Table 3 ANOVA (Analysis of variance) for study of main effects, two-way interactions and quadratic effects of high-risk CPVs (Critical Procedure Variables) on selected critical responses R1 and R2 using central composite design and MINITAB 18 software
Source | Degree of freedom | Adjusted SS | Adjusted MS | F-Value | P-Value | Level of significance |
|---|---|---|---|---|---|---|
ANOVA for Response – R1 | ||||||
Model | 5 | 52.3728 | 10.4746 | 34.18 | 0.000 | Significant |
Linear | 2 | 48.5472 | 24.2736 | 79.21 | 0.000 | Significant |
CPV—A | 1 | 48.4942 | 48.4942 | 158.24 | 0.000 | Significant |
CPV—B | 1 | 0.0530 | 0.0530 | 0.17 | 0.690 | Non-significant |
Square | 2 | 3.8225 | 1.9113 | 6.24 | 0.028 | Significant |
CPV—A*CPV—A | 1 | 3.6088 | 3.6088 | 11.78 | 0.011 | Significant |
CPV—B*CPV—B | 1 | 0.4987 | 0.4987 | 1.63 | 0.243 | Non-significant |
2-Way Interaction | 1 | 0.0030 | 0.0030 | 0.01 | 0.924 | Non-significant |
CPV—A*CPV—B | 1 | 0.0030 | 0.0030 | 0.01 | 0.924 | Non-significant |
ANOVA for Response – R2 | ||||||
Model | 5 | 3.15345 | 0.63069 | 53.55 | 0.000 | Significant |
Linear | 2 | 1.69232 | 0.84616 | 71.84 | 0.000 | Significant |
CPV—A | 1 | 0.00000 | 0.00000 | 0.00 | 0.994 | Non-significant |
CPV—B | 1 | 1.69232 | 1.69232 | 143.69 | 0.000 | Significant |
Square | 2 | 1.46112 | 0.73056 | 62.03 | 0.000 | Significant |
CPV—A*CPV—A | 1 | 0.01973 | 0.01973 | 1.67 | 0.237 | Non-significant |
CPV—B*CPV—B | 1 | 1.46082 | 1.46082 | 124.03 | 0.000 | Significant |
2-Way Interaction | 1 | 0.00000 | 0.00000 | 0.00 | 1.000 | Non-significant |
CPV—A*CPV—B | 1 | 0.00000 | 0.00000 | 0.00 | 1.000 | Non-significant |