A study suggested that a combination of high blood pressure and recreational drug use could be lethal. The study followed 8000 men aged 55 and over for two decades and found that men with high blood pressure who participated in recreational drug use even occasionally had double the risk of dying from heart disease when compare to men with normal blood pressure who abstained from recreational drug use. Is this an observational or experimental study? The study is an experiment because the researchers assign subjects to certain experimental groups and observe the outcomes. The study is an experiment because the researchers can not control what happens to the group after two decades. The study is an observational study because the researchers cannot control what happens to the groups after two decades. The study is an observational study because the researchers only observe values of the subjects and do not apply any treatments.
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The study you described is an observational study because researchers simply gathered data on the participants' blood pressure levels and recreational drug use without intervening or assigning specific treatments. They observed the outcomes in their natural settings over time, which is typical for this type of research. This means they noted correlations but did not create controlled conditions to establish cause and effect. In practical terms, understanding the risks highlighted in observational studies can help inform public health policies and personal choices. People with high blood pressure might consider avoiding recreational drugs to reduce their heart disease risk. These real-world implications underline the importance of lifestyle management for better health outcomes.
