{"doi":"10.14283/jpad.2024.109","title":"Performance of a Short Version of the Everyday Cognition Scale (ECog-12) to Detect Cognitive Impairment","abstract":"BACKGROUND: The Everyday Cognition (ECog) 12-item scale, a functional decline measurement, can distinguish dementia from cognitively unimpaired (CU). Limited data compare ECog-12 performance by raters (self vs. informant) and scoring systems (average numeric vs. categorical grouping) to differentiate cognitive statuses. OBJECTIVES: To evaluate the performance of ECog-12 in differentiation cognitive statuses. DESIGN: A cross-sectional diagnostic test study. SETTING AND PARTICIPANTS: Data from the Alzheimer's Disease Neuroimaging Initiative (ADNI) study are analyzed. Participants were aged 55-90 years old divided into subgroups based on diagnostic criteria. MEASUREMENTS: We evaluated ECog-12 performance across different diagnostic groups, such as CU vs cognitive impairment (CI; mild cognitive impairment (MCI), and dementia), and the association between ECog-12 and CI. This procedure was repeated for self- and partner (informant)-reports. Additionally, types of ECog scores were also assessed, where an average ECog score was calculated (continuous numeric) as well as a categorical grouping (\"any occasional declined\" or \"any consistently declined\") based on item-level responses to ECog questions. RESULTS: ECog-12 cut-off scores of 1.36 (self-reported) and 1.45 (partner-reported) distinguish CU from CI with AUC 0.7 and 0.78, respectively. Adding a memory-concern question improved self-reported-ECog AUC to 0.79. Self- and partner-reported \"consistently-declined\" ECog-12 categorical grouping provided AUC 0.69 and 0.78. The study partner reported ECog-12 showed a greater association with CI than self-reported, with odds ratios of 35.45 and 8.79, respectively. CONCLUSION: Study partner-reported ECog scores performed better than self-reported ECog-12 in differentiating cognitive statuses, and a higher study partner reported ECog score was a higher prognostic risk for CI. A memory concern question could enhance self-reported ECog-12 performance. This further emphasizes the need to obtain data from study partners for research and clinical practice.","journal":"The Journal of Prevention of Alzheimer s Disease","year":2024,"id":438493,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":10,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9556,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2024-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1249166,"name":"A Diaz","orcid":null,"position":1,"is_corresponding":false},{"id":494343,"name":"Miriam T. Ashford","orcid":"0000-0003-4045-6435","position":2,"is_corresponding":false},{"id":896071,"name":"Anna Aaronson","orcid":"0000-0002-5231-9684","position":3,"is_corresponding":false},{"id":846413,"name":"Melanie J. Miller","orcid":"0000-0002-7189-1109","position":4,"is_corresponding":false},{"id":1249167,"name":"Jaemyeong Kang","orcid":null,"position":5,"is_corresponding":false},{"id":1228530,"name":"Sharon Mackin","orcid":"0009-0008-6867-8615","position":6,"is_corresponding":false},{"id":1228531,"name":"R Tank","orcid":"0009-0007-5118-219X","position":7,"is_corresponding":false},{"id":1242012,"name":"Bernard Landavazo","orcid":null,"position":8,"is_corresponding":false},{"id":494342,"name":"Diana Truran","orcid":"0000-0001-7159-2216","position":9,"is_corresponding":false},{"id":1249168,"name":"S T Farias","orcid":null,"position":10,"is_corresponding":false},{"id":51702,"name":"Michael W. Weiner","orcid":"0000-0002-0144-1954","position":11,"is_corresponding":false},{"id":479433,"name":"Rachel L. Nosheny","orcid":"0000-0003-4995-8319","position":12,"is_corresponding":false},{"id":1228528,"name":"Manchumad Manjavong","orcid":"0000-0002-9334-5571","position":0,"is_corresponding":true}],"reference_count":36,"raw_metadata":null,"created_at":"2026-07-19T02:00:43.618468Z","pmid":"39559885","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":[]}