| Compare groups | x2 value | P value | Compare groups | x2 value | P value |
| Group 1 and 2 | 0.22 | >0.05 | Group 2 and 4 | 7.81 | >0.05 |
| Group 1 and 3 | 1.82 | >0.05 | Group 2 and 5 | 9.56 | >0.05 |
| Group 1 and 4 | 10.02 | >0.05 | Group 3 and 4 | 3.76 | >0.05 |
| Group 1 and 5 | 11.95 | >0.05 | Group 3 and 5 | 5.07 | >0.05 |
| Group 2 and 3 | 0.82 | >0.05 | Group 4 and 5 | 0.10 | >0.05 |