Before new interventions can be used in disease control programmes, it is essential that they are carefully evaluated in “field trials”, which may be complex and expensive undertakings. Descriptions of the detailed procedures and methods used in trials that have been conducted in the past have generally not been published.
Descriptions of the detailed procedures and methods used in trials that have been conducted in the past have generally not been published. As a consequence, those planning such trials have few guidelines available and little access to previously accumulated knowledge.
For new drugs or vaccines, the evidence from one or more Phase III trials, taken together with the results of the Phase I and II trials, will be presented to licensing authorities to register the product for clinical or public health use. However, the total number of participants included in Phase I to III trials of a new product will often be no more than a few thousand, and there are usual…
Before new interventions can be used in disease control programmes, it is essential that they are carefully evaluated in “field trials”, which may be complex and expensive undertakings. Descriptions of the detailed procedures and methods used in trials that have been conducted in the past have generally not been published.
Before new interventions can be used in disease control programmes, it is essential that they are carefully evaluated in “field trialsâ€, which may be complex and expensive undertakings. Descriptions of the detailed procedures and methods used in trials that have been conducted in the past have generally not been published. As a consequence, those planning such trials have few guidel…