The research hypothesis is that aromatherapy reduces stress more effectively than does acupuncture. The researcher does not identify a control group. This study would be a(n) design.

Correct Answer: A

Rationale: The correct answer is A: experimental design. In an experimental design, the researcher manipulates one variable (aromatherapy vs. acupuncture) to observe its effect on another variable (stress). Without a control group, it is impossible to establish a baseline for comparison. A control group is essential to isolate the effects of the treatment from other variables. Quasi-experimental designs lack random assignment, surveys are used to gather data rather than test hypotheses, and meta-analyses involve combining and analyzing results from multiple studies.

Correct Answer: A

Rationale: The correct answer is A: Qualitative, Ethnography. Ethnography involves studying a culture through direct observation and interaction, which aligns with the nurse's approach of observing the tribe's rituals firsthand. This type of research focuses on understanding cultural practices and behaviors in their natural context, making it suitable for studying the tribe's rituals. Choice B: Qualitative, Phenomenology focuses on exploring individuals' lived experiences and perceptions, not cultural practices like rituals. Choice C: Quantitative, Quasi-experimental involves manipulating variables in controlled settings, not ethnographic observation. Choice D: Quantitative, Secondary data analysis involves analyzing existing numerical data, not direct observation of cultural rituals.

Correct Answer: B

Rationale: The correct answer is B: length of hospital stay. DRGs aim to reduce healthcare costs by incentivizing hospitals to provide efficient care and discharge patients sooner. Shortening the length of hospital stay helps decrease overall healthcare expenses without compromising the quality of care. Choices A, C, and D are incorrect because DRGs focus on the duration of hospitalization, not necessarily on hospital admission rates, outpatient services, or specialty groups. Shortening hospital stays is a more direct way to control costs within the inpatient setting.

Correct Answer: D

Rationale: The correct answer is D: capitated. In a capitated payment system, the physician receives a fixed amount per patient regardless of the services provided. This incentivizes cost-effective care and promotes preventive measures. In this scenario, the physician is receiving revenue for each procedure billed, which is not characteristic of capitated payment. A: Prospective payment is when a fixed amount is determined in advance for specific services rendered. This is not the case in the scenario provided. B: Retrospective payment involves reimbursement after the services are provided, which is not reflected in the scenario given. C: Diagnosis-related group (DRG) is a payment system used in hospitals based on the diagnosis and procedures performed, not applicable to individual physician billing as presented in the question.

Correct Answer: A

Rationale: The correct answer is A because in a universal health care system, one universal payer (often the government) is responsible for covering all health care expenses for all citizens. This means that everyone, regardless of income or eligibility, is covered under the same system. Choice B is incorrect because a single-payer system does not necessarily limit health care access based on income; it simply means there is one entity responsible for paying health care costs. Choice C is incorrect because single-payer systems do not rely on insurance companies to pay fees; instead, the single payer itself covers the costs directly. Choice D is incorrect because it does not specify that the one payer in a universal health care system is usually the government, which is a key distinction in this context.