{"id":"https://openalex.org/W2025121866","doi":"https://doi.org/10.1007/s10916-010-9538-4","title":"Analysis of Factors Causing Long Patient Waiting Time and Clinic Overtime in Outpatient Clinics","display_name":"Analysis of Factors Causing Long Patient Waiting Time and Clinic Overtime in Outpatient Clinics","publication_year":2010,"publication_date":"2010-08-04","ids":{"openalex":"https://openalex.org/W2025121866","doi":"https://doi.org/10.1007/s10916-010-9538-4","mag":"2025121866","pmid":"https://pubmed.ncbi.nlm.nih.gov/20703659"},"language":"en","primary_location":{"id":"doi:10.1007/s10916-010-9538-4","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s10916-010-9538-4","pdf_url":null,"source":{"id":"https://openalex.org/S37151855","display_name":"Journal of Medical Systems","issn_l":"0148-5598","issn":["0148-5598","1573-689X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Medical Systems","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5103625731","display_name":"Zhecheng Zhu","orcid":null},"institutions":[{"id":"https://openalex.org/I4210150261","display_name":"National University Health System","ror":"https://ror.org/05tjjsh18","country_code":"SG","type":"education","lineage":["https://openalex.org/I4210150261"]}],"countries":["SG"],"is_corresponding":true,"raw_author_name":"Zhecheng Zhu","raw_affiliation_strings":["National Healthcare Group, Singapore, Singapore. zhecheng_zhu@nhg.com.sg","National Healthcare Group Singapore Singapore"],"affiliations":[{"raw_affiliation_string":"National Healthcare Group, Singapore, Singapore. zhecheng_zhu@nhg.com.sg","institution_ids":["https://openalex.org/I4210150261"]},{"raw_affiliation_string":"National Healthcare Group Singapore Singapore","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110670654","display_name":"Bee Hoon Heng","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Bee Hoon Heng","raw_affiliation_strings":["National Healthcare Group, Singapore, Singapore","National Healthcare Group Singapore Singapore"],"affiliations":[{"raw_affiliation_string":"National Healthcare Group, Singapore, Singapore","institution_ids":[]},{"raw_affiliation_string":"National Healthcare Group Singapore Singapore","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5036511861","display_name":"Kiok Liang Teow","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Kiok Liang Teow","raw_affiliation_strings":["National Healthcare Group, Singapore, Singapore","National Healthcare Group Singapore Singapore"],"affiliations":[{"raw_affiliation_string":"National Healthcare Group, Singapore, Singapore","institution_ids":[]},{"raw_affiliation_string":"National Healthcare Group Singapore Singapore","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5103625731"],"corresponding_institution_ids":["https://openalex.org/I4210150261"],"apc_list":{"value":3390,"currency":"EUR","value_usd":4390},"apc_paid":null,"fwci":5.4301,"has_fulltext":false,"cited_by_count":72,"citation_normalized_percentile":{"value":0.95425855,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":"36","issue":"2","first_page":"707","last_page":"713"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11773","display_name":"Healthcare Operations and Scheduling Optimization","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/3604","display_name":"Emergency Medical Services"},"field":{"id":"https://openalex.org/fields/36","display_name":"Health Professions"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T11773","display_name":"Healthcare Operations and Scheduling Optimization","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/3604","display_name":"Emergency Medical Services"},"field":{"id":"https://openalex.org/fields/36","display_name":"Health Professions"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10391","display_name":"Healthcare Policy and Management","score":0.9799000024795532,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12174","display_name":"Hospital Admissions and Outcomes","score":0.9538999795913696,"subfield":{"id":"https://openalex.org/subfields/2711","display_name":"Emergency Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/overtime","display_name":"Overtime","score":0.9487980604171753},{"id":"https://openalex.org/keywords/outpatient-clinic","display_name":"Outpatient clinic","score":0.7025898098945618},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.6905470490455627},{"id":"https://openalex.org/keywords/discrete-event-simulation","display_name":"Discrete event simulation","score":0.5677968859672546},{"id":"https://openalex.org/keywords/medical-emergency","display_name":"Medical emergency","score":0.5195049047470093},{"id":"https://openalex.org/keywords/government","display_name":"Government (linguistics)","score":0.48090028762817383},{"id":"https://openalex.org/keywords/health-informatics","display_name":"Health informatics","score":0.4404789209365845},{"id":"https://openalex.org/keywords/nursing","display_name":"Nursing","score":0.284267783164978},{"id":"https://openalex.org/keywords/simulation","display_name":"Simulation","score":0.18561339378356934},{"id":"https://openalex.org/keywords/public-health","display_name":"Public health","score":0.15410193800926208},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.1520252227783203}],"concepts":[{"id":"https://openalex.org/C2780407378","wikidata":"https://www.wikidata.org/wiki/Q667022","display_name":"Overtime","level":2,"score":0.9487980604171753},{"id":"https://openalex.org/C3020110884","wikidata":"https://www.wikidata.org/wiki/Q695416","display_name":"Outpatient clinic","level":2,"score":0.7025898098945618},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.6905470490455627},{"id":"https://openalex.org/C147203929","wikidata":"https://www.wikidata.org/wiki/Q574814","display_name":"Discrete event simulation","level":2,"score":0.5677968859672546},{"id":"https://openalex.org/C545542383","wikidata":"https://www.wikidata.org/wiki/Q2751242","display_name":"Medical emergency","level":1,"score":0.5195049047470093},{"id":"https://openalex.org/C2778137410","wikidata":"https://www.wikidata.org/wiki/Q2732820","display_name":"Government (linguistics)","level":2,"score":0.48090028762817383},{"id":"https://openalex.org/C145642194","wikidata":"https://www.wikidata.org/wiki/Q870895","display_name":"Health informatics","level":3,"score":0.4404789209365845},{"id":"https://openalex.org/C159110408","wikidata":"https://www.wikidata.org/wiki/Q121176","display_name":"Nursing","level":1,"score":0.284267783164978},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.18561339378356934},{"id":"https://openalex.org/C138816342","wikidata":"https://www.wikidata.org/wiki/Q189603","display_name":"Public health","level":2,"score":0.15410193800926208},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.1520252227783203},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000554","descriptor_name":"Ambulatory Care Facilities","qualifier_ui":"Q000458","qualifier_name":"organization & administration","is_major_topic":false},{"descriptor_ui":"D000554","descriptor_name":"Ambulatory Care Facilities","qualifier_ui":"Q000458","qualifier_name":"organization & administration","is_major_topic":false},{"descriptor_ui":"D000554","descriptor_name":"Ambulatory Care Facilities","qualifier_ui":"Q000458","qualifier_name":"organization & administration","is_major_topic":false},{"descriptor_ui":"D000554","descriptor_name":"Ambulatory Care Facilities","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":false},{"descriptor_ui":"D000554","descriptor_name":"Ambulatory Care Facilities","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":false},{"descriptor_ui":"D000554","descriptor_name":"Ambulatory Care Facilities","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":false},{"descriptor_ui":"D001071","descriptor_name":"Appointments and Schedules","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001071","descriptor_name":"Appointments and Schedules","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001071","descriptor_name":"Appointments and Schedules","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D003198","descriptor_name":"Computer Simulation","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D003198","descriptor_name":"Computer Simulation","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D003198","descriptor_name":"Computer Simulation","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D010044","descriptor_name":"Outpatient Clinics, Hospital","qualifier_ui":"Q000458","qualifier_name":"organization & administration","is_major_topic":false},{"descriptor_ui":"D010044","descriptor_name":"Outpatient Clinics, Hospital","qualifier_ui":"Q000458","qualifier_name":"organization & administration","is_major_topic":false},{"descriptor_ui":"D010044","descriptor_name":"Outpatient Clinics, Hospital","qualifier_ui":"Q000458","qualifier_name":"organization & administration","is_major_topic":false},{"descriptor_ui":"D010044","descriptor_name":"Outpatient Clinics, Hospital","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":false},{"descriptor_ui":"D010044","descriptor_name":"Outpatient Clinics, Hospital","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":false},{"descriptor_ui":"D010044","descriptor_name":"Outpatient Clinics, Hospital","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":false},{"descriptor_ui":"D010561","descriptor_name":"Personnel Staffing and Scheduling","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D010561","descriptor_name":"Personnel Staffing and Scheduling","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D010561","descriptor_name":"Personnel Staffing and Scheduling","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012846","descriptor_name":"Singapore","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012846","descriptor_name":"Singapore","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012846","descriptor_name":"Singapore","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013997","descriptor_name":"Time Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013997","descriptor_name":"Time Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013997","descriptor_name":"Time Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D014850","descriptor_name":"Waiting Lists","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D014850","descriptor_name":"Waiting Lists","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D014850","descriptor_name":"Waiting Lists","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D016526","descriptor_name":"Workload","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016526","descriptor_name":"Workload","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016526","descriptor_name":"Workload","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D017598","descriptor_name":"Efficiency, Organizational","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D017598","descriptor_name":"Efficiency, Organizational","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D017598","descriptor_name":"Efficiency, Organizational","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D057188","descriptor_name":"Workflow","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D057188","descriptor_name":"Workflow","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D057188","descriptor_name":"Workflow","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"doi:10.1007/s10916-010-9538-4","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s10916-010-9538-4","pdf_url":null,"source":{"id":"https://openalex.org/S37151855","display_name":"Journal of Medical Systems","issn_l":"0148-5598","issn":["0148-5598","1573-689X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Medical Systems","raw_type":"journal-article"},{"id":"pmid:20703659","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/20703659","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of medical systems","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W48589172","https://openalex.org/W1965526363","https://openalex.org/W1968958144","https://openalex.org/W1969230290","https://openalex.org/W1987029515","https://openalex.org/W1989970526","https://openalex.org/W1999539123","https://openalex.org/W2000294740","https://openalex.org/W2007261666","https://openalex.org/W2031545685","https://openalex.org/W2057733989","https://openalex.org/W2062794184","https://openalex.org/W2085974121","https://openalex.org/W2087663824","https://openalex.org/W2094344546","https://openalex.org/W2796915545","https://openalex.org/W2904285679"],"related_works":["https://openalex.org/W3124149305","https://openalex.org/W2128854221","https://openalex.org/W2494554749","https://openalex.org/W4235406906","https://openalex.org/W2912990475","https://openalex.org/W2094899220","https://openalex.org/W2074267527","https://openalex.org/W2098958797","https://openalex.org/W1608563805","https://openalex.org/W2025121866"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":7},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":9},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":6},{"year":2018,"cited_by_count":5},{"year":2017,"cited_by_count":10},{"year":2016,"cited_by_count":7},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":4},{"year":2013,"cited_by_count":7}],"updated_date":"2026-03-29T08:15:47.926485","created_date":"2025-10-10T00:00:00"}