In addition, their sample showed an interaction between age and HIV, in that patients that are HIV-positive are more likely to have a comorbid illness as they get older compared to their HIV-negative counterparts.
We tested this hypothesis in the full sample with an interaction term for HDLC × rs73885319 × age, with age represented as a binary variable contrasting those ≥55 years with those <55 years.
In models that included the full study sample and an interaction for place of residence and health worker visit, the results were the same as those discussed based on the stratified models (not shown).
Expression of integrin β1 was significantly correlated with that of ERK in glioma clinical samples, reflecting an interaction between the two signaling pathways.
By contrast, only 12% of the cases of reduced significance in the non-AMI samples showed an interaction effect, each with only a mild increase of AMI status on the genotypic effect.
The PSC8 samples infected with P. halstedii race 710 (a compatible interaction) generated 251,126 reads (with an average length of 176 bp and a median length of 161 bp), while the infected XRQ samples (an incompatible interaction) generated 161,526 reads (with an average length of 184 bp and a median length of 179 bp).
When we applied cryo-FISH to a region that scored double negative in the 4C analysis for the untreated and α-amanitin treated samples we found an interaction frequency of ∼4% between these loci, which is similar to the background interaction that was found previously [15].
Chi et al. (2009) analyzed miRNA:mRNA interactions in Mus musculus neocortex tissue samples and published an interaction map containing a set of verified target sites in the transcriptome of the murine brain.
Indeed, a likelihood ratio test to assess sample pass rate for low volume samples indicated that sample pass rate for low volume samples was significantly different between studies (P = 0.002) suggesting there is an interaction between sample volume and study with respect to sample pass rate.
First, as in the quota sampling approach, the sample size needed to detect an interaction effect with 80% power was determined for the pre-specified parameters.
