Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2091151537', 'doi': 'https://doi.org/10.1007/s004020050296', 'title': 'Multiple regression analysis of the factors influencing the results of expansive open-door laminoplasty for cervical myelopathy due to ossification of the posterior longitudinal ligament', 'display_name': 'Multiple regression analysis of the factors influencing the results of expansive open-door laminoplasty for cervical myelopathy due to ossification of the posterior longitudinal ligament', 'publication_year': 1998, 'publication_date': '1998-10-01', 'ids': {'openalex': 'https://openalex.org/W2091151537', 'doi': 'https://doi.org/10.1007/s004020050296', 'mag': '2091151537', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/9801785'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1007/s004020050296', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S118785805', 'display_name': 'Archives of Orthopaedic and Trauma Surgery', 'issn_l': '0936-8051', 'issn': ['0936-8051', '1434-3916'], '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/P4310319965', 'https://openalex.org/P4310319900'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Science+Business Media'], '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/A5054254614', 'display_name': 'Yuki Fujimura', 'orcid': 'https://orcid.org/0000-0002-7225-8452'}, 'institutions': [{'id': 'https://openalex.org/I4210107168', 'display_name': 'Keio University Hospital', 'ror': 'https://ror.org/01k8ej563', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210107168']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'Y. Fujimura', 'raw_affiliation_strings': ['Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan, , JP'], 'affiliations': [{'raw_affiliation_string': 'Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan, , JP', 'institution_ids': ['https://openalex.org/I4210107168']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5009928321', 'display_name': 'Yukimi Nishi', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210107168', 'display_name': 'Keio University Hospital', 'ror': 'https://ror.org/01k8ej563', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210107168']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'Y. Nishi', 'raw_affiliation_strings': ['Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan, , JP'], 'affiliations': [{'raw_affiliation_string': 'Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan, , JP', 'institution_ids': ['https://openalex.org/I4210107168']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5062376392', 'display_name': 'Kazuhiro Chiba', 'orcid': 'https://orcid.org/0000-0002-4078-5258'}, 'institutions': [{'id': 'https://openalex.org/I4210107168', 'display_name': 'Keio University Hospital', 'ror': 'https://ror.org/01k8ej563', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210107168']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'K. Chiba', 'raw_affiliation_strings': ['Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan, , JP'], 'affiliations': [{'raw_affiliation_string': 'Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan, , JP', 'institution_ids': ['https://openalex.org/I4210107168']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5024414432', 'display_name': 'Masaya Nakamura', 'orcid': 'https://orcid.org/0000-0002-2279-7028'}, 'institutions': [{'id': 'https://openalex.org/I4210107168', 'display_name': 'Keio University Hospital', 'ror': 'https://ror.org/01k8ej563', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210107168']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'M. Nakamura', 'raw_affiliation_strings': ['Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan, , JP'], 'affiliations': [{'raw_affiliation_string': 'Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan, , JP', 'institution_ids': ['https://openalex.org/I4210107168']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5086679640', 'display_name': 'Kiyoshi Hirabayashi', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210107168', 'display_name': 'Keio University Hospital', 'ror': 'https://ror.org/01k8ej563', 'country_code': 'JP', 'type': 'healthcare', 'lineage': ['https://openalex.org/I4210107168']}], 'countries': ['JP'], 'is_corresponding': False, 'raw_author_name': 'K. Hirabayashi', 'raw_affiliation_strings': ['Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan, , JP'], 'affiliations': [{'raw_affiliation_string': 'Department of Orthopaedic Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160, Japan, , JP', 'institution_ids': ['https://openalex.org/I4210107168']}]}], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 3190, 'currency': 'EUR', 'value_usd': 4190, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 0.799, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 37, 'citation_normalized_percentile': {'value': 0.861542, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 89, 'max': 90}, 'biblio': {'volume': '117', 'issue': '8', 'first_page': '471', 'last_page': '474'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11518', 'display_name': 'Surgical Interventions for Cervical Spine Disorders', 'score': 0.9996, 'subfield': {'id': 'https://openalex.org/subfields/2746', 'display_name': 'Surgery'}, '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/T11518', 'display_name': 'Surgical Interventions for Cervical Spine Disorders', 'score': 0.9996, 'subfield': {'id': 'https://openalex.org/subfields/2746', 'display_name': 'Surgery'}, '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/T10238', 'display_name': 'Pathophysiology of Lumbar Disc Degeneration and Treatment', 'score': 0.9667, 'subfield': {'id': 'https://openalex.org/subfields/2734', 'display_name': 'Pathology and Forensic Medicine'}, '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/T13323', 'display_name': 'Spinal Hematomas and Related Conditions', 'score': 0.9381, 'subfield': {'id': 'https://openalex.org/subfields/2746', 'display_name': 'Surgery'}, '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/laminoplasty', 'display_name': 'Laminoplasty', 'score': 0.9598372}, {'id': 'https://openalex.org/keywords/expansive', 'display_name': 'Expansive', 'score': 0.7587996}, {'id': 'https://openalex.org/keywords/posterior-longitudinal-ligament', 'display_name': 'Posterior longitudinal ligament', 'score': 0.64342093}, {'id': 'https://openalex.org/keywords/ossification-of-posterior-longitudinal-ligament', 'display_name': 'Ossification of Posterior Longitudinal Ligament', 'score': 0.539938}, {'id': 'https://openalex.org/keywords/myelopathy', 'display_name': 'Myelopathy', 'score': 0.535748}], 'concepts': [{'id': 'https://openalex.org/C2778284751', 'wikidata': 'https://www.wikidata.org/wiki/Q6482010', 'display_name': 'Laminoplasty', 'level': 4, 'score': 0.9598372}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.9544643}, {'id': 'https://openalex.org/C2779492255', 'wikidata': 'https://www.wikidata.org/wiki/Q11488367', 'display_name': 'Ossification of the posterior longitudinal ligament', 'level': 4, 'score': 0.8610748}, {'id': 'https://openalex.org/C2777604421', 'wikidata': 'https://www.wikidata.org/wiki/Q2303951', 'display_name': 'Myelopathy', 'level': 3, 'score': 0.79177487}, {'id': 'https://openalex.org/C2780502288', 'wikidata': 'https://www.wikidata.org/wiki/Q28838156', 'display_name': 'Expansive', 'level': 3, 'score': 0.7587996}, {'id': 'https://openalex.org/C68312169', 'wikidata': 'https://www.wikidata.org/wiki/Q216685', 'display_name': 'Orthopedic surgery', 'level': 2, 'score': 0.6904339}, {'id': 'https://openalex.org/C2776667541', 'wikidata': 'https://www.wikidata.org/wiki/Q1824647', 'display_name': 'Posterior longitudinal ligament', 'level': 3, 'score': 0.64342093}, {'id': 'https://openalex.org/C2778842504', 'wikidata': 'https://www.wikidata.org/wiki/Q1121544', 'display_name': 'Ossification', 'level': 2, 'score': 0.6155436}, {'id': 'https://openalex.org/C141071460', 'wikidata': 'https://www.wikidata.org/wiki/Q40821', 'display_name': 'Surgery', 'level': 1, 'score': 0.5554444}, {'id': 'https://openalex.org/C2779753412', 'wikidata': 'https://www.wikidata.org/wiki/Q39888', 'display_name': 'Ligament', 'level': 2, 'score': 0.4410513}, {'id': 'https://openalex.org/C2779326565', 'wikidata': 'https://www.wikidata.org/wiki/Q781983', 'display_name': 'Spinal canal', 'level': 3, 'score': 0.4172912}, {'id': 'https://openalex.org/C2780775167', 'wikidata': 'https://www.wikidata.org/wiki/Q9606', 'display_name': 'Spinal cord', 'level': 2, 'score': 0.23584148}, {'id': 'https://openalex.org/C30407753', 'wikidata': 'https://www.wikidata.org/wiki/Q186191', 'display_name': 'Compressive strength', 'level': 2, 'score': 0.0}, {'id': 'https://openalex.org/C192562407', 'wikidata': 'https://www.wikidata.org/wiki/Q228736', 'display_name': 'Materials science', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C118552586', 'wikidata': 'https://www.wikidata.org/wiki/Q7867', 'display_name': 'Psychiatry', 'level': 1, 'score': 0.0}, {'id': 'https://openalex.org/C159985019', 'wikidata': 'https://www.wikidata.org/wiki/Q181790', 'display_name': 'Composite material', 'level': 1, 'score': 0.0}], 'mesh': [{'descriptor_ui': 'D017887', 'descriptor_name': 'Ossification of Posterior Longitudinal Ligament', 'qualifier_ui': 'Q000150', 'qualifier_name': 'complications', 'is_major_topic': True}, {'descriptor_ui': 'D013118', 'descriptor_name': 'Spinal Cord Diseases', 'qualifier_ui': 'Q000601', 'qualifier_name': 'surgery', 'is_major_topic': True}, {'descriptor_ui': 'D000328', 'descriptor_name': 'Adult', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D000368', 'descriptor_name': 'Aged', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D018450', 'descriptor_name': 'Disease Progression', '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': 'D008875', 'descriptor_name': 'Middle Aged', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D017887', 'descriptor_name': 'Ossification of Posterior Longitudinal Ligament', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D017887', 'descriptor_name': 'Ossification of Posterior Longitudinal Ligament', 'qualifier_ui': 'Q000000981', 'qualifier_name': 'diagnostic imaging', 'is_major_topic': False}, {'descriptor_ui': 'D011859', 'descriptor_name': 'Radiography', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012044', 'descriptor_name': 'Regression Analysis', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D013118', 'descriptor_name': 'Spinal Cord Diseases', 'qualifier_ui': 'Q000209', 'qualifier_name': 'etiology', 'is_major_topic': False}, {'descriptor_ui': 'D013118', 'descriptor_name': 'Spinal Cord Diseases', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D016896', 'descriptor_name': 'Treatment Outcome', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1007/s004020050296', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S118785805', 'display_name': 'Archives of Orthopaedic and Trauma Surgery', 'issn_l': '0936-8051', 'issn': ['0936-8051', '1434-3916'], '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/P4310319965', 'https://openalex.org/P4310319900'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Science+Business Media'], '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/9801785', '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/1', 'display_name': 'No poverty', 'score': 0.47}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 4, 'referenced_works': ['https://openalex.org/W1991291313', 'https://openalex.org/W2015762089', 'https://openalex.org/W2031623537', 'https://openalex.org/W2051545428'], 'related_works': ['https://openalex.org/W4319826321', 'https://openalex.org/W4256508823', 'https://openalex.org/W3029916495', 'https://openalex.org/W2481548708', 'https://openalex.org/W2408344580', 'https://openalex.org/W2365746633', 'https://openalex.org/W2343852523', 'https://openalex.org/W2297887306', 'https://openalex.org/W2091151537', 'https://openalex.org/W1974112920'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2091151537', 'counts_by_year': [{'year': 2023, 'cited_by_count': 1}, {'year': 2018, 'cited_by_count': 1}, {'year': 2017, 'cited_by_count': 2}, {'year': 2015, 'cited_by_count': 3}, {'year': 2014, 'cited_by_count': 3}, {'year': 2013, 'cited_by_count': 4}, {'year': 2012, 'cited_by_count': 1}], 'updated_date': '2024-09-13T04:17:49.830643', 'created_date': '2016-06-24'}