{"id":"W2944879323","doi":"10.1016/j.spinee.2019.05.008","title":"Effect of preoperative symptom duration on outcome in lumbar spinal stenosis: a Canadian Spine Outcomes and Research Network registry study","year":2019,"lang":"en","type":"article","venue":"The Spine Journal","topic":"Spine and Intervertebral Disc Pathology","field":"Medicine","cited_by":43,"is_retracted":false,"has_abstract":false,"ca_institutions":"Krembil Foundation; Université Laval; University of Alberta; Canada East Spine Centre; Ottawa Hospital; University Health Network; Health Sciences Centre; University of Calgary; Vancouver General Hospital; University of British Columbia; Dalhousie University; University of Toronto; Western University; St. Michael's Hospital; University of Ottawa; McGill University; University of Manitoba; Foothills Medical Centre","funders":"AOSpine; Medtronic; Orthopaedic Research and Education Foundation","keywords":"Medicine; Oswestry Disability Index; Lumbar spinal stenosis; Surgery; Neurogenic claudication; Context (archaeology); Spinal stenosis; Decompression; Lumbar; Claudication; Stenosis; Back pain; Physical therapy; Low back pain; Vascular disease; Internal medicine","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":true,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.002322803,0.0007299536,0.001062498,0.0019532,0.002553634,0.001818514,0.00296907,0.001355318,0.002295829],"category_scores_gemma":[0.008663748,0.0007378398,0.001730669,0.006720894,0.001425018,0.001118014,0.001660611,0.001700455,0.000256096],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.01144128,"about_ca_system_score_gemma":0.02163766,"about_ca_topic_candidate":true,"about_ca_topic_consensus":true,"about_ca_topic_score_codex":0.9171093,"about_ca_topic_score_gemma":0.9381509,"domain_scores_codex":[0.9966588,0.0004235615,0.0003191723,0.0006195506,0.0008110249,0.001168015],"domain_scores_gemma":[0.9909656,0.000934565,0.002872521,0.0007675196,0.002562308,0.001897471],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0002225442,0.00005925093,0.9979653,0.00001868033,0.0002036721,0.00007323459,0.0001394818,0.00004410611,0.00005196439,0.00004981051,0.0005043058,0.0006677468],"study_design_scores_gemma":[0.00002226139,0.00003344503,0.9991492,0.00001453708,0.0001005063,0.00005143507,0.0003221653,0.00008817476,0.00001107963,0.00001748977,0.0001758543,0.00001380895],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9931775,0.0007790726,0.00005900486,0.0003008168,0.00002240867,0.00002716304,0.004244463,0.000009339612,0.001380318],"genre_scores_gemma":[0.9962797,0.0003508125,0.00009115412,0.00009517568,0.00001783544,0.00002121244,0.002799483,0.000007609681,0.0003370058],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.08289069,"threshold_uncertainty_score":0.1667576,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0367969423134546,"score_gpt":0.389599787229129,"score_spread":0.3528028449156744,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}