The phrase "a third of study" is not correct in standard written English.
It may be intended to refer to a portion of a study or research, but it lacks clarity and proper context.
Example: "In the research, a third of the study participants reported feeling more engaged after the intervention."
Alternatives: "one-third of the research" or "a third of the research".
Though this proportion was significantly less than for subjective refraction and automated refraction without cycloplegia, less than a third of study participants had habitual vision at this level.
While more than a third of study participants engaged in regular exercise, this form of activity contributed only about 10% to daily non-occupational energy expenditure.
A third of study women (n = 137) believed that the implant might freely move in the body other than the site of insertion and cause severe pain.
In total, more than a third of study participants (n = 18, 36%) were concerned with outpatient services and/or long-term psychotherapy (Table 1).
More than a third of study participants sought medical advice first at dispensaries 36.7% (232/633), followed by district hospitals 27.5% (174/633) then health centres 13.6% (86/633) and private facilities 13.4% (85/633).
About a third of studies that compared technology-assisted education with traditional teaching methods found no difference in student performance.
Less than a third of studies on cyclosporine reported the standard criteria needed to determine bioequivalence.
We identified conceptual overlap in a third of studies and only half of studies had uni-dimensional attributes.
Only a third of studies included in this paper used an RCT or other robust study design, and many of these had a high risk of bias.
Moreover, only a third of studies were from medical/epidemiological/healthcare journals and with no distinction between studies of patients or of staff and subgroup analyses were absent.
Furthermore, not all studies used the same algorithm to calculate index-based scores with a third of studies also failing to report which scoring system was used.
