The metaanalysis of medical data provides the highest scientific evidence. Yes or no?

From what parts does the evidence based medicine consists

A new blood test is proposed for early diagnosis of prostate cancer. Results of the new test are compared with the method that is considered the gold standard to diagnose this type of cancer. 1,000 men were tested with both methods.

Among those who had prostate cancer (according to the gold standard method), 200 tested positive in the new test and 180 tested negative. Among men who did not have prostate cancer (according to the gold standard method), 570 tested negative and 50 tested positive. Calculate the sensistivity ans specificity of a new test.

Please provide the answer in percentages with no decimal points. Enter the number without the % symbol, e.g. 10. No text is required.

The sensitivity of a new test is

The specificity of a new test is

A new diagnostic test from urine was recently adopted in the clinics to detect chlamydia. Culture of chlamidia is considered as a golden standart in chlamydiosis,The results from one of the clinics were as follows: Among those who had chlamydia, 130 tested positive and 30 tested negative. Among those who did not have chlamydia, 300 tested negative and 12 tested positive. Calculate the specificity of the new urine test.

Please provide the answer in percentages with no decimal points. Enter the number without the % symbol, e.g. 10. No text is required.

A study was made of new rapid blood test to diagnose streptococcal infection in 149 patients coming to the emergency department with sore throats.

New rapid blood test was  compared to results of throat culture as A streptococcus culture is considered as a golden standart for streptococcus infection. 37 patients had positive throat culture, and 27 of these were positive with new rapid blood test. 112 patients had negative cultures, and new rapid blood test showed positive in  35 of them as well.

Express the result as a percentage in whole numbers, without the % symbol, for example 0.25, enter 25. Do not enter any text.

What is the sensitivity of new blood test in strep throat in a study?

What is the specificity?

A group of 2,000 adults who reported low-intake of red meat and 3,500 adults who reported high intake of red meat were followed over time. After 5 years of follow up, 20 of those with low intake of red meat and 50 with high intake of red meat developed colon cancer. Calculate the relative risk of colon cancer among those with high red meat intake compared to those with low red meat intake.

Enter the result with two numbers after period

A randomized controlled trial investigated whether low-dose aspirin was beneficial in reducing the incidence of myocardial infarction. This study involved 16,000 participants and was randomly assigned to either low-dose aspirin or placebo pills. 8,000 study participants received low-dose aspirin and 8,000 received placebo pills. At the end of the study period, there were 450 cases of myocardial infarction in the low-dose aspirin group and 600 cases in the placebo group.

Calculate the relative risk of myocardial infarction if compared the both groups

Express your answer to three decimal places. No text needed.

During the cross-sectional study, two thousand individuals were examined, of which 80 were physically active, and the remaining were physically inactive. From the group of active people, 50 suffered from osteoarthritis of the knees, from the physically inactive persons, 300 suffered from osteoarthritis.

Calculate the odds ratio of developing osteoarthritis in the presence of physical INACTIVITY (exposure factor)

Write your answer to two decimal places. No text needed.

In a cohort study of 2,000 men who took long-term medications to reduce stomach acid, 100 developed stomach cancer. The comparison group consisted of 3,400 men who did not take antacids. During the follow-up period, 50 men in this group developed stomach cancer.

Calculate the relative risk of stomach cancer in men taking antacids compared to men who did not take these drugs.

Write your answer in two decimal places, eg 2.50. No text needed.

In the Cardiovascular Disease Study, which initially enrolled two thousand 40-45 year old men, 120 already had cardiovascular disease. The remaining 1,880 were followed for another 5 years, during that time 150 more men developed cardiovascular disease. Calculate the prevalence of cardiovascular disease at the start of the study.

Express the result as a percentage with two numbers after the point without the % symbol, eg 0.025, enter 2.50. Do not write any text.