{"id":"W2784877078","doi":"10.2196/resprot.7918","title":"The Use of Facebook Advertising to Recruit Healthy Elderly People for a Clinical Trial: Baseline Metrics","year":2018,"lang":"en","type":"article","venue":"JMIR Research Protocols","topic":"Social Media in Health Education","field":"Social Sciences","cited_by":58,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"National Institute on Aging","keywords":"Baseline (sea); Advertising; Psychology; Internet privacy; Social media; Medicine; Gerontology; Computer science; World Wide Web; Business","routes":{"ca_aff":false,"ca_fund":false,"ca_venue":true,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":["metaresearch"],"consensus_categories":[],"category_scores_codex":[0.07740436,0.0007188004,0.001068685,0.002706248,0.001265948,0.002956122,0.0006954405,0.001154424,0.003301678],"category_scores_gemma":[0.1541049,0.0003541459,0.001392922,0.002460332,0.0008233264,0.002690013,0.001516711,0.001166102,0.001151215],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001851373,"about_ca_system_score_gemma":0.002604927,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001050884,"about_ca_topic_score_gemma":0.001843607,"domain_scores_codex":[0.9309812,0.03563901,0.01103464,0.002726848,0.0180414,0.001576837],"domain_scores_gemma":[0.8061951,0.08938573,0.05902494,0.007196774,0.03270964,0.005487829],"domain_codex":null,"domain_gemma":"methods","domain_candidate":"methods","domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.009117278,0.002668959,0.8254824,0.001835827,0.001872133,0.00007292306,0.001703433,0.001162416,0.0008016953,0.0006370844,0.009585268,0.1450606],"study_design_scores_gemma":[0.0007863862,0.01369533,0.9610702,0.0003294875,0.001147995,0.0002647113,0.001016714,0.003491337,0.001900062,0.0006995017,0.01548212,0.0001161585],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"protocol","genre_scores_codex":[0.8843634,0.007750016,0.01821808,0.003795039,0.0003554564,0.03279109,0.01826247,0.0007149157,0.03374961],"genre_scores_gemma":[0.952467,0.0008951332,0.01438003,0.0007322193,0.0002133596,0.02444803,0.004680525,0.00008797167,0.002095828],"genre_candidate":"protocol","genre_consensus":null,"teacher_disagreement_score":0.9225956,"threshold_uncertainty_score":0.4093583,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.8853227018303876,"score_gpt":0.7351994265599769,"score_spread":0.1501232752704107,"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."}}