{"id":"W4283837487","doi":"10.1136/bmj-2022-071502","title":"Effectiveness of a fourth dose of covid-19 mRNA vaccine against the omicron variant among long term care residents in Ontario, Canada: test negative design study","year":2022,"lang":"en","type":"article","venue":"BMJ","topic":"SARS-CoV-2 and COVID-19 Research","field":"Medicine","cited_by":149,"is_retracted":false,"has_abstract":true,"ca_institutions":"Impact; St Joseph's Health Centre; McMaster University; University Health Network; University of Toronto; Public Health Ontario","funders":"Agency for Healthcare Research and Quality","keywords":"Medicine; Confidence interval; Vaccination; Logistic regression; Coronavirus disease 2019 (COVID-19); Odds ratio; Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2); Vaccine efficacy; Internal medicine; Immunology; Disease; Infectious disease (medical specialty)","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":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.002189229,0.0001970703,0.00054862,0.0002332494,0.0001707036,0.00001178788,0.0003962303,0.00004557247,0.00003132686],"category_scores_gemma":[0.002726137,0.0001505704,0.00007608594,0.0005811427,0.00006803365,0.00004100144,0.0003448367,0.0005470216,6.436256e-7],"about_ca_system_candidate":true,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.003237637,"about_ca_system_score_gemma":0.008753289,"about_ca_topic_candidate":true,"about_ca_topic_consensus":true,"about_ca_topic_score_codex":0.9752039,"about_ca_topic_score_gemma":0.9840958,"domain_scores_codex":[0.9967304,0.001191821,0.000507039,0.0003814956,0.0008569895,0.0003322187],"domain_scores_gemma":[0.9961637,0.002711362,0.0002400908,0.0005920939,0.0002219759,0.00007079259],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.003302724,0.0006096252,0.9754419,0.0004521912,0.0001742593,0.001902399,0.007424361,0.0003809546,0.009660113,0.00000224303,0.0004340706,0.0002151804],"study_design_scores_gemma":[0.007504956,0.001255215,0.9695939,0.000199705,0.00008689481,0.00001942269,0.006330363,0.00007522642,0.0147042,0.00002001782,0.00007449633,0.0001356231],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9945738,0.000134863,0.00003521807,0.0001458241,0.0001154767,0.004693616,0.00003257548,0.0000112801,0.0002573787],"genre_scores_gemma":[0.9980164,9.14015e-7,0.00002930823,0.001354348,0.000032688,0.0005036326,0.000006484796,0.00002674117,0.00002955141],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.008891943,"threshold_uncertainty_score":0.9968662,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0359359704806243,"score_gpt":0.3338630878506268,"score_spread":0.2979271173700025,"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."}}