Table 3.
Quality assessment of economic evaluations in lumbar spinal fusion, 2005
| 1a | 1b | 2a | 2b | 3a | 3b | 4a | 4b | 4c | 5a | 5b | 5c | 6a | 6b | 6c | 6d | 7a | 7b | 7c | Sum | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fritzell | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | ? | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 16/18 |
| Hacker | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | ? | 0 | 8/18 |
| Katz | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | ? | 0 | 0 | 0 | 0 | 1 | 0 | 9/18 |
| Klara | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | ? | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 9/18 |
| Kuntz | 1 | 1 | 0 | 0 | 0 | ? | 1 | 0 | 1 | 1 | 1 | ? | 1 | 1 | 1 | 0 | ? | ? | 1 | 10/16 |
| Ray | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | ? | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 8/18 |
| Schöfferman | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 11/19 |
| Negatives | 2 | 5 | 1 | 5 | 2 | 0 | 1 | 4 | 2 | 2 | 1 | 1 | 3 | 3 | 5 | 6 | 5 | 0 | 5 | 54/126 |
0 negative, 1 positive and ? ambiguous