Randomized trials assume comparison groups are balanced based on random assignment and large sample sizes, whereas retrospective studies frequently use statistical or logical controls to create balanced comparison groups.
A large deformation of the vessel was assumed and comparison of the expanded vessel case with a flat vessel one was made.
Boyd and Wong in their celebrated paper 'On nonlinear contractions' assumed the comparison function to be upper semicontinuous from the right.
If the C.I. was less than 0.15, we assumed the comparison is consistent [ 24].
Exon/intron boundaries for Cathepsin K, TRAP, MMP-9, and VEGF are assumed by comparison to mouse sequence.
Finally, homeologous linkage groups within each parental-specific data set and corresponding linkage groups between the two parental-specific data sets were assumed by comparison of the names of bi-parental and multiple polymorphic marker loci.
When the total number of individuals included in the network ranges from 2400 to 3000, power ranges between 0.54 and 0.70 when an equal number of trials is assumed across comparisons but drops to 0.32 when each comparison has a different number of trials.
Separate meta-analyses were performed for each pair-wise comparison of interventions: a random-effects model was fitted within each comparison, 21 with a common between-study heterogeneity variance assumed across comparisons to allow for heterogeneity even when only a single study was available.
That that will never happen to us is often just blithely assumed; the comparisons with Greece, breezily dismissed.
Coverage does not change considerably when an equal or different number of trials is assumed across comparisons (Additional file 4: Figure S4).
