On the Methodology of Comparative Epidemiology
Successful comparative epidemiology requires a good knowledge and understanding of etiology, the ecology of host and pathogen and the epidemics of the pathosystems under study. Comparative studies on hypotheses begin with a clearly formulated objective and the choice of essential and meaningful criteria. The methods to be used are the ones accepted and appropriate in epidemiological research as described, for instance, in Kranz and Rotem (1988) and Francl and Neher (1997) and in more general terms by Zadoks (1978). The importance of a proper terminology (Sect. 3.1) for comparative epidemiology was stressed by Butt and Royle (1980).
KeywordsSugar Maize Europe Covariance Rubber
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