1. Volume 15, Issue 5, Pages 885-894 (May 2015)
Patients with low back pain had distinct clinical course patterns that were typically neither complete recovery nor constant pain. A latent class analysis of longitudinal data 
Alice Kongsted, PhD, Peter Kent, PhD, Lise Hestbaek, PhD, Werner Vach, PhD 
The Spine Journal 
Volume 15, Issue 5, Pages (May 2015)
DOI: /j.spinee
Copyright © 2015 The Authors Terms and Conditions

2. Fig. 1
One-year course of LBP in primary care patients on a population-average level. LBP, low back pain; NRS, numeric rating scale; SD, standard deviation; CI, confidence interval.
The Spine Journal  , DOI: ( /j.spinee )
Copyright © 2015 The Authors Terms and Conditions

3. Fig. 2
Mean LBP intensity and mean number of LBP days in eight trajectories identified in Model (iv); 1: Recovery (25% chiropractic practice [CP]; 10% general practice [GP]), 2: mild episodic (22% CP; 14% GP), 3: moderate ongoing not daily (13% CP; 17% GP), 4: late recovery (13% CP; 6% GP), 5: improvement with relapse (11% CP; 13% GP), 6: slow improvement (8% CP; 15% GP), 7: severe ongoing (3% CP; 18% GP), and 8: moderate ongoing daily (5% CP; 6% GP). Numbers in brackets are proportions in CP and GP. Bars indicate +½standard deviation. LBP, low back pain.
The Spine Journal  , DOI: ( /j.spinee )
Copyright © 2015 The Authors Terms and Conditions

4. Fig. 3
Examples of individual trajectories in the subgroups from Model (iv) that illustrate the course of LBP intensity. Observations from two individuals with a posterior probability of >0.99 of belonging to that subgroup are presented for each subgroup. LBP, low back pain.
The Spine Journal  , DOI: ( /j.spinee )
Copyright © 2015 The Authors Terms and Conditions

5. Fig. 4
Associations of identified subgroups with baseline characteristics and outcomes in 12 latent class models. The odds illustrated are rounded values. Exact estimates are given in Appendix C. LBP, low back pain; slow improve, slow improvement.
The Spine Journal  , DOI: ( /j.spinee )
Copyright © 2015 The Authors Terms and Conditions