0 relating to epidemiology :
In the epidemiological literature, however, insomnia tends to be defined using a variety of approaches, ranging from rigorous diagnostic algorithms, to single questionnaire items.
A more rigorous analysis of the epidemiological impact of vaccination for meningococcal disease is essential for proper health economic estimates.
The different epidemiological methods may be ranked in the oftenused hierarchy of evidence and research design.
The research targets for sound health economic evaluation are limited by a lack of epidemiological evidence and treatment options.
An epidemiological investigation was conducted to determine the source of infection and mode of transmission using a structured questionnaire.
The underlying contact patterns which give rise to the different rates of infection by age cannot be directly inferred from epidemiological data.
Cofeeding ticks : epidemiological significance for tick-borne pathogen transmission.
These issues underscore the importance of studying epidemiological samples.
