Potential of insect growth regulators as termiticides: a review.

Abstract

There are a large number of studies of the prevalence of migraine with wide variability in the figures obtained (1-2 at 35%). These variations depend on the population studied, age and sex sampled, diagnostic criteria used and the method employed in the survey. After validation of the questionnaire for diagnosis of migraine, this should be used in homogeneous populations before use in broad population studies. Our findings support the use of a suitably validated questionnaire as a useful method for the diagnosis of migraine in epidemiological studies.