Table 5.
Linear regression analysis STAI and APAIS.
| Single Linear Regression | Multiple Linear Regression * | |||||
|---|---|---|---|---|---|---|
| β [95% CI] | p-Value | R² | β [95% CI] | p-Value | R² | |
| STAI State Anxiety |
−0.28 [−4.51; 3.96] |
0.90 | <0.001 | 0.62 [−2.58; 3.82] |
0.70 | 0.47 |
| STAI Trait Anxiety |
0.50 [−2.54; 3.53] |
0.69 | 0.001 | −0.65 [−2.63; 1.32] |
0.51 | 0.61 |
| APAIS Anxiety |
0.28 [−0.89; 1.45] |
0.64 | 0.002 | 0.29 [−0.73; 1.30] |
0.56 | 0.30 |
| APAIS Need for information |
−0.05 [−0.99; 0.87] |
0.90 | <0.001 | −0.11 [−0.95; 0.73] |
0.79 | 0.23 |
Regression coefficients are presented for the intervention group compared to the control group. * Multiple linear regression analyses are adjusted for baseline scores, age, sex, and number of days before surgery. STAI = State–Trait Anxiety Inventory, APAIS = Amsterdam Pre-Operative Anxiety and Information scale.