Conservative care with or without manipulative therapy in the management of back and/or neck pain in Danish children aged 9–15: a randomised controlled trial nested in a school-based cohort

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Published online 2018 Sep 10. doi: 10.1136/bmjopen-2017-021358

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Table 5

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.