{"doi":"10.1001/jamasurg.2022.3110","title":"Quantifying Frailty Requires a Conceptual Model Before a Statistical Model","abstract":"We congratulate Le et al 1 on their recently published article in JAMA Surgery for highlighting the importance of frailty assessment in improving surgical outcomes.However, we have several reservations regarding the methods and conclusions.First, Le et al 1 reportedly used the recalibrated administrative Risk Analysis Index, 2 but their novel technique uses International Classification of Diseases codes to quantify cognitive decline and cancer status.Although such a crosswalk is theoretically plausible, the alteration degrades model performance beyond recognition.For example, when calculated accurately in the American College of Surgeons National Surgical Quality Improvement Program (2017-2018), the area under the curve for 30-day mortality discrimination using the Risk Analysis Index (0.82[95%CI,0.82-0.83])was superior to the modified Frailty Index (0.58 [95% CI, 0.57-0.58]),substantially better than the novel Risk Analysis Index method","journal":"JAMA Surgery","year":2022,"id":294660,"datarank":0.16479184330021646,"base_score":1.0986122886681096,"endowment":1.0986122886681096,"self_citation_contribution":0.16479184330021646,"citation_network_contribution":0.0,"self_endowment_contribution":0.16479184330021646,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":2,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9581,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2022-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":320949,"name":"Shipra Arya","orcid":"0000-0002-0404-9325","position":1,"is_corresponding":false},{"id":320951,"name":"Daniel E. Hall","orcid":"0000-0001-6382-0522","position":2,"is_corresponding":false},{"id":681891,"name":"Katherine M. Reitz","orcid":"0000-0002-9397-321X","position":0,"is_corresponding":true}],"reference_count":6,"raw_metadata":{"citation_network_status":"fetched"},"created_at":"2026-07-19T00:31:01.450041Z","pmid":"35947376","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}