When given covariates, entropy balancing implements an algorithm that generates weights that balance sample moments (i.e., means, standard deviations) between treatment and control groups [96].
However, it is important to balance sample size with other experimental goals so as not to waste resources.
To balance sample sizes across our populations, 30 Malay individuals were randomly sampled from SGVP data set (which contains 89 individuals).
However, normalisation to some internal control is essential for accurate QPCR to balance sample-to-sample variations within the RT and PCR reactions.
If we had more data points per individual, we reduced them to a random sample of 50 points, to balance sample size among individuals.
As earlier, the model also incorporated the two random factors to account for variations between species and lineages and used weights to balance sample size differences.
Third, we hoped this grouping strategy might balance sample size constraints with a clear demarcation between pre-menopausal (the younger) and post-menopausal (the older) age groups.
Sample selection was enriched for severe transplant outcomes to balance sample groups, that is, 'severe' aGVHD (grades III + IV; n = 9), 'mild' aGVHD (grades I + II; n = 37), and no aGVHD (grade 0; n = 39).
In order to overcome the effect of prevalence on kappa value, some researchers advocate using a balance sample and avoiding kappa to assess validity of conditions with low or very high prevalence [ 3, 4, 9, 23].
Since balanced samples are not strictly random they were not employed with the design-based estimators.
