The phrase "a third of studies" is correct and usable in written English.
It can be used when referring to a specific portion or percentage of studies in a particular context, such as research findings or academic literature.
Example: "A third of studies conducted on this topic indicate a significant correlation between the variables."
Alternatives: "one-third of research" or "33% of studies".
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.
The distribution of principal confounders, such as synchronous or metachronous metastases and curative intent of surgery were not reported by almost a third of studies.
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.
For example, a third of studies included in our review were conducted by authors at institutions in solely developed countries (n = 11).
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.
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.
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).
