{"id":"W2025669422","doi":"10.1097/00005768-200305001-01352","title":"EFFECT OF OPIOID ANALGESIA ON LUMBAR EXTENSOR ENDURANCE IN CHRONIC LOW BACK PAIN.","year":2003,"lang":"en","type":"article","venue":"Medicine & Science in Sports & Exercise","topic":"Anesthesia and Pain Management","field":"Medicine","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Alberta","funders":"","keywords":"Medicine; Fentanyl; Anesthesia; Placebo; Lumbar; Opioid; Crossover study; Low back pain; Physical therapy; Surgery; 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":[0.0002322675,0.0002527587,0.0002972718,0.00006895409,0.0001096858,0.0001293419,0.0001360719,0.0002821242,0.001580296],"category_scores_gemma":[0.0008570203,0.0000839416,0.0001260294,0.00006606071,0.000318102,0.0001258695,0.0001002788,0.0003633766,0.0001625751],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0001236352,"about_ca_system_score_gemma":0.0001549315,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0006569673,"about_ca_topic_score_gemma":0.001329161,"domain_scores_codex":[0.999845,0.0000623169,0.00001011116,0.00001055098,0.00003181058,0.00004014265],"domain_scores_gemma":[0.9995416,0.0002228891,0.00009123697,0.00001791332,0.00001944946,0.0001069288],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"design_other","study_design_gemma":"observational","study_design_scores_codex":[0.2531487,0.01934306,0.04017235,0.00247513,0.0003686928,0.000872782,0.0003116592,0.0008061243,0.2919621,0.0001770875,0.0009505244,0.3894119],"study_design_scores_gemma":[0.01734431,0.4684434,0.4968468,0.0001537716,0.0002619259,0.001041085,0.0001764069,0.0007647797,0.01340496,0.0000908769,0.001455461,0.00001617912],"study_design_candidate":"observational","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9967484,0.002519324,0.00008455075,0.00007109689,0.00002308534,0.00002887157,0.0000351474,0.000007038162,0.000482523],"genre_scores_gemma":[0.9979445,0.001245455,0.0001899481,0.00008420323,0.00005406685,0.00002831594,0.00005599621,0.000001548588,0.0003959837],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.001580296,"threshold_uncertainty_score":0.005286634,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.008483022357131914,"score_gpt":0.2666505919869101,"score_spread":0.2581675696297782,"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."}}