Table 1. Numbers of Patients in each group.

Terms:	Term Deliveries	Term Deliveries	Preterm Deliveries	Preterm Deliveries	All Deliveries	All Deliveries
Recording Time	Number of records	Mean/Median Recording weeks	Number of records	Median/Median Recording Weeks	Number of records	Mean/Median Recording Weeks
Early	143	22.7/22.86	19	23.0/23.43	162	22.73/23.0
Later	119	30.8/31.14	19	30.2/30.86	138	30.71/31.14
All Recording Time	262	26.75/24.36	38	27.0/25.86	300	26.78/24.43