Epidemiologic studies and control programs in alcoholism. VI. Some issues in epidemiologic surveys of alcoholism.

[Methods and considerations in epidemiologic studies of alcoholism].

Methodological issues of confounding in analytical epidemiologic studies

Background: Confounding can be thought of as mixing the effect of exposure on the risk of disease with a third factor which distorts the measure of association such as risk ratio or odds ratio. This bias arises because of complex functional relationship of confounder with both exposure and disease (outcome). In this article, we provided a conceptual framework review of confounding issues in epi...

Electrophysiological studies in alcoholism.

Using a range of electrophysiological techniques, it has been possible to demonstrate impaired function in smaller calibre motor fibres and in distal large cutaneous sensory nerve fibres in both alcoholic patients without neuropathy and in those alcoholics with clinical manifestations of peripheral nerve disease. Evidence of more proximal involvement of Ia sensory fibres was obtained, but in th...

methodological issues of confounding in analytical epidemiologic studies

background: confounding can be thought of as mixing the effect of exposure on the risk of disease with a third factor which distorts the measure of association such as risk ratio or odds ratio. this bias arises because of complex functional relationship of confounder with both exposure and disease (outcome). in this article, we provided a conceptual framework review of confounding issues in epi...

Sample size estimation in epidemiologic studies

This review basically provided a conceptual framework for sample size calculation in epidemiologic studies with various designs and outcomes. The formula requirement of sample size was drawn based on statistical principles for both descriptive and comparative studies. The required sample size was estimated and presented graphically with different effect sizes and power of statistical test at 95...