CPHQ Certification CPHQ Updated Exam

Systematic sampling is a probability sampling method where researchers select members of the population at a regular interval (or k) determined in advance12.

In this case, the healthcare quality professional is selecting every other patient admitted to the emergency room, which means the interval k is 2.

This sampling technique is simpler and more straightforward than random sampling, and can cover a wide study area13.

However, it also introduces some potential biases, such as over- or under-representation of certain patterns, depending on the order of the population13.

Therefore, systematic sampling should only be used when the population order is random or random-like, such as alphabetical or numerical12.

If the population order is cyclic or periodic, such as alternating between genders or age groups, systematic sampling may result in a non-representative sample12. References: 1: Dimensions of service quality in healthcare: a systematic review of literature 2: Systematic Sampling | A Step-by-Step Guide with Examples 4: What is systematic sampling? 3: Systematic Sampling: Advantages and Disadvantages

The study described is evaluating the efficacy of flu shots, specifically how effective they are in preventing influenza among those who received the vaccination.

Definition of Efficacy: Efficacy refers to the ability of an intervention, such as a vaccine, to produce the desired beneficial effect under ideal and controlled circumstances, typically measured in clinical trials.

Measuring Efficacy: In this context, the healthcare quality professional is examining how well the flu shots work in preventing influenza, as indicated by the number of patients who still contracted the flu despite being vaccinated.

Outcome Focus: The study’s focus on the outcome (whether patients contracted the flu) is a direct measure of the vaccine's efficacy, distinguishing it from other metrics like prevalence or process evaluation.

References: (Based on Healthcare Quality NAHQ documents and resources)

NAHQ Modules on Outcome Measurement and Evaluation.

CPHQ Study Guide, Section on Effectiveness and Efficacy in Healthcare Interventions.

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 This is because peer review in medical practice is a process by which a committee of physicians examines the work of a peer and determines whether the person under review has met the standards of the profession. The committee member should have a similar level of expertise to the person under review. Therefore, a plastic surgeon with comparable training to the hand surgeon would be the most suitable choice. They would have the necessary knowledge and experience to accurately assess the hand surgeon’s performance. Please note that this is a general answer and the specific answer may vary depending on the context and specific rules of the medical institution. Always consult with a professional or trusted source when making important decisions.