Good evening to all,
I am currently working on a network meta-analysis to assess the effects of A,B,C, and D drugs, utilizing the network command using STATA 17.
I am attempting to investigate local inconsistency between A and B by excuting "network sidesplit A B" , but encountered the following error message, and it didn't work as expected.
"Warning: there is no evidence about the A-B contrast outside trials containing A and B
mvmeta_bscov_proportional: mvmeta_mufrom sigma failed
r(459);"
I suspect that the issue may be related to the lack of appropriate direct and indirect information about A-B during the "network setup" stage. Is there a solution to successfully perform sidesplit in this case?
I have included the analysis data at the bottom of this post.
As a beginner in this field, I am seeking guidance on how to resolve this issue. Your assistance in providing clear instructions would be greatly appreciated.
I am currently working on a network meta-analysis to assess the effects of A,B,C, and D drugs, utilizing the network command using STATA 17.
I am attempting to investigate local inconsistency between A and B by excuting "network sidesplit A B" , but encountered the following error message, and it didn't work as expected.
"Warning: there is no evidence about the A-B contrast outside trials containing A and B
mvmeta_bscov_proportional: mvmeta_mufrom sigma failed
r(459);"
I suspect that the issue may be related to the lack of appropriate direct and indirect information about A-B during the "network setup" stage. Is there a solution to successfully perform sidesplit in this case?
I have included the analysis data at the bottom of this post.
As a beginner in this field, I am seeking guidance on how to resolve this issue. Your assistance in providing clear instructions would be greatly appreciated.
| study_number | drug | event | total_number |
| 1 | 4 | 29 | 400 |
| 1 | 1 | 16 | 400 |
| 2 | 4 | 95 | 1989 |
| 2 | 3 | 80 | 1773 |
| 3 | 3 | 13 | 713 |
| 3 | 1 | 12 | 730 |
| 4 | 3 | 69 | 634 |
| 4 | 4 | 66 | 596 |
| 5 | 4 | 0 | 200 |
| 5 | 1 | 2 | 200 |
| 6 | 4 | 40 | 387 |
| 6 | 1 | 26 | 380 |
| 7 | 2 | 0 | 370 |
| 7 | 1 | 8 | 372 |
| 8 | 2 | 13 | 685 |
| 8 | 1 | 15 | 678 |
| 9 | 3 | 58 | 4623 |
| 9 | 1 | 48 | 4617 |
| 10 | 4 | 961 | 9235 |
| 10 | 1 | 929 | 9186 |
| 11 | 1 | 6 | 100 |
| 11 | 4 | 8 | 100 |
| 12 | 3 | 146 | 6741 |
| 12 | 1 | 111 | 6716 |
| 13 | 1 | 26 | 327 |
| 13 | 4 | 26 | 334 |
