Review the summary of a published scientific study below: Patients with multiple sclerosis frequently suffer from blurred vision. Drug X was developed to reduce blurred vision in healthy patients, but the effectiveness had not been tested on those suffering from multiple sclerosis. A study was conducted to determine if Drug X is effective at reducing blurry vision in multiple sclerosis patients. To be considered effective, a drug must reduce blurred vision by more than 30% in patients. Researchers predicted that a 20 mg dose of the drug would be effective for treating blurred vision in multiple sclerosis patients by reducing blurred vision by more than 30%. Drug X was administered to groups of multiple sclerosis patients at three doses (10 mg/day, 20 mg/day, 30 mg/day) for three weeks. A fourth group of patients was given a placebo containing no drug X for the same length of time. Vision clarity was measured for each patient before and after the three-week period using a standard vision test. The results were analyzed and graphed (See Figure 2), illustrating that more patients receiving 20 mg/day of Drug X per day exhibited a higher reduction in blurred vision than did the other groups. Researchers concluded that a 20 mg dosage of Drug X was effective for treating blurred vision in patients with multiple sclerosis. The researchers then submitted their work to a medical journal where it was reviewed by a panel of vision and multiple sclerosis experts before being published. Question 1 Were all seven steps of the scientific method referenced in the Drug X report summary in this exercise? Explain your answer by correlating each step to information provided in the report summary. Question 2 Was the reported study data in this exercise qualitative or quantitative? Explain your answer by referencing the definitions of each data type.
- Review the summary of a published scientific study below:
Patients with multiple sclerosis frequently suffer from blurred vision. Drug X was developed to reduce blurred vision in healthy patients, but the effectiveness had not been tested on those suffering from multiple sclerosis. A study was conducted to determine if Drug X is effective at reducing blurry vision in multiple sclerosis patients. To be considered effective, a drug must reduce blurred vision by more than 30% in patients. Researchers predicted that a 20 mg dose of the drug would be effective for treating blurred vision in multiple sclerosis patients by reducing blurred vision by more than 30%. Drug X was administered to groups of multiple sclerosis patients at three doses (10 mg/day, 20 mg/day, 30 mg/day) for three weeks. A fourth group of patients was given a placebo containing no drug X for the same length of time. Vision clarity was measured for each patient before and after the three-week period using a standard vision test. The results were analyzed and graphed (See Figure 2), illustrating that more patients receiving 20 mg/day of Drug X per day exhibited a higher reduction in blurred vision than did the other groups. Researchers concluded that a 20 mg dosage of Drug X was effective for treating blurred vision in patients with multiple sclerosis. The researchers then submitted their work to a medical journal where it was reviewed by a panel of vision and multiple sclerosis experts before being published.
Question 1
Question 2
A study was conducted to determine the effectiveness of Drug X in reducing blurred vision in patients with multiple sclerosis. The drug was administered to groups of patients at three different doses (10 mg/day, 20 mg/day, 30 mg/day) and to a control group of patients who were given a placebo. The results showed that patients receiving 20 mg/day of Drug X per day exhibited a higher reduction in blurred vision than the other groups. The conclusion was that a 20 mg dosage of Drug X was effective for treating blurred vision in patients with multiple sclerosis.
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