Answers: 2
Health, 22.06.2019 15:20
[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine.what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.
Answers: 2
Health, 22.06.2019 20:30
The only part of the body that should touch the ball when setting in volleyball
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Health, 23.06.2019 07:00
Where does peer pressure come from? a.the power of culture b.the influences of others c.people who purposely try harm you d.the messages in tv commercials
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Health, 23.06.2019 21:10
Which of these increases the risk. of developing cardiovascular disease
Answers: 1
Exercise has no effect on breathing true or false...
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