She has conducted in-depth research on social and economic ... However, it may save costs on obtaining a sample. Cluster sampling is a two-step sampling procedure. It may be used when completing ...

Opt-in sample 1 comes from a panel aggregator ... The same weighting scheme was applied to all six samples following Pew Research Center’s standard procedure for weighting the ATP. Complete details of ...

The collection of post-mortem brain tissue has been a core function of the Alzheimer Disease Research Center’s (ADRCs ... collecting data on brain region sampling, including anatomic landmarks used, ...

Thin sections must also be returned along with any residual material from the sample. Provide all data or analytical ... Acknowledge that samples were provided by the “Michigan Repository for Research ...