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Study materials
| APF | TLIF | |||
|---|---|---|---|---|
| n | % | n | % | |
| Enrolled | 68 | M: 56 F: 44 |
65 | M: 43 F: 57 |
| Clinic charts available | 68 | 100 | 65 | 100 |
| Hospital charts available | 55 | 80.9 | 57 | 87.7 |
| Returned questionnaires | 44 | 64.7 | 41 | 63.1 |
| Complete set of radiographic documents available for analysis (CT scans) | 40 | 58.8 | 35 | 53.8 |
