The RR is a more powerful effect measure than the OR, as the OR is just an estimation of the RR, since true incidence cannot be calculated in a case control study where subjects are selected based on disease status.
32.
A case control study on a population in southern India found that more than 50 % of patients with ischaemic heart disease had serum levels of vitamin D higher than 222.5 nmol / L, but the study did not evaluate causation.
33.
In Gambia the Sl ( 2 ) / McC ( b ) phenotype appears to have been positively selected-presumably due to malaria . 80 % of Papua New Guineans have the Helgeson phenotype and case control studies suggest this phenotype has a protective effect against severe malaria.
34.
A meta analysis of the data from cohort studies found no link but meta analysis of case control studies did find a significant increase in major malformations ( however, the cohort studies were homogenous and the case control studies were heterogeneous, thus reducing the strength of the case control results ).
35.
A meta analysis of the data from cohort studies found no link but meta analysis of case control studies did find a significant increase in major malformations ( however, the cohort studies were homogenous and the case control studies were heterogeneous, thus reducing the strength of the case control results ).
36.
Data from the case control study suggest that the frequency and amount of DMAA use and risk of specific AMEs, particularly heat injuries and rhabdomyolysis, need to be examined in greater detail . . . . The Safety Review Panel recommended . . . to continue the prohibition of sales of DMAA-containing products in Exchanges and concessions.
37.
In July 2001, Kloeden CN, Ponte G and McLean AJ of the Road Accident Research Unit, Adelaide University quantified the relationship, " . . . between free travelling speed and the risk of involvement in a casualty crash in 80 km / h or greater speed limit zones in rural South Australia " using a case control study design.
38.
Nutrition blogger Denise Minger criticized the research presented in the Forks over Knives movie for using the lowest levels of scientific evidence for conclusions and decision making ( i . e . animal studies, cohort studies and case control studies rather than randomized controlled trials or systematic reviews ) and for picking and choosing only those data sets that support the views presented in the movie while disregarding others.
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