1. In this study design, participants are randomized into two different groups, such as control group and experimental group. After a period of time, both groups go through a "wash-out period," after which the groups switch. The control group now receives the experimental treatment, and the former experimental treatment group now acts as the control.

Group of answer choices

a. Crossover Trial

b. Case-Control Study

c. Randomized Controlled Trial

The following data were collected in a study relating hypertensive status measured at baseline to incident stroke over 5 yea rs. Compute the RELATIVE RISK of stroke in patients with hypertension as compared to patients free of hypertension. Free of Stroke at 5 Yea rs Stroke Baseline: Not Hypertensive 952 32 Baseline: Hypertensive 220 18 A (18/220)/(32/952) A (32/984l/(18/238) IAI (18/238)/(32I984) A study is run to estimate the incidence of stroke in men and women over the age of 60. Development of stroke was monitored over a 10 year follow-up period. The data are summarized below. Compute the ODDS RATIO of stroke incidence comparing MEN to women. NOTE: M EN are rst in the question so they form the NUMERATOR of the answer. Developed Stroke Did not Develop Stroke Men 120 6500 Women 90 7000 7:\" 0013/0018 7:\" (86/7074l/(120/6453) 7:\" 0018/0013