Pooled estimates of mean pain and disability*
| Group | Pooled estimate of mean pain (95% CI) | Pooled estimate of mean disability (95% CI) | ||
|---|---|---|---|---|
| Inception time uncorrected | Inception time corrected | Inception time uncorrected | Inception time corrected | |
| Acute low-back pain | ||||
| Baseline | 52 (48–57) | 69 (61–78) | 45 (42–48) | 57 (52–62) |
| 6 wk | 23 (21–25) | 28 (25–31) | 24 (23–26) | 28 (26–30) |
| 26 wk | 12 (9–15) | 12 (8–15) | 16 (15–18) | 17 (15–19) |
| 52 wk | 6 (3–10) | 4 (0–9) | 13 (11–15) | 11 (9–14) |
| Persistent low-back pain | ||||
| Baseline | 51 (44–59) | NA† | 27 (24–30) | 51 (39–63) |
| 6 wk | 33 (29–38) | 55 (46–63) | 21 (19–22) | 28 (25–31) |
| 26 wk | 26 (20–33) | 29 (23–35) | 18 (16–20) | 19 (18–21) |
| 52 wk | 23 (16–30) | 17 (7–27) | 17 (14–19) | 15 (12–18) |
Note: CI = confidence interval, NA = not available.
↵* All values are expressed in a scale ranging from 0 (i.e., no pain or disability) to 100 (i.e., maximum pain or disability).
↵† The estimates of baseline values were not obtained for analyses of inception time corrected time for pain outcomes because this involved extrapolating the fitted curves substantially beyond the range of the data.