Biostats test 1 - Study guides, Class notes & Summaries

Biostats test 1

Biostats test 1

COMLEX Level 2 Biostats + Ethics Questions and Answers 100% Pass ___ bias is defined as factors unrelated to the aim of the study distinguish the subjects from the rest of the population so that results are not generalizable. Sampling ___ bias is information gathered at an inappropriate time in a way that distorts the conclusions late-look ___ bias is knowledge of the presence of the disorder alters recall in subjects. recall ___ bias is when certain factors affect the final enrol...

COMLEX Level 2 Biostats + Ethics Exam Questions With Verified Answers. Bias introduced into a study when a clinician is aware of the patient's treatment type. - answerObservational bias Bias introduced when screening detects a diseae earlier and thus lengthens the time from diagnosis to death. - answerLead-time bias If you want to know if geographical location affects infant mortality rate but most variation in infant mortality is predicted by socioeconomic status, then socioeconomic sta...

Biostats Questions and Answers | Latest Update | 2024/2025 | Already Passed 16 rat twins put in Group 1 and Group2; measure and compare wt of cortex paired t test A 95% CI for p is (14%, 22%). What is the margin of error? 4% A 95% CI for p is (14%, 22%). What is the point estimate? 18% A 95% CI for the difference in means is (0.44, 2.96). Is the difference is statistically significant? Yes - significant difference A two sided test for the equality of means produces p=0.20. Rejec...

KPER 1200 TEST 1 fully solved 2023what is selective pressure? - correct answer environmental factor affecting the reproduction of a species. what is environmental mismatch? - correct answer meaning the selective pressure that we once had are no longer there (environment favoured people more fit but now that environment doesn't exist) What is public health? - correct answer What society does collectively to assure the conditions for groups of people to be healthy and prevent diseases wh...

Epidemiology Questions Answered 100% correct Public Health the science and art of preventing disease, prolonging life and promoting health through organized efforts in society Model for public health -definition of the problem -magnitude of the problem -identification & understanding determinants -develop medical or behavioral interventions/ prevention strategies (recommendation) -set policy or public health priorities -implement and evaluate Surveillance tracking of a dis...

Step 1 Biostats and ethics Controlling confounders - ANSWER-There are 3 methods to control confounders in the design stage of a study ; matching, restriction and randomization. Restriction is a method that limits participation in the study to individuals who are similar in relation to the confounder. For example, a study restricted to non-smokers only will eliminate any confounding effect of smoking. However, a disadvantage of restriction is that it may be difficult to generalize to the re...

Biostats Exam 2 HW Questions & Answers, rated A+ If you fold a normal curve, each half would fit perfectly on top of the other. This characteristic is known as _______________. - symmetry In order to say that a distribution is positively skewed, which of the following must be true? (choose one or more) - Right tail must be longer than the left Which of the following is a measure of how asymmetric your data is? - Skewness What is the term associated with how flat or peaked a distributio...