Figure 56Psychological therpies versus waitlist, attention control, placebo intervention, or pharmacological treatment for chronic tension headache: effects on pain (success)
AC/WL = an attention control arm and a waitlist arm; CBT = cognitive-behavioral therapy; CBT/RLX = cognitive-behavioral therapy with a relaxation component; CI = confidence interval; PB = placebo (pill); PHARM = standard pharmacological therapy; RLX = relaxation therapy; RR = risk ratio; UC = usual care
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