Figure 1From: Spinal pain in adolescents: prevalence, incidence, and course: a school-based two-year prospective cohort study in 1,300 Danes aged 11–13 The association between frequency and pain intensity at age 11–13 and two years later. FPS-R = Faces pain scale – revised; LBP = Low back pain; MBP = Mid back pain; NP = Neck pain. Error bars show 95% confidence intervals.Back to article page