This barrier effectively destroys the system as a platform for exploratory, educational use.
Another analogous approach is gene set enrichment analysis developed by the Broad Institute.[6], [7] Fortunately, MCM is flexible enough to accommodate other data types including free text clinical data, making it an ideal platform for exploratory studies using data from the EHR.
ViVA is a system for exploratory data analysis using novel mathematical models and methods for visualization of variance.
31 For exploratory purposes we used Fisher's exact tests and Mann-Whitney U tests to compare proportions and continuous variables between the groups.
For exploratory purposes, we used qualitative interviews with CHC patients in close proximity to their own CHC treatment decisions in order to provide a grounded description of the specific attributes that influence patients' decisions around CHC treatment, and relationships between those attributes.
In order to determine the structure of the 57 DSQOLS burden items, the database study sample (N = 1,021) was split randomly in two (using SPSS), with one-half of the sample used for exploratory factor analyses (EFAs) (n = 510) and one-half used for confirmatory factor analysis (CFA) (n = 511).
In addition, for exploratory purposes, we will use the FSDS-R to assess sexual distress in men.
Half the sample (n = 142) was used for exploratory factor analysis (EFA), with the holdout sample (n = 154) used for confirmatory factor analysis (CFA) to explore the underlying structure of the scale.
With regard to the remaining QoL measures, which were used for exploratory purposes, there was a larger deterioration in role functioning scores from baseline to 26 weeks in the C6 group (mean score change −19.0 vs −7.4 in the C3 group, P<0.05) and increased nausea and vomiting by 18 weeks (mean score change +4.2 vs −0.4 in the C3 group, P<0.05).
Because the CART approach does not make assumptions regarding the distribution of the dependent variable, it can be used in situations where other multivariate modeling techniques often used for exploratory predictive risk modeling would not be appropriate – namely in situations where data are not normally distributed.
Survival curves will be constructed using the Kaplan-Meier method, and long-rank test will be used for exploratory univariate analysis of survival differences between groups.
