Table 3 Regression model. Model 1 includes all the relevant variables based on expert’s opinion. Model 2–4 exclude variables in a backward regression model according to p values > 0.1. Gender, age, and hose figure test were excluded from the model. The VT pre-test score, the sonography course, and the 3D model remained in the regression model
From: The impact of 3D printed models on spatial orientation in echocardiography teaching
Model | Included variable | Excluded variable | Method |
|---|---|---|---|
1 | Pre-test VT score Age Sonography course Hose figure test Gender 3D model | – | Inclusion |
2 | – | Gender | Backwards, p of F > =0.1 |
3 | – | Age | Backwards, p of F > =0.1 |
4 | – | Hose figure test | Backwards, p of F > =0.1 |