A study conducted in 40 US clinical centers beginning in 1993. Enrolled were 10,739 postmenopausal women, aged 50-79 years, with
prior hysterectomy, including 23% of minority race/ethnicity. Women were randomly assigned to receive either 0.625 mg/d of conjugated equine estrogen (CEE) or placebo.
What is the study design?
a) Cross-sectional
b) Cohort
c) Randomized clinical trial
d) Ecological
Explanation:Randomied clinical trial is a study used in scientific experiments in which the participants are divided randomly into group that compare different treatments or interventions.
Here participants are chosen by chance to receive clinical interventions.
With Personal Watercraft having no brakes, the best thing to
do in avoiding obstacles is to take caution and slow down while operating the
Personal Watercraft boat but when obstacles are ahead and you need to use
methods, it is best to apply throttle and after that, steer quickly.
