Sentence examples for variance of study from inspiring English sources

Then the true effect was estimated using weighted least squares with weight of study i equal to w i  = 1/(v i  +  τ), where v i is the sampling variance of study i and τ is the variability among the true effects that is not accounted for by the model.

The logit transformed value of sensitivity was to be meta-analyzed using a random-effects model to estimate the amount of between-study variance across studies and the "exact" binomial distribution was to be used to account for the within-study variance of each study (i.e. the precision by which sensitivity has been measured).

The area of each study's circle is inversely proportional to the variance of the study's LOR and indicates the relative weight of that study (Table  2) [ 37].

We also accounted for correlation among the rate ratios based on a common reference group in each study to avoid underestimating the variance of the study specific trend, which could yield misleading results.

To synthesize the estimated coefficients vectors from the logistic regression models, we apply a GNLS method to incorporate the unequal variances of studies into meta-analysis.

We performed Analysis of Variance to study the effect of time on gene expression and identify those genes that are differentially expressed in at least one time point (treated samples) as compared to the 0 hr control (untreated sample).

The weight of an individual study was determined by the inverse of the variance of that study.

In practice, each study was weighted by the inverse of a variance composed of two terms: the variance of the study and a constant computed from Q and representing the variability of the effect size across studies [ 21, 22].

We then performed meta-analyses by using the fixed-effects model to estimate summary ORs from study-specific estimatesthat were weighted by the inverse of the variance of each study.

The heterogeneity between trials was tested with the Q statistics, computing the square distance of each study from the combined effect and weighting these values with the inverse of variance of each study (Takkouche et al, 1999).

Weighting of the studies in the meta-analyses was calculated on the basis of the inverse variance of the study.