Because a heritability estimate is a population-specific snapshot, and most heritability estimates were based on samples of convenience [ 36], there emerged a need for representative epidemiological twin samples.
Selection of sites in these CEM programmes was predominantly influenced by a need for representative geographic distribution, although malaria prevalence and willingness of HCPs to participate were also seen as important factors.
Therefore, there is a need for more representative surveys [ 4, 22, 23].
Further, there is a need for additional geographically representative field data on bottom vegetation to provide good coverage of a variety of different environments.
The Medical Monitoring Project (MMP) arose out of a need for a nationally representative, population-based surveillance system to assess behaviors, clinical outcomes, and the quality of care for persons with HIV infection who are receiving care.
The available evidence from Pakistani population is limited and there is a need for a nationally representative survey to assess the knowledge and attitudes regarding dengue and any misconception in the general population.
In addition, there is a need for animal studies representative of other human stressors, such as life events.
This is a local rather than a national survey, and there is a need for a nationally representative mental health epidemiological survey in Kenya.
There is a need for longitudinal nationally representative studies to better understand the epidemiology of this new epidemic particularly in terms of the maintenance of waterpipe smoking after teen age and the role of waterpipe as a gateway for future cigarette smoking and assist public health agencies in developing and applying control policies and strategies.
Mr. Annan told Mr. Shah there was no longer a need for a high-level representative for Iraq, where the United Nations has no arms inspectors and is largely limited to aiding the "oil for food" program.
