Wadsworth ME, Butterworth SL, Hardy RJ, Kuh DJ, Richards M, Lan- genberg C, Hilder WS, Connor M: The life course prospective design: an example of benefits and problems associated with study longevity. Soc Sci Med 2003, 57:2193-2205....
What is the key feature of a cross-sectional study? Present the strengths and weaknesses of this approach. What is the term for the study of factors connected with the improvement of human race? Discuss the double-blind research design; what it is, why it is used, and give an example....
All too often in the post-Vietnam past—the first Gulf War, for example—the default position of the Democratic Party has been to assume that anyprospectiveuse of U.S. military power would be immoral.— Joe Klein,Time,21 Aug. 2006 ...
For example, they cause 90% of hip fractures and the current cost of hip fractures in the U... ND Carter,P Kannus,KM Khan - 《Sports Medicine》 被引量: 972发表: 2001年 Executive Function and Falls in Older Adults: New Findings from a Five-Year Prospective Study Link Fall Risk to ...
Retrospective cohort study A major problem with a prospective cohort study design is that the study population often must be followed up for a period to determine whether the outcome of interest has developed. For example, in the study of the relationship between serum 25(OH)D concentration and...
48 For example, we expected to see an association between parent-to-child physical aggression49 and subsequent violent behavior, but this was the case only at baseline. Finally, although the propensity score analysis allowed us to account for many potential confounders, there is a possibility that...
According to the ETS website,the timing of a section may varywith longer reading or listening portions containing some additional questions. For example, students may have an elongated reading section that lasts 54 to 72 minutes with 30 to 40 questions plus a listening section of normal length,...
This example shows that PST21 tried to help students recognize their errors/misconceptions by asking questions related to their solution and aimed to reveal the reasons for their mistakes in the study’s first year. However, in the second year, she asked the question using easier numbers to hel...
any of which may override the impact of movement behaviours within the context of COVID-19. For example, students are currently experiencing a period of extreme uncertainty with altered living arrangements (Cao et al., 2020), university campus closures (Sahu, 2020), fear of infection and transm...
An example of a retrospective cohort study is provided by a study of 20,245 agricultural pesticide applicators in Sweden (Wiklundet al., 1989). It also evaluated the association between pesticide exposures and disease. The cohort, consisting of all applicators who had been licensed between 1965...