A cohort study was designed to assess the impact of sun exposure on skin damage in beach volleyball players. During a weekend to
urnament, players from one team wore waterproof, SPF 35 sunscreen, while players from the other team did not wear any sunscreen. At the end of the volleyball tournament players' skin from both teams was analyzed for texture, sun damage, and burns. Comparisons of skin damage were then made based on the use of sunscreen. The analysis showed a significant difference between the cohorts in terms of the skin damage. This is the exampe of:
A cohort study is a longitudinal studio (which mean a group is observed through time) where the sample is a cohort (people who share some characteristics) and they are used to identify factors that might contribute to a particular condition, illness or disease.
In this case, the sample was made of people who <u>shared a common characteristic: being volleyball players</u>. This study was used to identify how <u>the use of sunscreen would affect the skin in terms of damage.</u>
<u />
Therefore, we can say that this is an example of cohort study.
The researchers indeed had found around 4,500 languages in the world. In the smaller part of the world, the language may even differ in a same region and culture if it's spoken by different families
