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Chorionicity and neurodevelopmental outcomes at 5½ years among twins born preterm: the EPIPAGE2 cohort study.
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Hoarau Delphine, Tosello Barthélémy, Blanc Julie, Lorthe Elsa, Foix-L'Helias Laurence, D'Ercole Claude, Winer Norbert, Subtil Damien, Goffinet François, Kayem Gilles, Resseguier Noémie, Gire Catherine, EPIPAGE2 Obstetric Writing Group*
Аннотация
OBJECTIVE: To compare the neurodevelopmental outcomes of preterm twins at 5½ years by chorionicity of pregnancy.
DESIGN: Prospective nationwide population-based EPIPAGE2 (Etude Epidémiologique sur les Petits Âges Gestationnels) cohort study.
SETTING: A total of 546 maternity units in France, between March and December 2011.
POPULATION: A total of 1126 twins eligible for follow-up at 5½ years.
METHODS: The association of chorionicity with outcomes was analysed using multivariate regression models.
MAIN OUTCOME MEASURES: Survival at 5½ years with or without neurodevelopmental disabilities (comprising cerebral palsy, visual, hearing, cognitive deficiency, behavioural difficulties or developmental coordination disorders) were described and compared by chorionicity.
RESULTS: Among the 1126 twins eligible for follow-up at 5½ years, 926 (82.2%) could be evaluated: 228 monochorionic (MC) and 698 dichorionic (DC). Based on chronicity and gestational age of birth, we found no significant differences for severe neonatal morbidity. The rates of moderate/severe neurobehavioral disabilities were similar in infants from DC pregnancies versus infants from MC pregnancies (OR 1.22, 95% CI 0.65-2.28). By gestational age and without twin-twin transfusion syndrome (TTTS), no difference according to chorionicity was found for all neurodevelopmental outcome measures.
CONCLUSIONS: The neurodevelopmental outcomes among preterm twins at 5½ years is similar, irrespective of chorionicity.
DESIGN: Prospective nationwide population-based EPIPAGE2 (Etude Epidémiologique sur les Petits Âges Gestationnels) cohort study.
SETTING: A total of 546 maternity units in France, between March and December 2011.
POPULATION: A total of 1126 twins eligible for follow-up at 5½ years.
METHODS: The association of chorionicity with outcomes was analysed using multivariate regression models.
MAIN OUTCOME MEASURES: Survival at 5½ years with or without neurodevelopmental disabilities (comprising cerebral palsy, visual, hearing, cognitive deficiency, behavioural difficulties or developmental coordination disorders) were described and compared by chorionicity.
RESULTS: Among the 1126 twins eligible for follow-up at 5½ years, 926 (82.2%) could be evaluated: 228 monochorionic (MC) and 698 dichorionic (DC). Based on chronicity and gestational age of birth, we found no significant differences for severe neonatal morbidity. The rates of moderate/severe neurobehavioral disabilities were similar in infants from DC pregnancies versus infants from MC pregnancies (OR 1.22, 95% CI 0.65-2.28). By gestational age and without twin-twin transfusion syndrome (TTTS), no difference according to chorionicity was found for all neurodevelopmental outcome measures.
CONCLUSIONS: The neurodevelopmental outcomes among preterm twins at 5½ years is similar, irrespective of chorionicity.