TABLE 6

Infants’ Age (or Gestational Age) When the IFPS II Questionnaires Were Completed

QuestionnaireTarget Age, wk50th Percentile10th Percentile90th Percentile
Prenatal28–3230.426.433.4
Birth Screener1.02.00.37.6
Neonatal4.34.62.68.1
Month 28.69.17.413.1
Month 312.912.911.616.0
Month 417.217.416.119.7
Month 521.521.420.123.7
Month 625.826.325.128.4
Month 730.131.430.134.0
Month 938.738.437.141.0
Month 1045.145.644.148.3
Month 1253.054.353.057.0