Predicting clinically important difference in lumbar decompression surgery: the influence of demographic, clinical, and radiographic characteristics

Shorter symptom duration, greater baseline disability, favorable pelvic alignment, and procedure type were independently associated with MCID achievement. The overall 4-point, 3-point for laminectomy/laminotomy, and 2-point for microdiscectomy risk scores are a practical tool for individualized preoperative counseling and surgical planning.