FCA1-0836
The phenomenon that the patients behaved in a different manner when they know that they are being observed is termed as?
Archives: FRCA Part 1
FCA1-0847
An experiment is designed to investigate that how three diets having different sugar content affect the body weight to a different level. Which one of the following test will determine a statistically significant difference among the diets?
FCA1-0845
A breakthrough lipid-lowering therapy for stroke had a number needed to treat (NNT) of 20 for the prevention of the primary end-point. These results can be best described as:
FCA1-0839
A study aimed at assessing a novel proton pump inhibitor (PPI) in aged patients taking aspirin. The new PPI is prescribed to 120 patients and the already prevalent PPI is given to the 240 members of the control group. In the next 5 years, the instances of upper GI bleed reported in the experimental and control group were 24 and 60 respectively. What is the value of absolute risk reduction?
FCA1-0843
You are asked about the relative risk associated with a drug. You happened to have read a report in which the same drug was compared with a placebo and your initial thoughts after reading the study were that the drug will have significant side effects. What do you expect the value of relative risk to be?
FCA1-0838
You performed pelvic ultrasound of Mrs Aciman as she had pelvic bloating and intermittent pain. The ultrasound shows a complex ovarian cyst and the radiologist who reported the results has advised urgent consultation with a gynaecologist. Upon breaking the news to Mrs Aciman you learn that she recently had a blood test done that was normal. You explain it to her that the test performed (Ca-125) is not always perfect and is only able to detect 80% of the cancer cases while the remaining 20% go undetected. Which statistical term appropriately explains the 80% in this example.
FCA1-0842
In a study lasting over a period of two years, in which the mean age of 800 patients was 82 years, the efficacy of hip protectors in reducing femoral neck fractures was discussed. Both experimental and control group had 400 members. Instances of fractures reported over the two year time duration were 10 for the control group (that were prescribed hip protector) and 20 for the control group. What is the value of Absolute Risk Reduction?
FCA1-0846
In the United Kingdom, a new breast cancer screening test is being conducted compared to the conventional use of mammography. This test predicts that if the breast cancer is diagnosed at an earlier stage, it could improve the survival rate but the overall results remains constant. This is an example of what kind of bias?
FCA1-0837
Provided below is an abstract of a study conducted recently. A consensus was developed among international experts. A total of 27 experts were invited. 91% of them decided to show up. A systematic review was performed. This comprised of open ended questions and the participants were encouraged to provide suggestions by e-mail. In the second phase google forms were used. Participants were asked to rate survey items on a scale of 5 points. Items that were rated critical by no less than 80% of the experts were included. Items that were rendered important by 65-79% of experts were inducted in the next survey for re rating. Items that were rated below 65% were rejected. Which of the following methods was used in the study from which the abstract has been taken?
FCA1-0841
What is the percentage of values that lie within 3 standard deviations of the mean?