Cross-sectional studies

Cross-sectional studies are epidemiological design which can be considered as descriptive or analytical designs depending on the general objective. This is a quickly and economical allows to calculate prevalence of condition. Also, relationship temporality between exposition outcome being measured simultaneously unique period, not possible identify directionality in temporality. When there an analytic objective, association measure used Prevalence Ratio (PR), specially when more equal 10% Odds (OR) that lower. To quantify this different regression models like Binomial log Poisson used, including generalized lineal models. If OR, most common model multiple logistic regression.