We welcome requests from all researchers to access ALSPAC data and samples, whatever your research area, institution, location or funding source. We can also help you collect new data and samples ...
A list is available here. Participants have donated a range of samples, including blood, urine, hair, nails, saliva and teeth. Data derived from biological samples A large amount of information has ...
The method is commonly used in statistics, a branch of applied mathematics, to obtain a sample that is representative of the larger population. The simple random sampling method allows researchers ...