{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,4]],"date-time":"2025-10-04T08:03:27Z","timestamp":1759565007866,"version":"3.40.4"},"reference-count":0,"publisher":"S. Karger AG","issue":"3","license":[{"start":{"date-parts":[[2016,7,7]],"date-time":"2016-07-07T00:00:00Z","timestamp":1467849600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2016,7,7]],"date-time":"2016-07-07T00:00:00Z","timestamp":1467849600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Gynecol Obstet Invest"],"published-print":{"date-parts":[[2017]]},"abstract":"<jats:p>&lt;b&gt;&lt;i&gt;Aims:&lt;\/i&gt;&lt;\/b&gt; To evaluate the advantages and disadvantages of being underweight before pregnancy. &lt;b&gt;&lt;i&gt;Methods:&lt;\/i&gt;&lt;\/b&gt; Cohort study of a large population-based dataset of singleton births was used to compare maternal and neonatal outcomes of pre-gravid underweight body mass index (BMI &lt;18.5 kg\/m&lt;sup&gt;2&lt;\/sup&gt;) women with pre-gravid normal weight controls (BMI 18.5-24.9 kg\/m&lt;sup&gt;2&lt;\/sup&gt;). &lt;b&gt;&lt;i&gt;Results:&lt;\/i&gt;&lt;\/b&gt; A total of 10,995 pre-gravid underweight and 146,155 pre-gravid normal weight mothers were compared. The mean maternal age and gestational age were not different but lean mothers were significantly and more frequently primiparous, had a higher incidence of births at &lt;36 and &lt;32 weeks' gestation, and had a significantly higher incidence of low and very low birth weight infants. Lean mothers had a significantly lower incidence of birth weights &gt;4,000 g, less cesarean births and a lower incidence of gestational diabetes and hypertensive disorders. &lt;b&gt;&lt;i&gt;Conclusions:&lt;\/i&gt;&lt;\/b&gt; A tradeoff exists between the advantages of being lean before pregnancy in terms of less maternal morbidity in return for gaining a more advanced gestational age and higher birth weight.<\/jats:p>","DOI":"10.1159\/000447557","type":"journal-article","created":{"date-parts":[[2016,7,6]],"date-time":"2016-07-06T21:03:13Z","timestamp":1467838993000},"page":"303-306","source":"Crossref","is-referenced-by-count":8,"title":["Perinatal Advantages and Disadvantages of Being Underweight before Pregnancy: A Population-Based Study"],"prefix":"10.1159","volume":"82","author":[{"given":"Andreja","family":"Trojner Bregar","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Isaac","family":"Blickstein","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gabrijela","family":"Br\u017ean \u0160imenc","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vid","family":"Jan\u0161a","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ivan","family":"Verdenik","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miha","family":"Lu\u010dovnik","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nata\u0161a","family":"Tul","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2016,7,7]]},"container-title":["Gynecologic and Obstetric Investigation"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/447557","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/447557","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,23]],"date-time":"2025-04-23T16:54:10Z","timestamp":1745427250000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000447557"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,7,7]]},"references-count":0,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2017,5,4]]},"published-print":{"date-parts":[[2017,5,9]]}},"URL":"https:\/\/doi.org\/10.1159\/000447557","archive":["Portico"],"relation":{},"ISSN":["0378-7346","1423-002X"],"issn-type":[{"type":"print","value":"0378-7346"},{"type":"electronic","value":"1423-002X"}],"subject":[],"published":{"date-parts":[[2016,7,7]]}}}