Prediction of VS-LRTI using clinical variables and serological
status
Preterm infants were excluded from the GLM given that a 3-month
follow-up was not sufficient to analyze their risk of being admitted to
hospital for VS-LRTI (they might have been hospitalized since birth at 3
months of age). In multivariate analysis, maternal multiparity (Relative
Risk, RR: 2.34, 95%CI [1.58; 3.01]) and a date of birth before the
peak of the epidemic (RR: 2.84, 95%CI [2.08; 3.59]) were
significantly associated with the occurrence of VS-LRTI; there was no
significant association between antibody titer and VS-LRTI (Table 2).