Table 2.
Relationship between QTF categories and global perceived effect (GPE)
| QTF categories | 2 weeks, proportion improved % (95% CI) |
3 months, proportion improved % (95% CI) |
12 months, proportion improved % (95% CI) |
|||
|---|---|---|---|---|---|---|
| Chiropractic patients P < 0.01* |
General practice patients P < 0.01* |
Chiropractic patients P = 0.2* |
General practice patients P = 0.2* |
Chiropractic patients P = 0.4* |
General practice patients P = 0.5* |
|
| All patients | 74 (70–77) | 36 (31–42) | 82 (79–85) | 60 (54–66) | 73 (23–30) | 54 (48–60) |
| ‘LBP alone’ | 77 (73–81) | 49 (38–60) | 82 (78–85) | 69 (58–78) | 74 (69–78) | 53 (42–65) |
| ‘LBP + leg pain above the knee’ | 72 (64–79) | 43 (28–60) | 85 (79–90) | 66 (49–80) | 75 (67–81) | 66 (48–80) |
| ‘LBP + leg pain below the knee’ | 61 (46–74) | 19 (9–38) | 73 (59–83) | 46 (29–65) | 63 (49–76) | 54 (34–72) |
| ‘LBP + NRI’ | 40 (17–68) | 20 (7–45) | 87 (55–97) | 56 (31–78) | 73 (43–91) | 44 (20–70) |
Proportions improved after 2 weeks, 3 months and 12 months
LBP low back pain, NRI nerve root involvement
*P-value for an overall association between QTF categories and GPE