Finally, given the complexities of data collection within the health care system, these databases are unlikely to capture all individuals in need of PC.
Our overall approach is to first generate a collection of partial trees along a hybridization network in the presence of incomplete lineage-sorting (modelled by the coalescent process), to then apply a supernetwork method to this collection of partial trees to obtain a collection of complete splits, and to then apply a filter to reduce the complexity of this collection.
The complexity of this collection is also a drawback, because the configuration and proper handling requires much effort.
However, the complexity of data collection practices, business models, vendor relationships and technological applications in many cases outstrips the individual's ability or willingness to make decisions to control the use and sharing of information through active choice' (Article 29 Data Protection Working Party 2009).
A critical distinction between human and vector surveillance is the complexity of vector collection when considering the tremendous diversity of culprit arthropods.
Other important cost determinants include method of ascertainment (such as registry vs. household enumeration), complexity of data collection, and follow-up methods (such as active vs. passive).
To accomplish this task is difficult, due partly to the many factors influencing the incidence, staging and mortality for breast cancer and partly to the complexity of data collection.
The working groups are asked to consider the time required to administer the protocol, the equipment and skills required, and the overall cost and complexity of data collection and analysis.
