{"id":"https://openalex.org/W2292606765","doi":null,"title":"Estrogen profiles of primiparous and nulliparous women in Athens, Greece.","display_name":"Estrogen profiles of primiparous and nulliparous women in Athens, Greece.","publication_year":1980,"publication_date":"1980-07-01","ids":{"openalex":"https://openalex.org/W2292606765","mag":"2292606765","pmid":"https://pubmed.ncbi.nlm.nih.gov/6930516"},"language":"en","primary_location":{"id":"pmid:6930516","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/6930516","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,"listed_in":[],"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 the National Cancer Institute","raw_type":"Comparative Study"},"volume":null,"type":"article","indexed_in":["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/A5107310492","display_name":"Dimitrios Trichopoulos","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"D Trichopoulos","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005043723","display_name":"Philip T. Cole","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"P Cole","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":null,"display_name":"J B Brown","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"J B Brown","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060732303","display_name":"MARLENE B. GOLDMAN","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"M B Goldman","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5113524921","display_name":"Brian MacMahon","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"B MacMahon","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.5881,"has_fulltext":false,"cited_by_count":39,"citation_normalized_percentile":{"value":0.84312896,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"65","issue":"1","first_page":"43","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10756","display_name":"Estrogen and related hormone effects","score":0.8798999786376953,"subfield":{"id":"https://openalex.org/subfields/1311","display_name":"Genetics"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T10756","display_name":"Estrogen and related hormone effects","score":0.8798999786376953,"subfield":{"id":"https://openalex.org/subfields/1311","display_name":"Genetics"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12103","display_name":"Cancer Risks and Factors","score":0.08860000222921371,"subfield":{"id":"https://openalex.org/subfields/2730","display_name":"Oncology"},"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/T10694","display_name":"Menopause: Health Impacts and Treatments","score":0.009399999864399433,"subfield":{"id":"https://openalex.org/subfields/2712","display_name":"Endocrinology, Diabetes and Metabolism"},"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/urinary-estrogens","display_name":"urinary estrogens","score":0.8949999809265137},{"id":"https://openalex.org/keywords/estriol","display_name":"estriol","score":0.7170000076293945},{"id":"https://openalex.org/keywords/estrone","display_name":"estrone","score":0.8619999885559082},{"id":"https://openalex.org/keywords/estradiol","display_name":"estradiol","score":0.9940000176429749},{"id":"https://openalex.org/keywords/pregnanediol","display_name":"pregnanediol","score":0.8889999985694885},{"id":"https://openalex.org/keywords/primiparous-women","display_name":"primiparous women","score":0.9100000262260437},{"id":"https://openalex.org/keywords/nulliparous-women","display_name":"nulliparous women","score":0.9990000128746033},{"id":"https://openalex.org/keywords/parity","display_name":"parity","score":0.6320000290870667},{"id":"https://openalex.org/keywords/age-at-first-pregnancy","display_name":"age at first pregnancy","score":0.5559999942779541},{"id":"https://openalex.org/keywords/luteal-phase","display_name":"luteal phase","score":0.8130000233650208},{"id":"https://openalex.org/keywords/follicular-phase","display_name":"follicular phase","score":0.8939999938011169},{"id":"https://openalex.org/keywords/menstrual-cycle","display_name":"menstrual cycle","score":0.8019999861717224},{"id":"https://openalex.org/keywords/anovulation","display_name":"anovulation","score":0.6890000104904175},{"id":"https://openalex.org/keywords/pregnancy","display_name":"pregnancy","score":0.4320000112056732},{"id":"https://openalex.org/keywords/estrogen-metabolism","display_name":"estrogen metabolism","score":0.7319999933242798},{"id":"https://openalex.org/keywords/postpartum-women","display_name":"postpartum women","score":0.6660000085830688}],"concepts":[{"id":"https://openalex.org/C2777335581","wikidata":"https://www.wikidata.org/wiki/Q409721","display_name":"Estriol","level":3,"score":0.8646289110183716},{"id":"https://openalex.org/C2776250704","wikidata":"https://www.wikidata.org/wiki/Q906054","display_name":"Pregnanediol","level":3,"score":0.7837818264961243},{"id":"https://openalex.org/C2779234561","wikidata":"https://www.wikidata.org/wiki/Q11995","display_name":"Pregnancy","level":2,"score":0.7437626123428345},{"id":"https://openalex.org/C143228043","wikidata":"https://www.wikidata.org/wiki/Q2363481","display_name":"Luteal phase","level":3,"score":0.7256647348403931},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.6732053160667419},{"id":"https://openalex.org/C2778656385","wikidata":"https://www.wikidata.org/wiki/Q414986","display_name":"Estrone","level":3,"score":0.638379693031311},{"id":"https://openalex.org/C2777164284","wikidata":"https://www.wikidata.org/wiki/Q277954","display_name":"Estrogen","level":2,"score":0.637516438961029},{"id":"https://openalex.org/C2779058012","wikidata":"https://www.wikidata.org/wiki/Q83864","display_name":"Menstrual cycle","level":3,"score":0.5751040577888489},{"id":"https://openalex.org/C187785154","wikidata":"https://www.wikidata.org/wiki/Q5464664","display_name":"Follicular phase","level":2,"score":0.5496259927749634},{"id":"https://openalex.org/C131872663","wikidata":"https://www.wikidata.org/wiki/Q5284418","display_name":"Obstetrics","level":1,"score":0.5138385891914368},{"id":"https://openalex.org/C29456083","wikidata":"https://www.wikidata.org/wiki/Q1221899","display_name":"Gynecology","level":1,"score":0.49289989471435547},{"id":"https://openalex.org/C2780026642","wikidata":"https://www.wikidata.org/wiki/Q40924","display_name":"Urine","level":2,"score":0.44485655426979065},{"id":"https://openalex.org/C42407357","wikidata":"https://www.wikidata.org/wiki/Q521","display_name":"Physiology","level":1,"score":0.3603786826133728},{"id":"https://openalex.org/C134018914","wikidata":"https://www.wikidata.org/wiki/Q162606","display_name":"Endocrinology","level":1,"score":0.3130502998828888},{"id":"https://openalex.org/C71315377","wikidata":"https://www.wikidata.org/wiki/Q11364","display_name":"Hormone","level":2,"score":0.1948060393333435},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.10433503985404968},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000293","descriptor_name":"Adolescent","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001900","descriptor_name":"Boston","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001943","descriptor_name":"Breast Neoplasms","qualifier_ui":"Q000378","qualifier_name":"metabolism","is_major_topic":false},{"descriptor_ui":"D004967","descriptor_name":"Estrogens","qualifier_ui":"Q000652","qualifier_name":"urine","is_major_topic":true},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006115","descriptor_name":"Greece","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":"D008598","descriptor_name":"Menstruation","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D010298","descriptor_name":"Parity","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D011276","descriptor_name":"Pregnanediol","qualifier_ui":"Q000652","qualifier_name":"urine","is_major_topic":false},{"descriptor_ui":"D013997","descriptor_name":"Time Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"pmid:6930516","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/6930516","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,"listed_in":[],"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 the National Cancer Institute","raw_type":"Comparative Study"},{"id":"mag:2292606765","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/6930516","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,"listed_in":[],"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":null,"is_accepted":false,"is_published":false,"raw_source_name":"PubMed","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being","score":0.98580002784729}],"study_designs":[{"id":"https://openalex.org/study-designs/observational-study","display_name":"Observational Study"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W4302596698","https://openalex.org/W1996668539","https://openalex.org/W2126985854","https://openalex.org/W7096477984","https://openalex.org/W2090455307","https://openalex.org/W1945987462","https://openalex.org/W2043140831","https://openalex.org/W2070564874","https://openalex.org/W2067412388","https://openalex.org/W1591289800"],"abstract_inverted_index":{"Urine":[0],"estrogens":[1],"of":[2,10,26,33,36,51,57,72,103,128,131,135,160,176,190],"144":[3],"primiparous":[4,46,105],"women":[5,9,47,56,106],"and":[6,38,84],"122":[7],"nulliparous":[8,55,144],"similar":[11],"age":[12,52,167],"were":[13,17,139,148],"measured.":[14],"The":[15,24,61,99,146],"primiparae":[16],"at":[18,115,164],"least":[19,116],"6":[20],"months":[21],"post":[22],"pregnancy.":[23],"ratio":[25],"the":[27,31,34,58,69,73,81,96,104,122,143,151,154,174,181,188],"estriol":[28,41,101],"concentration":[29],"to":[30,118],"sum":[32],"concentrations":[35],"estrone":[37],"estradiol":[39],"(the":[40],"ratio)":[42],"was":[43,63,85],"higher":[44,133],"among":[45,54],"under":[48],"25":[49],"years":[50],"than":[53,76,90],"same":[59],"age.":[60],"difference":[62],"greater":[64],"in":[65,68,77,80,95,142,173,187],"specimens":[66],"collected":[67,79],"luteal":[70,97],"phase":[71,83],"menstrual":[74,137],"cycle":[75],"those":[78],"follicular":[82],"statistically":[86],"significant":[87],"(P":[88],"less":[89],"0.05,":[91],"one-tailed":[92],"t-test)":[93],"only":[94],"phase.":[98],"high":[100],"ratios":[102],"did":[107],"not":[108],"decline":[109],"with":[110,150],"increasing":[111],"interval":[112],"after":[113],"pregnancy,":[114],"up":[117],"24":[119],"months.":[120],"Among":[121],"younger":[123],"women,":[124],"significantly":[125],"lower":[126],"levels":[127],"pregnanediol,":[129],"suggestive":[130],"a":[132,161,171,185],"frequency":[134,189],"anovular":[136],"cycles,":[138],"also":[140],"seen":[141],"women.":[145],"findings":[147],"consistent":[149],"hypothesis":[152],"that":[153],"protective":[155],"effect":[156],"against":[157],"breast":[158],"cancer":[159],"full-term":[162],"pregnancy":[163,182],"an":[165],"early":[166],"operates":[168],"either":[169],"through":[170,184],"change":[172,186],"pattern":[175],"estrogen":[177],"metabolism":[178],"induced":[179],"by":[180],"or":[183],"ovular":[191],"cycles.":[192]},"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}
