Year 2001-2003 2001-2003 2003-2005 2006-2008 2008-2010
Wave 1 1 2 3 4
Age full term preterm 2 years CA 5 years CA 7 years CA
Family functioning  P:FAD
P:IOF
 P:FAD
Home environment  P:HSQ
Parent-child relations O:SDV

,

CA = Corrected age for prematurity

S – self report
P – parent report
C – child report
T – teacher report
N – welfare nurse
O – observation

XM: Mother
XF/P: Father/partner
XC: Child
XS: Sibling
XG: Grandparent

SDV: Study Devised Variable
FAD: McMaster Family Assessment Device
HSQ: Home Screening Questionnaire
IOF: Impact on Family Scale