Can you please explain to me how they got these answers? The steps that were taken to get these answers.

3. A medical researcher is interested in the possible role of a particular vaccine in causing autism. She identifies 50 autistic children and matches them with 50 similar age children from the same neighborhoods who were not autistic. She then determines which of the children had been given the vaccine. These are the results: Group Vaccine Autistic Normal Total Yes 21 15 36 No 29 35 64 Total 50 50 100 a. What type of study design was used in this research? Case control study b. Calculate and interpret the relative risk and odds ratio of autism for vaccine recipients v. non-recipients. Autism Norma' V . v as N m 64 50 50 100 Risk of Autism ifVaccine 0.58 Risk of Autism if No Vaccine 0.45 Relative risk of Autism V/NV 1.29 Odds of Autism if Vaccine 1.40 Odds of Autism if No Vaccine 0.83 Odds ratio of Autism V/NV 1.69