The Nordic Maintenance Care program: Effectiveness of chiropractic maintenance care versus symptom-guided treatment for recurrent and persistent low back pain—A pragmatic randomized controlled trial

Figure 3

Mean difference in number of days with bothersome LBP per week, primary analysis.

Variables in GEE model: Group, Time, Time2, Group*Time, Group*Time2; the difference is statistically significant (at 5% level) between week 24 to 37;
LBP, Non-specific Low Back Pain;
MC, Maintenance Care;
C, Control;
95% CI, 95% Confidence Interval.

Fig 3