Results on secondary outcomes
| MT group | Non-MT group | |
| Length of spinal pain episode | ||
| Total no of episodes | 456 (55%) | 374 (45%) |
| Median (IQR) (no of weeks) | 2 (1–6) | 2 (1–5) |
| β-coefficient (95% CI) | 0.11 (−0.07 to 0.29) | |
| P value | 0.21 | |
| Total duration of complaint time per child | ||
| Total no of pain weeks | 1–114 | 1–111 |
| Median (IQR) | 9 (IQR 4–22) | 7 (IQR 4–18) |
| IRR (95% CI) | 1.16 (0.92 to 1.48) | |
| P value | 0.22 | |
| Global perceived effect | ||
| No of children in analysis* | 96 (52%) | 86 (48%) |
| OR (95% CI) | 2.22 (1.19 to 4.15) | |
| P value | 0.01 | |
| NRS change | ||
| No of children in analysis* | 112 (50%) | 111 (50%) |
| Mean (SD) | 2.2 (2.5) | 2.3 (2.7) |
| β-coefficient (95% CI) | 0.10 (−0.57 to 0.78) | |
| P value | 0.76 | |
*Number of children in analysis of the first episode due to missing data.
IRR, incidence rate ratio; NRS, Numerical rating Scale.