Skip to main content

Table 4 Results of First Step of Algorithm (Determining if a surgical case represents one of the four procedure/indication combinations of interest)

From: Validation of an electronic coding algorithm to identify the primary indication of orthopedic surgeries from administrative data

Procedure/Indication Sensitivity (95% Confidence Interval) Specificity (95% Confidence Interval)
Lumbar Spinal Surgery/Lumbar Herniated Disc 0.96 (0.87, 1.00) 0.74 (0.69, 0.79)
Lumbar Spinal Surgery/Lumbar Spinal Stenosis 0.91 (0.85, 0.95) 0.82 (0.77, 0.87)
Knee Arthroplasty/Knee Osteoarthritis 0.97 (0.92, 0.99) 0.84 (0.80, 0.88)
Hip Arthroplasty/Hip Osteoarthritis 0.99 (0.96, 1.00) 0.87 (0.83, 0.91)
  1. Note: “Exact” Clopper-Pearson Confidence Intervals are used