For any imaging, the pooled proportion was 24.8% (95% CI 19.3%to 31.1%). Primary care: moderate quality evidence that simple imaging proportion was 16.3% (95% CI 12.6% to 21.1%) and complex imaging was 9.2% (95% CI 6.2% to 13.5%). They represented 19 451 749 consultations for LBP that had resulted in 4 343 919 imaging requests/events over 21 years. We assessed study quality and calculated pooled proportions by care setting and imaging type, with strength of evidence assessed using the GRADE system.Ĥ5 studies were included. Observational designs and controlled trials that reported imaging for patients presenting to primary care or emergency care for LBP. ![]() We also examined the effect of study-level factors on estimates of imaging proportion.Įlectronic searches of MEDLINE, Embase and CINAHL databases from January 1995 to December 2017.Įligibility criteria for selecting studies To (1) estimate the proportion of patients seeking care for low back pain (LBP) who are imaged and (2) explore trends in the proportion of patients who received diagnostic imaging over time.
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