{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T07:42:01Z","timestamp":1792136521885,"version":"4.4.0"},"reference-count":0,"publisher":"SMW Supporting Association","issue":"2526","license":[{"start":{"date-parts":[[2011,6,20]],"date-time":"2011-06-20T00:00:00Z","timestamp":1308528000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Swiss Med Wkly"],"abstract":"<jats:p>OBJECTIVE: To  provide population-based, gestational age (GA) stratified incidence of  mortality and morbidities.\n        METHODS:Population-based  prospective observational study of infants born between 23\u00a00\/7 and 31 6\/7 weeks  GA in the years 2000\u20132004 in all Swiss neonatal intensive care units. Outcomes  measured were: mortality, severe intraventricular haemorrhage (IVH), periventricular  leukomalacia (PVL), necrotizing enterocolitis (NEC), moderate\/severe  bronchopulmonary dysplasia (BPD) and free of major complications.\n        RESULTS:  Mortality was 19% of 3083 infants. Mortality (95% CI) decreased from 95% (88%,  99%) at 23 weeks to 3% (2%, 5%) at 31 weeks. Short-term survival free of major  complications was 66% (65%, 68%) overall and increased from 2%(0%, 9%) to 89%  (87%, 92%). Rate of IVH was 8% (7%, 9%), PVL 2% (2%, 3%), NEC 3% (3%, 4%) and  BPD 11% (10%, 12%). Males had more IVH than females (9% vs. 6%). Antenatal steroids were associated  with lower mortality (11% vs. 18%) and IVH (5% vs. 12%). Odds of free of major  complications (OR, 95%CI) were positive for female gender 1.2 (1.0, 1.5),  steroids 1.3 (1.1, 1.5), multiple gestation 1.3 (1.0, 1.6), not small for  gestational age 2.7 (2.0, 3.5), and each additional week of GA 1.6 (1.5, 1.7).\n        CONCLUSION:  Mortality and incidence of morbidities known to influence outcome show a weekly  decline with increasing gestational age, except for PVL. Gestational age  stratified data are a key component for prenatal counselling.<\/jats:p>","DOI":"10.4414\/smw.2011.13212","type":"journal-article","created":{"date-parts":[[2011,10,27]],"date-time":"2011-10-27T03:48:08Z","timestamp":1319687288000},"page":"w13212","source":"Crossref","is-referenced-by-count":11,"title":["Population-based  age stratified morbidities of premature infants in Switzerland"],"prefix":"10.57187","volume":"141","author":[{"given":"NM","family":"Bajwa","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M","family":"Berner","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S","family":"Worley","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"RE","family":"Pfister","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"36756","published-online":{"date-parts":[[2011,6,20]]},"container-title":["Swiss Medical Weekly"],"original-title":[],"link":[{"URL":"https:\/\/smw.ch\/index.php\/smw\/article\/download\/1308\/1500","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/smw.ch\/index.php\/smw\/article\/download\/1308\/1501","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/smw.ch\/index.php\/smw\/article\/download\/1308\/1500","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,15]],"date-time":"2025-08-15T02:59:43Z","timestamp":1755226783000},"score":1,"resource":{"primary":{"URL":"https:\/\/smw.ch\/index.php\/smw\/article\/view\/1308"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2011,6,20]]},"references-count":0,"journal-issue":{"issue":"2526","published-online":{"date-parts":[[2011,6,20]]}},"URL":"https:\/\/doi.org\/10.4414\/smw.2011.13212","relation":{},"ISSN":["1424-3997"],"issn-type":[{"value":"1424-3997","type":"electronic"}],"subject":[],"published":{"date-parts":[[2011,6,20]]}}}