Answers: 3
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 19:00
Describe in your own words three purposes of human services.
Answers: 1
Health, 23.06.2019 09:00
Which feelings are examples of emotional needs? choose exactly 2 answers that are correct. a.love b.belonging c.joy d.anger
Answers: 2
What are the reason of forest destruction?...
Mathematics, 27.11.2019 08:31
Computers and Technology, 27.11.2019 08:31
Mathematics, 27.11.2019 08:31
Geography, 27.11.2019 08:31
Spanish, 27.11.2019 08:31
Health, 27.11.2019 08:31
Mathematics, 27.11.2019 08:31
Mathematics, 27.11.2019 08:31
Biology, 27.11.2019 08:31
English, 27.11.2019 08:31
Mathematics, 27.11.2019 08:31
Mathematics, 27.11.2019 08:31
Mathematics, 27.11.2019 08:31
Geography, 27.11.2019 08:31