This paper deals with problems of correlations between a parenting style, involvement of parents in school activities and academic achievements of adolescents.
Ecological studies are subject to problems of correlations between aggregated disease rates and aggregated measures of exposure which do not arise with studies which use individual data on disease, exposures and other risk factors.
As a consequence of these problems, reports of correlations between certain allelic forms of LMW-GS and quality parameters in common wheat have often been contradictory [ 7, 42- 45].
The level of human health risk these associations represent from the marine environment is unknown, and part of this problem is potentially the lack of correlation between marine exposure and the onset of symptoms several days to a week later.
To address the problem of high correlation between use of any dental care in 2005 and the outcome measures, we dropped this variable from the final regression models.
By using GEE, we accurately dealt with the problem of possible correlation between repeated observations from the same individual and thereby obtained more precise variation estimates in the regression models [ 41].
We refrain from presenting P values because of the well-known problem of phylogenetic correlation between species that requires data transformation to provide independent data points; we are unaware of statistical models that allow the analysis of traits such as LCNS that are by definition shared between species.
Third, estimating the prevalence of the preclinical and clinical stages from a model grounded in neuropathological data confronts the problem of the well-established lack of correlation between amyloid neuropathological findings and clinical manifestations [ 18, 19].
That means a moderate degree of correlation between natural resources equities and the broad stock market.
