Abstract
Most studies investigating the course of recent-onset low back pain (LBP) included patients from primary care. We aimed to describe the prognosis in people with recent-onset LBP presenting to emergency departments (EDs) and to identify prognostic factors for nonrecovery. This inception cohort study with a 1-year follow-up recruited 600 consecutive acute LBP patients presenting to 4 EDs. The outcomes measured the days to recover from pain, recover from disability, return to previous work hours and duties, and complete recovery. Within 12 months, 73% of participants (95% confidence interval [CI] = 69–77) recovered from pain, 86% (95% CI = 82–90) recovered from disability, 79% (95% CI = 71–87) returned to previous work hours and duties, and 70% (95% CI = 66–74) completely recovered. The median recovery times were 67 days (95% CI = 54–80) to recover from pain, 37 days (95% CI = 31–43) to recover from disability, 37 days (95% CI = 25–49) to return to previous work hours and duties, and 70 days (95% CI = 57–83) to recover completely. Higher pain levels, a higher perceived risk of persistent LBP, more days of reduced activity due to LBP, more pain sites, and higher duration of LBP were associated with complete nonrecovery within 6 months. PerspectiveThis information relates to prognosis and to likely recovery times for patients with recent-onset LBP in EDs. The findings also confirm previous factors associated with poor outcomes in patients with recent-onset LBP.
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