Born in Bradford Data Dictionary

Maternity records pre-BiB pregnancy

Table ID: BiB_Pregnancy.matrecs_prebib_preg

github | csv

Entity type Variables Entities Updated Related tables
Participant 13 5611 2020-11-19 NA

Abstraction of routine information from maternal paper records for the Born in Bradford cohort. The abstraction was funded by a NIHR HTA project (11-99-02). Four trained research assistants abstracted data from maternal paper records. The abstraction was conducted in 2013. Only women with completed baseline questionnaires, oral glucose tolerance test results and birth outcomes were eligible. Data were entered straight into a web database. Accuracy of abstractions were checked on 5% of records for all abstracted data, all error rates were less than 1%. This source contains information about pregnancies from before the BiB index pregnancy.

variable label value_type summary
has_matrecs_prebib_preg Has maternity records pre-bib pregnancy decimal mean (sd)
1.00 (0.00)

min < median < max
1.00 < 1.00 < 1.00

100.00% complete

prnprebprgbirthyr Pre BiB preg birth year decimal mean (sd)
2002.03 (4.31)

min < median < max
1980.00 < 2003.00 < 2012.00

94.31% complete

prnprebprggdm Pre BiB preg GDM diagnosis decimal 1 : No
2 : Yes
3 : Not documented
81.85% complete

prnprebprggdmt_diet Pre BiB preg GDM trt: Diet decimal 1 : No
2 : Yes
3 : Not documented
0.79% complete

prnprebprggdmt_insulin Pre BiB preg GDM trt: Insulin decimal 1 : No
2 : Yes
3 : Not documented
0.56% complete

prnprebprggdmt_lifestyle Pre BiB preg GDM trt: Lifestyle decimal 1 : No
2 : Yes
3 : Not documented
0.55% complete

prnprebprggdmt_metaformin Pre BiB preg GDM trt: Metaformin decimal 1 : No
2 : Yes
3 : Not documented
0.00% complete

prnprebprggdmt_none Pre BiB preg GDM trt: None decimal 1 : No
2 : Yes
3 : Not documented
19.65% complete

prnprebprggdmt_notdoc Pre BiB preg GDM trt: not documented decimal 1 : No
2 : Yes
3 : Not documented
2.52% complete

prnprebprgmultipreg Pre BiB preg number of births decimal mean (sd)
1.01 (0.09)

min < median < max
1.00 < 1.00 < 5.00

99.47% complete

prnprebprgogtt Pre BiB preg OGTT done decimal 1 : No
2 : Yes
3 : Not documented
99.36% complete

prnprebprgperineal Pre BiB preg perineal trauma decimal 1 : None
10 : Not documented
2 : 1st degree
3 : 2nd degree
4 : 3rd degree
5 : 4th degree
6 : Episiotomy
7 : Laceration
8 : Tear
9 : Graze
99.32% complete

prnprebprgpregid Pre BiB preg ID - links to pre-BiB infant data decimal mean (sd)
5849.90 (3132.24)

min < median < max
4.00 < 5864.50 < 11255.00

100.00% complete