{"doi":"10.1002/9781118625392.wbecp194","title":"Statistical Power","abstract":"<jats:title>Abstract</jats:title>\n          <jats:p>The term “statistical power” is used in null hypothesis significance testing (NHST) to refer to the probability of rejecting the null hypothesis (thus providing support to the theory being tested) when the null hypothesis is false (i.e., the theory is true). Adequate power is having a large enough probability of rejecting the null hypothesis when the theory is true and of clinical and/or practical significance. Consideration of power in designing NHST studies prevents the waste of time, resources, and sometimes reputations, that accompany failed studies, those that neither support nor clearly refute the theory being tested, leaving the state of knowledge where it was before the study was done.</jats:p>","journal":"The Encyclopedia of Clinical Psychology","year":2015,"id":592640,"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":0,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1516590,"name":"Helena Chmura Kraemer","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Statistical Power","abstract":"<jats:title>Abstract</jats:title>\n          <jats:p>The term “statistical power” is used in null hypothesis significance testing (NHST) to refer to the probability of rejecting the null hypothesis (thus providing support to the theory being tested) when the null hypothesis is false (i.e., the theory is true). Adequate power is having a large enough probability of rejecting the null hypothesis when the theory is true and of clinical and/or practical significance. Consideration of power in designing NHST studies prevents the waste of time, resources, and sometimes reputations, that accompany failed studies, those that neither support nor clearly refute the theory being tested, leaving the state of knowledge where it was before the study was done.</jats:p>","is_dataset_classified":null,"base_score":0.0,"endowment":0.0,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"20725694","pmcid":null,"openalex_id":"https://openalex.org/W4256120484","authors":[],"funders":[],"total_grants":0,"fwci":null,"citation_percentile":null,"influential_citations":0,"citation_trend":[],"oa_status":"closed","license":"http://doi.wiley.com/10.1002/tdm_license_1.1","oa_locations":[{"url":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/9781118625392.wbecp194","host_type":"publisher"},{"url":"https://doi.org/10.1002/9781118625392.wbecp194","host_type":"journal"}],"fields_of_study":["Meta-analysis and systematic reviews","Statistical Methods in Clinical Trials","Health Systems, Economic Evaluations, Quality of Life"],"mesh_terms":[],"keywords":["Null hypothesis","Null (SQL)","Statistical power","Alternative hypothesis","Statistical hypothesis testing","Statistical significance","Econometrics","Power (physics)","Computer science","Statistics","Psychology","Mathematics","Data mining","Physics"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-07-26T14:41:07.707884Z","pmid":null,"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":[]}