Its from the same article.
1)partway through the study, the researchers switched from providing the dietary supplements in one large dose per day to two smaller doses per day. why did they make this decision?
a)results of another study showed that high doses of folic acid may be linked to increased risk of colorectal cancer.
b)the authors’ preliminary results showed that high doses of folic acid may be linked to increased risk of colorectal cancer.
c)the subjects complained that once-daily doses were too large to swallow.
d)the researchers found that absorption of once-daily doses was not as efficient as twice-daily doses.
2) the primary endpoint of the study was a change in
a)serum folate and vitamin b-12.
b)serum homocysteine.
c)physical activity.
d)cognitive function.
3)the study design is best described as a
a)retrospective cohort study.
b)case-control study.
c)randomized, controlled trial.
d)prospective cohort study.

Hi, i would like you to comment on this comment or ask me about that task? *do you think that the subjective aspects as well as the opinions and attitudes of people can be measured scientifically and objectively? how do the three measurement scales we met in this module contribute to this topic?   yes. to science, we have at our disposal several methods to measure and analyze all kinds of natural and social phenomena (such as the opinions and attitudes of people) objectively.   the three scales of measurement provide interesting data to measure the opinions of people about an object, event or person. they are used for different situations depending on our object of study. the thurstone scale is used to measure the attitude of people through an opinion on a subject in question (usually religious or political), since it comprises a range of possibilities, thus being able to assess in detail and according to a punctuated list, the opinion of the respondent. the likert scale, however, allows to measure the degree of acceptance or rejection of people in a situation presented, being able to strongly agree, or in complete disagreement. finally, the bogardus social distance scale allows us to measure the attitudes of a group of people towards another social group. its main purpose was to measure racial and national prejudices.

Exercise has no positive effects on the nervous system? true or falseu

Christopher came down with chicken pox after spending time in his child’s day care. the chicken pox represents what link in the chain of transmission in this scenario?