1994
DOI: 10.1179/bjo.21.4.387
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The Incidence of Cleft Lip and Palate in Northern Ireland from 1980–1990

Abstract: This study reports the incidence of the various types of cleft lip and/or palate drawn from a regional database of all affected children born in Northern Ireland during the period 1980–1990. The incidence of these anomalies was 1·28 per 1000 live births (1:781). Fifty-three per cent of clefts involved the secondary palate only, 16 per cent the primary palate only, 26 per cent involved both primary and secondary palate, and 5 per cent were unconnected. Overall, more males than females were affected and there … Show more

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Cited by 70 publications
(47 citation statements)
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“…In studies conducted on a Caucasian population, the incidence of clefts in Northern Ireland was found to be 1.28 for every 1000 live births [18]. The incidence of cleft defects in the Stockholm County in Sweden was found to be 2.0 : 1000 live births [19].…”
Section: Discussionmentioning
confidence: 99%
“…In studies conducted on a Caucasian population, the incidence of clefts in Northern Ireland was found to be 1.28 for every 1000 live births [18]. The incidence of cleft defects in the Stockholm County in Sweden was found to be 2.0 : 1000 live births [19].…”
Section: Discussionmentioning
confidence: 99%
“…More males than females were affected, and more males had complete clefts. Unilateral clefts were most common on the left hand side 6 . Few prevalence studies discriminate between unilateral CLP and bilateral CLP, although a prevalence ratio of 4:1 has been reported.…”
Section: Prevalencementioning
confidence: 99%
“…Generally, boys are affected more than girls with a ratio of about 3 : 2 [5]. Males are more likely than females to have a cleft lip with or without cleft palate, while females are at a slightly greater risk for cleft palate alone [6,7]. Since facial mesenchyme is derived from neural crest, it is postulated that periconceptional folic acid supplementation may reduce the occurrence of offspring with orofacial clefts [8].…”
Section: Introductionmentioning
confidence: 99%