Both a statistical test of proportional hazards assumption and a graphical examination using Schoenfeld residuals were performed to test the proportional hazards assumption of the Cox regression models [39].
A statistical test of proportional hazards assumption and a graphical examination using Schoenfeld residuals will be carried out to assess the proportional hazards assumption.
Based on graphical examination of the data, a quadratic term for time of day was introduced to model the possible curvilinear association between symptoms and time of day.
After initial descriptive and graphical examination of the response measurements (with a consideration of transformation), we will examine correlations among markers within each of the hypothesized pathways that are being examined between physical activity and breast cancer risk.
Insulin-glucose homeostatic pharmacodynamic (PD) models reported in the literature were not evaluated as TAK-875 did not appear to have an apparent effect on fasting serum insulin based on the graphical examination of fasting serum insulin levels vs. time obtained in this phase 2 study.
Graphical examination of residuals against predicted values did not suggest a violation of the linearity assumption for the independent variables.
In addition to serving the overall statistical protocol, the graphical examination of pair-wise correlations may also serve as a starting point for meta-analysis and the synthesis of several published datasets.
Graphical examination of the data indicates that SA activation exhibited a greater increase across the elbow extension ROM in the traditional, compared to the modified, condition.
