From: Validation of birth certificate and maternal recall of events in labor and delivery with medical records in the Iowa health in pregnancy study
Difference from maternal recall
Birth certificate
n
%
Birth weight
0
0.0
± 50 g
2273
89.6
± 100 g
2418
95.3
± 150 g
2489
98.1
± 200 g
2538
100.0
Gestational age
2655
98.9
± 1 week
2684
99.9
± 2 weeks
1