Référence bibliographique 
Nadeau, Line, Tessier, Réjean, Boivin, Michel, Lefebvre, Francine et Robaey, Philippe. 2003. «Extremely Premature and Very Low Birthweight Infants: A Double Hazard Population? ». Social Development, vol. 12, no 2, p. 235-248.
« The primary objective of the present study was to assess the relative contributions of birth status (defined by gestational age and birthweight) and certain family environment characteristics to various behaviors in school age children: these were expected to vary according to the behaviors studied. The second objective was to verify the effect of the temporality of the assessments on the contribution of family environment to explaining behaviors assessed at age 7. More specifically, the study compares results in which family environment is evaluated at birth or seven years later when behaviors are assessed. While birth status and family environment are expected to have independent (additive) contributions, given its temporal proximity to the behavioral assessment, family environment at age 7 will have a more significant contribution than birth status or family environment evaluated at birth. » (p. 237)
« This study was part of a longitudinal follow-up of a population of 194 extremely preterm children [...] with a very low birthweight [...], admitted to the intensive care unit at Ste-Justine Hospital between January 1987 and October 1990 and between October 1991 and September 1992. [...] 170 children (88% of the surviving cohort) took part in the follow-up, while at 5 years 9 months, 118 of 156 eligible children (76%) were assessed. At age 7, the social behaviors of 96 EP/VLBW children (62% of eligible children and 81% of children seen in previous phases) were assessed in a school setting. » (p. 237)
- Blishen’s socioeconomic index ;
- Revised Class Play (RCP; Masten, Morison, & Pelligrini, 1985) ;
- Child Behavior Checklist/4-18 (CBLC/4-18; Achenbach, 1991a) ;
- Teacher’s report Form (TRF; Achenbach, 1991b).
Type de traitement des données :
« This article evaluates the contributions of birth status (defined by gestational age and birthweight) and family adversity at birth and at age 7 to explaining behavior problems at age 7. The behaviors of 96 extremely preterm and very low birth-weight children and 66 full-term children were assessed in a school setting by peers, teachers and parents. The results show that a significant relationship exists between birth status and isolation and social withdrawal problems as well as between birth status and social immaturity and inattention problems. Family adversity at birth has a significant contribution to aggressive behaviors reported by the three sources whereas, at age 7, this index is associated only with aggressive behaviors and social immaturity problems reported by parents. In conclusion, the results of the present study qualify the findings of studies that suggest that at school age, the effect of prematurity decreases and that behavior problems are explained chiefly by family environment characteristics. Our results indicate that the findings must take into account the cohort studied, the environmental measures used, the type of behaviors assessed as well as the type of informants. » (p. 235)