity, namely, that the strongest association between exposure to particles smaller than 2.5 micra and hospital admissions due to asthma is to be found in the population aged 65-99 years (an increase of 10.1%) [ 8].
Such is the keen observation of Logan Levkoff, a sexologist at New York University and member of the Trojan Sexual Health Advisory Council, some of whose members were part of the research team at Indiana University that recently concluded one of the most significant studies on sexual behaviour in America.
Abstracts for all but a small number of the most significant studies were released on Wednesday, setting off a scramble by Wall Street analysts and investors to sift through the data for information that could move stocks.
This review aims to summarize the most significant studies reporting the conversion of C5 and C6 carbohydrates using different structured materials.
The most significant studies on climate change in the humid tropics have been carried out based on the analysis of superficial deposits, found clear evidence of stages of aridity in the Pleistocene period.
The most significant studies done on vervet monkeys involve their communication and alarm calls, specifically in regard to kin and group recognition and particular predator sightings.
Ultimately, the most significant studies in understanding Mn-induced parkinsonism are those in humans.
