Chronic Low Back Pain: The 15% Who Improve

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Many people living with chronic low back pain believe that the best they can hope for is management, not meaningful change. A recent large study shows that 15% improve. Here is what characterizes this fortunate subgroup, and what we can learn from it.

Pain trajectories

In a new large‑scale study, researchers followed 2,713 people with chronic low back pain for two years, tracking their pain intensity at multiple time points. Their findings show that while most people experience stable pain over time, a meaningful minority improve.

The researchers identified four trajectories:

• Moderate stable pain: 40% (pain stays around 6/10 over two years)

• Mild stable pain: 30% (pain stays around 4–5/10)

• High persistent pain: 16.4% (pain remains severe around 8/10)

• Gradually improving pain: 14.6% (pain drops from 4.08 to 2.10)

“The gradually improving pain cluster showed clinically meaningful improvement (mean pain intensity: from 4.08 to 2.10 over two years).”

That drop, about two points on a 0–10 pain scale, meets commonly used thresholds for a minimal clinically important difference, meaning the change is large enough that patients are likely to notice and value it.

An earlier study in older adults came to a similar conclusion:

Small subgroups showed dramatic improvement from baseline to 1 year (17% with major improvement in Roland (disability) score, pain intensity, or both).

A note of caution for this study: it included patients with varying durations of low back pain, and it is known that low back pain of recent onset shows high improvement rates.

What factors are associated with better trajectories?

The two studies referenced earlier and a third one convey a similar message. Patients are more likely to experience improvement if they have:

• Younger age

• Shorter pain duration

• Lower pain intensity

• Higher physical activity levels

• Lower sleep disturbance

• Lower pain interference (less disruption in daily activities, work, social life, and sleep)

• Fewer depressive symptoms

• Less pain-related fear

• Higher confidence in improvement

• Less pain catastrophizing (negative thinking about pain that includes magnifying the threat of pain, feeling helpless about it, and ruminating on pain sensations)

Some of these factors are modifiable, which leads us to the next topic.

A critical point: these factors do not prove what works

These associations make intuitive sense. It is therefore tempting to conclude:

• “If I reduce catastrophizing, my pain will improve.”

• “If I sleep better, I will move into the improving trajectory.”

• “If I exercise more, I can avoid the high‑pain group.”

• Etc.

These conclusions are possible, but the studies quoted above cannot make causal claims. Here’s why.

Observational design

The studied observed people over time without assigning treatments. It can detect relationships but cannot prove that one factor causes another.

Confounding

For instance, people who sleep better or catastrophize less may differ in other important ways (access to care, overall health, activity levels, socioeconomic factors) that actually drive improvement.

No evaluation of efficacy

Causal claims ideally require randomized controlled trials (RCTs), in which patients are randomly assigned to treatments. These studies did not test the effect of sleep, catastrophizing, activity levels, or other modifiable factors.

Another important limitation: Participants may have received effective care or changed behaviors, but the studies did not track which interventions influenced pain.

Because of these limitations, the correct interpretation is that the identified factors are predictors or correlates of trajectory membership, and not proven mechanisms that, if changed, will produce improvement.

Nevertheless, there is evidence supporting these and other treatments

Other investigations have employed appropriate methods to evaluate treatment efficacy, such as randomly assigning patients to various treatments.

This section emphasizes some positive studies, without attempting to be comprehensive or provide a balanced view of the literature, and acknowledging that negative studies have also been published.

Cognitive‑behavioral therapy (CBT) may reduce catastrophizing and pain

A 2026 systematic review of 14 RCTs found that CBT reduced pain catastrophizing, pain intensity, and disability in chronic musculoskeletal pain.

Exercise and graded activity may improve disability and pain

A 2022 RCT in JAMA showed that a graded sensorimotor retraining intervention improved pain intensity at 18 weeks, although the improvements were modest.

Sleep‑focused interventions improve sleep and sometimes pain

A 2022 systematic review of 42 RCTs found that non‑pharmacological sleep interventions improved sleep quality in chronic pain, with some evidence of pain reduction.

Final insights

Improvement in chronic low back pain is possible

About 15% of patients with chronic low back pain can improve meaningfully. That’s not a negligible number, and is a reminder that chronic pain is not always a fixed destiny. Recognizing this can help avoid discouraging comparisons and focus on their own progress.

15% may be an underestimate

The observational studies discussed in this blog probably included an unspecified percentage of patients who, for various reasons, did not receive all available treatments. Consequently, the 15% might underestimate the actual percentage of those who can improve with treatment.

The factors that we can influence

The factors associated with better trajectories overlap with common clinical targets in current pain management:

• Improving sleep quality

• Reducing pain‑related fear and catastrophizing, and improving mental health in general

• Increasing functional activity

• Reducing pain interference with daily life

Sadly, many patients will experience little to no pain relief from these interventions. However, some will benefit, and even if pain relief is not achieved, there may still be noticeable improvements in quality of life.

The treatments that can move the needle above the 15%

• For patients with facet joint pain, radiofrequency ablation can achieve excellent results, provided that patients are properly selected and the procedure is performed accurately.

• Despite the limited evidence and unclear mechanism of action, trigger point injections and dry needling can provide pain relief.

• There is a growing body of evidence supporting treatments like basivertebral ablation for discogenic pain. (Find out more here about realistic expectations from procedures.)

• Medications such as duloxetine or muscle relaxants, can also be beneficial.

• Explaining how pain works to patients can contribute to improvement.

• Given our current understanding, I advise against starting opioids due to their limited or lack of effectiveness, the development of tolerance leading to diminished effects over time, and associated health risks.