Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2131443899', 'doi': 'https://doi.org/10.1016/j.parkreldis.2007.07.015', 'title': "Validation of the Unified Parkinson's Disease Rating Scale (UPDRS) section I as a screening and diagnostic instrument for apathy in patients with Parkinson's disease", 'display_name': "Validation of the Unified Parkinson's Disease Rating Scale (UPDRS) section I as a screening and diagnostic instrument for apathy in patients with Parkinson's disease", 'publication_year': 2007, 'publication_date': '2007-10-02', 'ids': {'openalex': 'https://openalex.org/W2131443899', 'doi': 'https://doi.org/10.1016/j.parkreldis.2007.07.015', 'mag': '2131443899', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/17889589'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/j.parkreldis.2007.07.015', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S147691530', 'display_name': 'Parkinsonism & Related Disorders', 'issn_l': '1353-8020', 'issn': ['1353-8020', '1873-5126'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5069075840', 'display_name': 'Kenn Freddy Pedersen', 'orcid': 'https://orcid.org/0000-0003-0935-4211'}, 'institutions': [{'id': 'https://openalex.org/I2800132241', 'display_name': 'Stavanger University Hospital', 'ror': 'https://ror.org/04zn72g03', 'country_code': 'NO', 'type': 'healthcare', 'lineage': ['https://openalex.org/I2800132241']}], 'countries': ['NO'], 'is_corresponding': True, 'raw_author_name': 'Kenn Freddy Pedersen', 'raw_affiliation_strings': ['Department of Neurology, Stavanger University Hospital, P.O. Box 8100, N-4068 Stavanger, Norway', 'The Norwegian Centre for Movement Disorders, Stavanger, Norway'], 'affiliations': [{'raw_affiliation_string': 'Department of Neurology, Stavanger University Hospital, P.O. Box 8100, N-4068 Stavanger, Norway', 'institution_ids': ['https://openalex.org/I2800132241']}, {'raw_affiliation_string': 'The Norwegian Centre for Movement Disorders, Stavanger, Norway', 'institution_ids': []}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5103723297', 'display_name': 'Jan Petter Larsen', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I2800132241', 'display_name': 'Stavanger University Hospital', 'ror': 'https://ror.org/04zn72g03', 'country_code': 'NO', 'type': 'healthcare', 'lineage': ['https://openalex.org/I2800132241']}], 'countries': ['NO'], 'is_corresponding': False, 'raw_author_name': 'Jan Petter Larsen', 'raw_affiliation_strings': ['Department of Neurology, Stavanger University Hospital, P.O. Box 8100, N-4068 Stavanger, Norway', 'The Norwegian Centre for Movement Disorders, Stavanger, Norway'], 'affiliations': [{'raw_affiliation_string': 'The Norwegian Centre for Movement Disorders, Stavanger, Norway', 'institution_ids': []}, {'raw_affiliation_string': 'Department of Neurology, Stavanger University Hospital, P.O. Box 8100, N-4068 Stavanger, Norway', 'institution_ids': ['https://openalex.org/I2800132241']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5051934606', 'display_name': 'Dag Aarsland', 'orcid': 'https://orcid.org/0000-0001-6314-216X'}, 'institutions': [{'id': 'https://openalex.org/I2800132241', 'display_name': 'Stavanger University Hospital', 'ror': 'https://ror.org/04zn72g03', 'country_code': 'NO', 'type': 'healthcare', 'lineage': ['https://openalex.org/I2800132241']}], 'countries': ['NO'], 'is_corresponding': False, 'raw_author_name': 'Dag Aarsland', 'raw_affiliation_strings': ['Psychiatric Clinic, Stavanger University Hospital, P.O. Box 8100, N-4068 Stavanger, Norway', 'The Norwegian Centre for Movement Disorders, Stavanger, Norway'], 'affiliations': [{'raw_affiliation_string': 'Psychiatric Clinic, Stavanger University Hospital, P.O. Box 8100, N-4068 Stavanger, Norway', 'institution_ids': ['https://openalex.org/I2800132241']}, {'raw_affiliation_string': 'The Norwegian Centre for Movement Disorders, Stavanger, Norway', 'institution_ids': []}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': ['https://openalex.org/A5069075840'], 'corresponding_institution_ids': ['https://openalex.org/I2800132241'], 'apc_list': {'value': 3490, 'currency': 'USD', 'value_usd': 3490, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 2.319, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 40, 'citation_normalized_percentile': {'value': 0.917097, 'is_in_top_1_percent': False, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 92, 'max': 93}, 'biblio': {'volume': '14', 'issue': '3', 'first_page': '183', 'last_page': '186'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10085', 'display_name': "Parkinson's Disease Mechanisms and Treatments", 'score': 0.9999, 'subfield': {'id': 'https://openalex.org/subfields/2728', 'display_name': 'Neurology'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, 'topics': [{'id': 'https://openalex.org/T10085', 'display_name': "Parkinson's Disease Mechanisms and Treatments", 'score': 0.9999, 'subfield': {'id': 'https://openalex.org/subfields/2728', 'display_name': 'Neurology'}, 'field': {'id': 'https://openalex.org/fields/27', 'display_name': 'Medicine'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, {'id': 'https://openalex.org/T10106', 'display_name': 'Autism Spectrum Disorder Research', 'score': 0.941, 'subfield': {'id': 'https://openalex.org/subfields/2805', 'display_name': 'Cognitive Neuroscience'}, 'field': {'id': 'https://openalex.org/fields/28', 'display_name': 'Neuroscience'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, {'id': 'https://openalex.org/T12846', 'display_name': 'Ginkgo biloba and Cashew Applications', 'score': 0.9378, 'subfield': {'id': 'https://openalex.org/subfields/2707', 'display_name': 'Complementary and alternative 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/apathy', 'display_name': 'Apathy', 'score': 0.9920664}, {'id': 'https://openalex.org/keywords/depression', 'display_name': 'Depression', 'score': 0.52113086}], 'concepts': [{'id': 'https://openalex.org/C2776509080', 'wikidata': 'https://www.wikidata.org/wiki/Q309406', 'display_name': 'Apathy', 'level': 3, 'score': 0.9920664}, {'id': 'https://openalex.org/C83849319', 'wikidata': 'https://www.wikidata.org/wiki/Q7295720', 'display_name': 'Rating scale', 'level': 2, 'score': 0.7801686}, {'id': 'https://openalex.org/C2779734285', 'wikidata': 'https://www.wikidata.org/wiki/Q11085', 'display_name': "Parkinson's disease", 'level': 3, 'score': 0.7433987}, {'id': 'https://openalex.org/C15744967', 'wikidata': 'https://www.wikidata.org/wiki/Q9418', 'display_name': 'Psychology', 'level': 0, 'score': 0.52803934}, {'id': 'https://openalex.org/C2776867660', 'wikidata': 'https://www.wikidata.org/wiki/Q1814941', 'display_name': 'Depression (economics)', 'level': 2, 'score': 0.52113086}, {'id': 'https://openalex.org/C1862650', 'wikidata': 'https://www.wikidata.org/wiki/Q186005', 'display_name': 'Physical therapy', 'level': 1, 'score': 0.46188563}, {'id': 'https://openalex.org/C2779134260', 'wikidata': 'https://www.wikidata.org/wiki/Q12136', 'display_name': 'Disease', 'level': 2, 'score': 0.4382064}, {'id': 'https://openalex.org/C118552586', 'wikidata': 'https://www.wikidata.org/wiki/Q7867', 'display_name': 'Psychiatry', 'level': 1, 'score': 0.4248484}, {'id': 'https://openalex.org/C171606756', 'wikidata': 'https://www.wikidata.org/wiki/Q506132', 'display_name': 'Psychometrics', 'level': 2, 'score': 0.4100739}, {'id': 'https://openalex.org/C70410870', 'wikidata': 'https://www.wikidata.org/wiki/Q199906', 'display_name': 'Clinical psychology', 'level': 1, 'score': 0.3913646}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.35407683}, {'id': 'https://openalex.org/C99508421', 'wikidata': 'https://www.wikidata.org/wiki/Q2678675', 'display_name': 'Physical medicine and rehabilitation', 'level': 1, 'score': 0.3343135}, {'id': 'https://openalex.org/C169900460', 'wikidata': 'https://www.wikidata.org/wiki/Q2200417', 'display_name': 'Cognition', 'level': 2, 'score': 0.24230525}, {'id': 'https://openalex.org/C126322002', 'wikidata': 'https://www.wikidata.org/wiki/Q11180', 'display_name': 'Internal medicine', 'level': 1, 'score': 0.13803557}, {'id': 'https://openalex.org/C138496976', 'wikidata': 'https://www.wikidata.org/wiki/Q175002', 'display_name': 'Developmental psychology', 'level': 1, 'score': 0.09852007}, {'id': 'https://openalex.org/C162324750', 'wikidata': 'https://www.wikidata.org/wiki/Q8134', 'display_name': 'Economics', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C139719470', 'wikidata': 'https://www.wikidata.org/wiki/Q39680', 'display_name': 'Macroeconomics', 'level': 1, 'score': 0.0}], 'mesh': [{'descriptor_ui': 'D019964', 'descriptor_name': 'Mood Disorders', 'qualifier_ui': 'Q000209', 'qualifier_name': 'etiology', 'is_major_topic': True}, {'descriptor_ui': 'D019964', 'descriptor_name': 'Mood Disorders', 'qualifier_ui': 'Q000175', 'qualifier_name': 'diagnosis', 'is_major_topic': True}, {'descriptor_ui': 'D009042', 'descriptor_name': 'Motivation', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D010300', 'descriptor_name': 'Parkinson Disease', 'qualifier_ui': 'Q000150', 'qualifier_name': 'complications', 'is_major_topic': True}, {'descriptor_ui': 'D010300', 'descriptor_name': 'Parkinson Disease', 'qualifier_ui': 'Q000523', 'qualifier_name': 'psychology', 'is_major_topic': True}, {'descriptor_ui': 'D011569', 'descriptor_name': 'Psychiatric Status Rating Scales', 'qualifier_ui': 'Q000592', 'qualifier_name': 'standards', 'is_major_topic': True}, {'descriptor_ui': 'D000368', 'descriptor_name': 'Aged', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D000369', 'descriptor_name': 'Aged, 80 and over', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005260', 'descriptor_name': 'Female', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D006801', 'descriptor_name': 'Humans', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008297', 'descriptor_name': 'Male', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D019964', 'descriptor_name': 'Mood Disorders', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D009460', 'descriptor_name': 'Neurologic Examination', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D010300', 'descriptor_name': 'Parkinson Disease', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D011569', 'descriptor_name': 'Psychiatric Status Rating Scales', 'qualifier_ui': 'Q000706', 'qualifier_name': 'statistics & numerical data', 'is_major_topic': False}, {'descriptor_ui': 'D011569', 'descriptor_name': 'Psychiatric Status Rating Scales', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012372', 'descriptor_name': 'ROC Curve', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D015203', 'descriptor_name': 'Reproducibility of Results', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012680', 'descriptor_name': 'Sensitivity and Specificity', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/j.parkreldis.2007.07.015', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S147691530', 'display_name': 'Parkinsonism & Related Disorders', 'issn_l': '1353-8020', 'issn': ['1353-8020', '1873-5126'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/17889589', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, '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': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'id': 'https://metadata.un.org/sdg/3', 'display_name': 'Good health and well-being', 'score': 0.51}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 28, 'referenced_works': ['https://openalex.org/W1562359367', 'https://openalex.org/W184160700', 'https://openalex.org/W1847168837', 'https://openalex.org/W1965900135', 'https://openalex.org/W1971347153', 'https://openalex.org/W1982921548', 'https://openalex.org/W1999702935', 'https://openalex.org/W2000206334', 'https://openalex.org/W2009501816', 'https://openalex.org/W2010202486', 'https://openalex.org/W201588874', 'https://openalex.org/W2031743402', 'https://openalex.org/W2058907004', 'https://openalex.org/W2079662917', 'https://openalex.org/W2082402452', 'https://openalex.org/W2096516226', 'https://openalex.org/W2100394620', 'https://openalex.org/W2103315959', 'https://openalex.org/W2105954279', 'https://openalex.org/W2128711456', 'https://openalex.org/W2131823335', 'https://openalex.org/W2153638564', 'https://openalex.org/W2276751657', 'https://openalex.org/W250381883', 'https://openalex.org/W2972597017', 'https://openalex.org/W4249888301', 'https://openalex.org/W4285719527', 'https://openalex.org/W74099017'], 'related_works': ['https://openalex.org/W3088070796', 'https://openalex.org/W2791688487', 'https://openalex.org/W2589856099', 'https://openalex.org/W2376913077', 'https://openalex.org/W2333038458', 'https://openalex.org/W2269265140', 'https://openalex.org/W2151865900', 'https://openalex.org/W2131443899', 'https://openalex.org/W2130604351', 'https://openalex.org/W2019202818'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2131443899', 'counts_by_year': [{'year': 2024, 'cited_by_count': 2}, {'year': 2023, 'cited_by_count': 1}, {'year': 2022, 'cited_by_count': 2}, {'year': 2021, 'cited_by_count': 1}, {'year': 2020, 'cited_by_count': 2}, {'year': 2019, 'cited_by_count': 2}, {'year': 2018, 'cited_by_count': 2}, {'year': 2017, 'cited_by_count': 1}, {'year': 2015, 'cited_by_count': 4}, {'year': 2014, 'cited_by_count': 2}, {'year': 2013, 'cited_by_count': 3}, {'year': 2012, 'cited_by_count': 4}], 'updated_date': '2024-12-16T08:56:53.738739', 'created_date': '2016-06-24'}