which of the following groups has the lowest life expectancy? course hero

When was the Baltimore longitudinal study of aging started?

The Baltimore Longitudinal Study of Aging (BLSA) is a research study of normative aging started in the 1950s. Volunteers, free of chronic conditions, are recruited and followed every 4, 2, or 1 year (s) until their death.

What is primary prevention?

Primary prevention is a behavior to prevent the disease or eliminating risk factors when the disease is not occurred. "Taking low-dose computed tomography scan to detect the early stage of lung cancer" and "Quitting smoking after diagnosis of chronic obstructive pulmonary disease" are not correct.

What is the ecological fallacy?

Ecologic fallacy is making individual-level conclusions from ecologic studies, which collect group-level data. A group of physicians working in the same hospital noticed a rare presentation of male young patients, free of typical risks factors, who presented to the hospital with rapidly progressing acute kidney failure.

What is a case control study?

They conduct a case-control study and interview patients with cholera infection (cases) and persons without cholera infection (controls). A patient who was diagnosed with cholera often tries to identify all kinds of information related to drinking water.

What is efficiency in health?

Efficiency evaluates if effective treatments can achieve a less expensive and better way to work. The cost-benefit ratio is assessed where cost includes money, discomfort, pain, absenteeism, disability, and social stigma. In general terms, a health indicator is a.

What is the purpose of randomization?

The main purpose of randomization is to prevent the potential bias on the part of the investigators from assigning participants into the groups of the trial. In a clinical trial, sometimes patients agree to receive an intervention but later decide to stop taking the medication.