Birth weight in a large series of triplets

BMC Pediatrics

Table 1 Data collection in NTR triplets

Questionnaire	N trio list retour	N triplet list retour	Response rate
Q familial twinning	269		80%
Q1	323		58%
Q2	264		49%
CBCL age 3 - 12 mother		516	54 - 68%
CBCL age 3 - 12 father		510	54 - 68%
TRF consent form age 6 - 12	106		62%
TRF age 6 - 12		188	78%
YSR age 14 - 18		212	30 - 48%
ANTR surveys (list 1 to 8; ongoing)		315	47 - 48%

CBCL = Child Behavior Check List; TRF = Teacher Report Form; YSR = Youth Self Report; NTR = Netherlands Twin Register; ANTR = Adult NTR. Trio list are surveys inquiring about the trio, triplet list are surveys inquiring about a triplet.

ISSN: 1471-2431