The phrase "a mean education level" is correct and usable in written English.
It can be used when discussing the average or typical level of education within a specific group or population.
Example: "The study revealed that the mean education level of the participants was a bachelor's degree."
Alternatives: "average education level" or "typical education level".
The sample studied was composed of 178 men and 225 women with a mean age of 46.7 years and a mean education level of 14.9 years.
Thus, the study population consisted of 60 MS patients aged 21 61 years (39.35 ± 10.56) with a mean education level of 13.8 ± 3.8 years.
Randomized participants had a mean age of 76.7 years (SD = 8.2), and a mean education level (defined as number of years after finishing primary school) of 6.5 years (SD = 3.5).
The sample for this study ranged in age from 57 to 97 years with a mean of 81.70 ± 7.25 and had a mean education level of 14.74 ± 2.54 years and included 95 women and 107 men.
Both ADT patients and controls (CTR) ranged in age from 56 to 78 years with a mean age of 65 years and education ranged from 12 to 21 years with a mean education level of 17 years.
Both groups differed from the population means in that they included a significantly higher share of women, had a significantly higher mean age, and people with a significantly higher mean education level (both p-values < 0.001).
Another limitation may be a difference in the mean education level between the bipolar depressive patients and the control group.
A second approach, developed by Verdugo and Verdugo ([1989]), uses the mean education level required across a range of occupations.
> -wrap-foot> For the cognitive reserve analysis, all the subjects were dichotomized in two groups: the Lower Education Group consisted of the subjects with an education level lower than the mean education level of the amnestic MCI sample, i.e. subjects with ≤15 years of education, and the Higher Education Group consisted of the subjects with an education level equal to or >16 years of education.
Additional analyses were carried out to determine the possible role of confounding factors, including lifetime alcohol use, smoking status, and a 2.31 year difference between groups in mean education level.
Participants' mean education level was 15.6 years after primary school and none had a history of neurological disease or treatment.
