Effective data collection is fundamental to epidemiological studies for several reasons: 1. Disease Surveillance: Monitoring the incidence and prevalence of diseases. 2. Outbreak Investigation: Rapid response to disease outbreaks. 3. Risk Factor Identification: Understanding the causes of diseases. 4. Evaluation of Interventions: Assessing the effectiveness of public health measures. 5. Policy Formulation: Providing evidence-based data for health policy.
