What is Lot Quality Assurance Sampling (LQAS)? Describe the History of LQAS. Why It is Used in Public Health? Describe the Methodology of LQAS.
About LQAS: LQAS stands for "Lot Quality Assurance Sampling." It is a statistical method used in quality control and monitoring, particularly in the field of public health. LQAS is often employed to assess the quality of products or services in a population or to make decisions about whether a specific process meets predetermined standards. Key features of LQAS include: Sampling Technique: LQAS uses a systematic sampling method to collect data from different lots or clusters within a population. The lots could represent geographic areas, groups of individuals, or batches of products. Decision-Making Framework: The collected data are typically used to make binary decisions, such as accepting or rejecting a lot based on predetermined quality criteria. This makes LQAS particularly useful for quick, cost-effective decisions. Risk-based Sampling: LQAS employs a risk-based approach, focusing on areas or lots with a higher likelihood of quality issues. This targeted sampling allo