Many, many studies do not replicate.
Many studies do not distinguish between service members who have seen battle and those who have not.
Many studies do find that being mentally active is associated with a lower risk of Alzheimer's disease.
Although unplanned suicide attempts assume a rapid transition for suicidal impulse to action, many studies do not quantify the time elapsed from suicidal impulse to action.
Many studies do not continue long enough to measure the full effects of tai chi, which takes time and practice to master, said Dr. Fuzhong Li, a research scientist at the Oregon Research Institute.
Second, we categorise these studies in terms of their experimental designs and show that many studies do not vary the experimental conditions to the extent required to demonstrate specific relations between tDCS and its behavioural or neurophysiological effects.
One factor, of course, could be the caffeine, but that can be hard to sort out from the research because many studies do not distinguish whether the coffee is caffeinated or decaffeinated.
Many studies do not report the basic parameters.
Unfortunately, many studies do not provide data of HbA1c.
Besides, many studies do not sample an equal number of males and females.
Although many studies do suggest a Multicyclic Generalized Weng Model, we are of the opinion that it is the residual natural gas resources that determine future production trends.
