Sentence examples for measures per subject from inspiring English sources
For a fixed number of subjects, the variance of the GLS treatment effect estimator can be decreased by adding intermediate measures per subject.
In case the sample sizes and number of repeated measures are limited by budget constraints and the covariance structure includes a first-order auto-regression part, two repeated measures per subject yield highly efficient treatment effect estimators.
Association between anemia at PICU discharge and each patient characteristic at PICU admission or during PICU stay was first studied by bivariate analysis using a logistic regression with a random subject effect (general linear mixed model, GLMM) that allowed us to account for the occurrence of repeated measures per subject (no more than two admissions per subject).
The results showed that collecting a greater number of repeated measures per subject may increase precision.
A total of 787 eNO samples were collected over the study period, with an average of 14 (range, 6 16) repeated measures per subject.
The usefulness of this modeling technique is clear when our results are compared to other studies with single measures per subject.
We used a longitudinal design with several repeated measures as this is much more powerful than a simple cross-sectional design with only one measure per subject [18], [19].
We also computed the 90%-CRLBσ over all voxels in all ROIs together, to obtain a single measure per subject.
However, the validity of this analysis of the smaller cohort (n = 14) is strongly supported by our dual analysis of MAP-Tau, which was a large cohort (n = 122) with a large number of FOVs measured per subject.
Each subject may not have all n measurements and in that case we will let n i denote the number of exposure measures available per subject and use j = 1, …, n i. R codes for each method are included in Additional file 1 and are available at http://www-personal.umich.edu/~yinhsiuc/Rcode-longitudinal.html.html
Local myalgia (per subject).
