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Since both organ systems are hypothesised to be involved in the pathogenesis of infantile colic, a condition characterised by excessive crying during the first months of life, impaired fetal growth and preterm birth may be risk factors for infantile colic.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A total of 62\u2009761 liveborn singletons from the <jats:styled-content style=\"fixed-case\">D<\/jats:styled-content>anish <jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>ational <jats:styled-content style=\"fixed-case\">B<\/jats:styled-content>irth <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>ohort (1996 to 2002) were studied. Infantile colic was defined according to <jats:styled-content style=\"fixed-case\">W<\/jats:styled-content>essel's modified criteria based on maternal interview conducted at 6 months post\u2010partum.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 2605 (4.2%) infants were born preterm, 54\u2009441 (86.7%) at term, and 5715 (9.1%) post\u2010term. A total of 4964 (7.9%) infants fulfilled <jats:styled-content style=\"fixed-case\">W<\/jats:styled-content>essel's modified criteria for infantile colic. The risk for infantile colic increased with decreasing gestational age after adjustment for covariates. The highest odds [odds ratio (95% confidence interval)] was observed for infants born before 32 completed gestational weeks (1.5 [95% CI 1.0, 2.2], reference: 40 gestational weeks). Small for gestational age infants (birthweight below 10th percentile) had an increased odds of infantile colic (1.2 [95% CI 1.1, 1.3]) in all gestational age groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>We observed an increased risk of infantile colic in preterm and small for gestational age infants in a large cohort. Our results suggest that the aetiology of infantile colic may be found in the prenatal, perinatal, and neonatal period.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ppe.12095","type":"journal-article","created":{"date-parts":[[2013,11,22]],"date-time":"2013-11-22T02:27:26Z","timestamp":1385087246000},"page":"138-145","source":"Crossref","is-referenced-by-count":42,"title":["Gestational Age, Small for Gestational Age, and Infantile Colic"],"prefix":"10.1111","volume":"28","author":[{"given":"Ioanna","family":"Milidou","sequence":"first","affiliation":[{"name":"Perinatal Epidemiology Research Unit Department of Pediatrics Aarhus University Hospital  Aarhus Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charlotte","family":"S\u00f8ndergaard","sequence":"additional","affiliation":[{"name":"Department of Pediatrics Herning Regional Hospital  Aarhus Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Morten S\u00f8ndergaard","family":"Jensen","sequence":"additional","affiliation":[{"name":"Department of Pediatrics Aarhus University Hospital  Aarhus Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J\u00f8rn","family":"Olsen","sequence":"additional","affiliation":[{"name":"Department of Epidemiology School of Public Health Aarhus University  Aarhus Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tine Brink","family":"Henriksen","sequence":"additional","affiliation":[{"name":"Perinatal Epidemiology Research Unit Department of Pediatrics Aarhus University Hospital  Aarhus Denmark"},{"name":"Department of Pediatrics Aarhus University Hospital  Aarhus Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2013,11,21]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1542\/peds.14.5.421"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(04)17191-2"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/sj.ejcn.1602457"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0031-3955(16)38227-X"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1001\/archpedi.156.12.1172"},{"key":"e_1_2_6_7_1","first-page":"14","article-title":"Prolonged and unsoothable crying bouts in infants with and without colic","volume":"26","author":"Barr RG","year":"2005","journal-title":"Journal of Developmental and Behavioral Pediatrics"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0091-6749(95)70224-5"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1542\/peds.106.6.1349"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpeds.2009.05.012"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1399-3038.2005.00207.x"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2004-1036"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.3945\/jn.109.116822"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1097\/QCO.0b013e328345d5b5"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jaci.2006.12.671"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1097\/00003081-200606000-00008"},{"key":"e_1_2_6_17_1","first-page":"S54","article-title":"Neurodevelopmental outcome of small\u2010for\u2010gestational\u2010age infants","volume":"52","author":"Goldenberg RL","year":"1998","journal-title":"European Journal of Clinical Nutrition"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-8749.1990.tb16949.x"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-8749.1991.tb14930.x"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1651-2227.1996.tb14062.x"},{"key":"e_1_2_6_21_1","doi-asserted-by":"publisher","DOI":"10.1542\/peds.29.4.579"},{"key":"e_1_2_6_22_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-8749.1996.tb12100.x"},{"key":"e_1_2_6_23_1","unstructured":"ChristoffersenMN. 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