Born in Bradford Data Dictionary

Maternity records BiB pregnancy

Table ID: BiB_Pregnancy.matrecs_bib_preg

github | csv

Entity type Variables Entities Updated Related tables
Participant 144 10041 2020-11-18 matrecs_bib_admiss
matrecs_bib_labbp
matrecs_bib_meds
matrecs_bib_oedema
matrecs_bib_postbp
matrecs_bib_preg_p1
matrecs_bib_preg_p2
matrecs_bib_preg_p3
matrecs_bib_pregbp
matrecs_bib_proteinuria

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 from the current BiB pregnancy.

variable label value_type summary
BiBPregNumber Cohort recruited pregnancy number decimal mean (sd)
1.10 (0.30)

min < median < max
1.00 < 1.00 < 3.00

100.00% complete

has_matrecs_bib_preg Has maternity records bib pregnancy decimal mean (sd)
1.00 (0.00)

min < median < max
1.00 < 1.00 < 1.00

100.00% complete

has_prnprg Has: Pregnancy third trimester weight decimal 1 : has
100.00% complete

prnbp3rdtriw 3rd trimester weight decimal mean (sd)
77.45 (15.44)

min < median < max
32.00 < 75.00 < 160.00

56.80% complete

prnbp3rdtriwdate Date of 3rd trimester weighing date from 2006-12-15
to 2011-05-18

56.31% complete

prnbp3rdtriwnotdoc 3rd trimester weight not documented decimal 1 : Documented
2 : Not documented
99.95% complete

prnbpamnionoted Amniocentesis noted decimal 1 : No
2 : Yes
3 : Not documented
99.53% complete

prnbpamnioreasons Amniocentesis reasons text 12 unique values
233 non-missing values
1 to 38 characters
prnbpanaemianoted Anaemia noted decimal 1 : No
2 : Yes
3 : Not documented
99.74% complete

prnbpanaemiaresult Anaemia result decimal mean (sd)
9.13 (0.77)

min < median < max
4.50 < 9.40 < 9.90

23.02% complete

prnbpantibody Antibodies text 42 unique values
10897 non-missing values
2 to 27 characters
prnbpbookingdate Date of booking date from 2006-10-31
to 2010-12-14

99.17% complete

prnbpbplabn Number of BP obs in labour decimal mean (sd)
0.90 (0.41)

min < median < max
0.00 < 1.00 < 13.00

91.19% complete

prnbpbplabtaken Any BPs recorded in labour decimal 1 : No
2 : Yes
3 : Not documented
97.25% complete

prnbpbppostn Number of BPs recorded post partum decimal mean (sd)
3.50 (5.83)

min < median < max
0.00 < 2.00 < 155.00

97.49% complete

prnbpbppostrec Any BPs recorded postpartum decimal 1 : No
2 : Yes
3 : Not documented
99.84% complete

prnbpbppregn Number of BPs recorded in pregnancy decimal mean (sd)
10.98 (5.54)

min < median < max
0.00 < 10.00 < 115.00

99.88% complete

prnbpbppregrec Any blood pressures recorded in pregnancy decimal 1 : No
2 : Yes
3 : Not documented
99.94% complete

prnbpcervcerc Cervical Cerclage decimal 1 : No
2 : Yes
3 : Not documented
99.73% complete

prnbpchrovillsamp Chorionic villus sampling decimal 1 : No
2 : Yes
3 : Not documented
99.73% complete

prnbpchrovsreasons Reasons for chorionic villus sampling text 1 unique values
1 non-missing values
15 characters
prnbpconfetmon Continuous fetal monitoring decimal 1 : No
2 : Yes
3 : Not documented
0.46% complete

prnbpdesigpsutur Designation of person doing suturing text 3 unique values
481 non-missing values
6 to 14 characters
prnbpdischinf Vaginal discharge/infection decimal 1 : No
2 : Yes
3 : Not documented
99.84% complete

prnbpdruglab1 Other drugs during labour (1) text 64 unique values
1455 non-missing values
4 to 18 characters
prnbpdruglab2 Other drugs during labour (2) text 48 unique values
330 non-missing values
1 to 18 characters
prnbpdruglab3 Other drugs during labour (3) text 43 unique values
180 non-missing values
7 to 18 characters
prnbpdruglab4 Other drugs during labour (4) text 28 unique values
74 non-missing values
3 to 20 characters
prnbpdruglab5 Other drugs during labour (5) text 16 unique values
35 non-missing values
1 to 15 characters
prnbpdruglab6 Other drugs during labour (6) text 12 unique values
17 non-missing values
1 to 18 characters
prnbpdruglab7 Other drugs during labour (7) text 4 unique values
4 non-missing values
10 to 15 characters
prnbpdruglab8 Other drugs during labour (8) text 1 unique values
1 non-missing values
14 characters
prnbpeclampconv Eclamptic convulsions decimal 1 : No
2 : Yes
3 : Not documented
99.90% complete

prnbpelectcaes Elective caesarean decimal 1 : No
2 : Yes
3 : Not documented
99.95% complete

prnbpexhyper Preexisting hypertension decimal 1 : No
2 : Yes
95.34% complete

prnbpextceph External cephallic version decimal 1 : No
2 : Yes
3 : Not documented
99.89% complete

prnbpfolicacid Folic acid in last 6 months decimal 1 : No
2 : Yes
3 : Not documented
99.73% complete

prnbpgdm GDM diagnosed decimal 1 : No
2 : Yes
3 : Not documented
99.84% complete

prnbpgdmt_diet GDM treatment: diet decimal 1 : No
2 : Yes
3 : Not documented
4.41% complete

prnbpgdmt_insulin GDM treatment: insulin decimal 1 : No
2 : Yes
3 : Not documented
5.30% complete

prnbpgdmt_lifestyle GDM treatment: lifestyle changes decimal 1 : No
2 : Yes
3 : Not documented
3.03% complete

prnbpgdmt_metformin GDM treatment: metformin decimal 1 : No
2 : Yes
3 : Not documented
0.46% complete

prnbpgdmt_none GDM no treatment decimal 1 : No
2 : Yes
3 : Not documented
15.20% complete

prnbpgdmt_notdoc GDM treatment not documented decimal 1 : Documented
2 : Not documented
0.23% complete

prnbpgenherpes Genital herpes decimal 1 : No
2 : Yes
3 : Not documented
99.89% complete

prnbpgestaged3rdtriw Gestational age at 3rd trimester weight measurement (weeks) decimal mean (sd)
254.18 (18.84)

min < median < max
29.00 < 256.00 < 295.00

56.28% complete

prnbpgestagew3rdtriw Gestational age at 3rd trimester weight measurement (weeks) decimal mean (sd)
36.31 (2.69)

min < median < max
4.14 < 36.57 < 42.14

56.28% complete

prnbpgestht Gestational hypertension decimal 1 : No
2 : Yes
99.60% complete

prnbpgonorrhoea Gonorrhoea decimal 1 : No
2 : Yes
3 : Not documented
99.88% complete

prnbphdp HDP category decimal 1 : Normotensive
2 : Gestational HT
3 : Pre-eclampsia
99.60% complete

prnbphepatitisb Hepatitis b decimal 1 : No
2 : Yes
3 : Not documented
99.88% complete

prnbphyperemesis Hyperemesis decimal 1 : No
2 : Yes
3 : Not documented
99.90% complete

prnbpintfetmon Intermittent fetal monitoring decimal 1 : No
2 : Yes
3 : Not documented
0.51% complete

prnbpivf In vitro fertilisation decimal 1 : No
2 : Yes
3 : Not documented
99.89% complete

prnbplaburprot Was urine tested for protein in labour decimal 1 : No
2 : Yes
3 : Not documented
96.49% complete

prnbpoedemalab Any oedemas recorded in labour decimal 1 : No
2 : Yes
3 : Not documented
95.87% complete

prnbpoedemapreg Any oedemas recorded in pregnancy decimal 1 : No
2 : Yes
3 : Not documented
98.91% complete

prnbpoligohydram Oligohydramnios decimal 1 : No
2 : Yes
3 : Not documented
99.87% complete

prnbpothmed Other medications taken in last 6 months (y/n) decimal 1 : No
2 : Yes
3 : Not documented
99.30% complete

prnbpothmedn Other medications taken in last 6 months (count) decimal mean (sd)
0.46 (0.74)

min < median < max
0.00 < 0.00 < 6.00

97.37% complete

prnbppainrellab1 Pain relief in labour (1) text 19 unique values
1728 non-missing values
1 to 19 characters
prnbppainrellab2 Pain relief in labour (2) text 14 unique values
847 non-missing values
1 to 19 characters
prnbppainrellab3 Pain relief in labour (3) text 10 unique values
308 non-missing values
7 to 19 characters
prnbppainrellab4 Pain relief in labour (4) text 7 unique values
89 non-missing values
1 to 18 characters
prnbppainrellab5 Pain relief in labour (5) text 6 unique values
18 non-missing values
1 to 18 characters
prnbppainrellab6 Pain relief in labour (6) text 2 unique values
5 non-missing values
1 to 18 characters
prnbpperinealtr 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
15.50% complete

prnbpplacpraev Placenta praevia decimal 1 : No
2 : Yes
3 : Not documented
99.90% complete

prnbppolyhydr Polyhydramnios/hydramnios decimal 1 : No
2 : Yes
3 : Not documented
99.91% complete

prnbppostadmany Any hospital admissions postpartum decimal 1 : No
2 : Yes
3 : Not documented
98.61% complete

prnbppostadmn Number of hospital admissions post partum decimal mean (sd)
0.01 (0.09)

min < median < max
0.00 < 0.00 < 3.00

97.96% complete

prnbppostsutexam Post suturing examination decimal 1 : No
2 : Yes
3 : Not documented
7.23% complete

prnbppreeclampsia Pre-eclampsia decimal 1 : No
2 : Yes
99.60% complete

prnbppregadmany Any hospital admissions in pregnancy decimal 1 : No
2 : Yes
3 : Not documented
16.48% complete

prnbppregadmn Number hospital admissions in pregnancy decimal mean (sd)
0.82 (1.32)

min < median < max
0.00 < 0.00 < 15.00

16.39% complete

prnbppresutexam Pre suturing examination decimal 1 : No
2 : Yes
3 : Not documented
7.43% complete

prnbprenalpreg Any renal function recorded in pregnancy decimal 1 : No
2 : Yes
3 : Not documented
99.54% complete

prnbprenalpregn Number of renal function observations decimal mean (sd)
1.57 (1.96)

min < median < max
0.00 < 1.00 < 21.00

99.03% complete

prnbpsfetgrthret Suspected fetal growth retardation decimal 1 : No
2 : Yes
3 : Not documented
99.91% complete

prnbpsyphilis Syphilis decimal 1 : No
2 : Yes
3 : Not documented
99.90% complete

prnbpthrpreterm Threatened preterm birth decimal 1 : No
2 : Yes
3 : Not documented
99.91% complete

prnbpurtrinf Urinary tract infection decimal 1 : No
2 : Yes
3 : Not documented
99.90% complete

prnbpvagbld1st Vaginal bleeding 1st trimester decimal 1 : No
2 : Yes
3 : Not documented
99.91% complete

prnbpvagbld2nd Vaginal bleeding 2nd trimester decimal 1 : No
2 : Yes
3 : Not documented
99.90% complete

prnbpvagbld3rd Vaginal bleeding 3rd trimester decimal 1 : No
2 : Yes
3 : Not documented
99.88% complete

prnpbaddvit Pregnancy vitamins in last 6 months decimal 1 : No
2 : Yes
3 : Not documented
99.62% complete

prnpbgestagedpregbk Gestational age in days at BiB pregnancy booking decimal mean (sd)
89.36 (26.37)

min < median < max
0.00 < 84.00 < 271.00

99.01% complete

prnpbgestagewpregbk Gestational age in weeks at BiB pregnancy booking decimal mean (sd)
12.77 (3.77)

min < median < max
0.00 < 12.00 < 38.71

99.01% complete

prnprexconany Any pre-existing condition decimal 1 : No
2 : Yes
3 : Not documented
88.43% complete

prnprexconasthma Pre-existing asthma decimal 1 : No
2 : Yes
3 : Not documented
23.27% complete

prnprexconbackprob Pre-existing back problems decimal 1 : No
2 : Yes
3 : Not documented
21.58% complete

prnprexcondoth1 Other pre-existing condition 1 text 290 unique values
2519 non-missing values
2 to 42 characters
prnprexcondoth2 Other pre-existing condition 2 text 88 unique values
153 non-missing values
1 to 39 characters
prnprexcondoth3 Other pre-existing condition 3 text 22 unique values
25 non-missing values
1 to 28 characters
prnprexcondoth4 Other pre-existing condition 4 text 5 unique values
5 non-missing values
1 to 18 characters
prnprexconeclampsia Previous eclampsia decimal 1 : No
2 : Yes
3 : Not documented
17.40% complete

prnprexconepilepsy Pre-existing epilepsy decimal 1 : No
2 : Yes
3 : Not documented
17.68% complete

prnprexconfemcirc Pre-existing female circumcision decimal 1 : No
2 : Yes
3 : Not documented
17.44% complete

prnprexconfertprob Pre-existing fertility problems decimal 1 : No
2 : Yes
3 : Not documented
19.16% complete

prnprexcongeninf Pre-existing genital infection decimal 1 : No
2 : Yes
3 : Not documented
17.70% complete

prnprexcongynprob Pre-existing gynae problems decimal 1 : No
2 : Yes
3 : Not documented
18.77% complete

prnprexconheartprob Pre-existing heart problems decimal 1 : No
2 : Yes
3 : Not documented
17.86% complete

prnprexconhighbp Pre-existing high blood pressure decimal 1 : No
2 : Yes
3 : Not documented
18.41% complete

prnprexconincont Pre-existing incontinence decimal 1 : No
2 : Yes
3 : Not documented
17.88% complete

prnprexconkidprob Pre-existing kidney problems decimal 1 : No
2 : Yes
3 : Not documented
18.29% complete

prnprexconlivdis Pre-existing liver disease decimal 1 : No
2 : Yes
3 : Not documented
17.39% complete

prnprexconmentheal Pre-existing mental illness decimal 1 : No
2 : Yes
3 : Not documented
19.57% complete

prnprexconmigraine Pre-existing migraine decimal 1 : No
2 : Yes
3 : Not documented
22.38% complete

prnprexconsti Pre-existing constipation decimal 1 : No
2 : Yes
3 : Not documented
17.73% complete

prnprexcont1dm Pre-existing type 1 diabetes decimal 1 : No
2 : Yes
3 : Not documented
17.46% complete

prnprexcont2dm Pre-existing type 2 diabetes decimal 1 : No
2 : Yes
3 : Not documented
17.38% complete

prnprexcontbexp Pre-existing TB exposure decimal 1 : No
2 : Yes
3 : Not documented
17.69% complete

prnprexconthromb Pre-existing thrombosis decimal 1 : No
2 : Yes
3 : Not documented
17.48% complete

prnprexconthryroid Pre-existing thyroid problems decimal 1 : No
2 : Yes
3 : Not documented
18.53% complete

prnprfhistdiab FH of diabetes decimal 1 : No
2 : Yes
3 : Not documented
99.85% complete

prnprfhistdiabch FH of diabetes in woman’s child decimal 1 : No
2 : Yes
3 : Not documented
99.85% complete

prnprfhistdiabfa FH of diabetes in woman’s father decimal 1 : No
2 : Yes
3 : Not documented
99.85% complete

prnprfhistdiabmo FH of diabetes in woman’s mother decimal 1 : No
2 : Yes
3 : Not documented
99.85% complete

prnprfhistdiabrelnd FH of diabetes, relationship not documented decimal 1 : No family history
2 : Relatives documented
3 : Relatives not documented
4 : Family history not documented
99.85% complete

prnprfhistdiabsb FH of diabetes in woman’s sibling decimal 1 : No
2 : Yes
3 : Not documented
99.85% complete

prnprfhistecl FH of eclampsia decimal 1 : No
2 : Yes
3 : Not documented
99.83% complete

prnprfhisteclch FH of eclampsia in woman’s child decimal 1 : No
2 : Yes
3 : Not documented
99.83% complete

prnprfhisteclfa FH of eclampsia in woman’s father decimal 1 : No
2 : Yes
3 : Not documented
99.83% complete

prnprfhisteclmo FH of eclampsia in woman’s mother decimal 1 : No
2 : Yes
3 : Not documented
99.83% complete

prnprfhisteclrelnd FH of eclampsia, relationship not documented decimal 1 : No family history
2 : Relatives documented
3 : Relatives not documented
4 : Family history not documented
99.83% complete

prnprfhisteclsb FH of eclampsia in woman’s sibling decimal 1 : No
2 : Yes
3 : Not documented
99.83% complete

prnprfhisthyp FH of high blood pressure decimal 1 : No
2 : Yes
3 : Not documented
99.87% complete

prnprfhisthypch FH of hypertension in woman’s child decimal 1 : No
2 : Yes
3 : Not documented
99.87% complete

prnprfhisthypfa FH of hypertension in woman’s father decimal 1 : No
2 : Yes
3 : Not documented
99.87% complete

prnprfhisthypmo FH of hypertension in woman’s mother decimal 1 : No
2 : Yes
3 : Not documented
99.87% complete

prnprfhisthyprelnd FH of hypertension, relationship not documented decimal 1 : No family history
2 : Relatives documented
3 : Relatives not documented
4 : Family history not documented
99.87% complete

prnprfhisthypsb FH of hypertension in woman’s sibling decimal 1 : No
2 : Yes
3 : Not documented
99.87% complete

prnprfhistment FH of mental illness decimal 1 : No
2 : Yes
3 : Not documented
99.88% complete

prnprfhistmentch FH of mental illness in woman’s child decimal 1 : No
2 : Yes
3 : Not documented
99.88% complete

prnprfhistmentfa FH of mental illness in woman’s father decimal 1 : No
2 : Yes
3 : Not documented
99.88% complete

prnprfhistmentmo FH of mental illness in woman’s mother decimal 1 : No
2 : Yes
3 : Not documented
99.88% complete

prnprfhistmentrelnd FH of mental illness, relationship not documented decimal 1 : No family history
2 : Relatives documented
3 : Relatives not documented
4 : Family history not documented
99.88% complete

prnprfhistmentsb FH of mental illness in woman’s sibling decimal 1 : No
2 : Yes
3 : Not documented
99.88% complete

prnprfhistthrom FH of thrombosis decimal 1 : No
2 : Yes
3 : Not documented
99.86% complete

prnprfhistthromch FH of thrombosis in woman’s child decimal 1 : No
2 : Yes
3 : Not documented
99.86% complete

prnprfhistthromfa FH of thrombosis in woman’s father decimal 1 : No
2 : Yes
3 : Not documented
99.86% complete

prnprfhistthrommo FH of thrombosis in woman’s mother decimal 1 : No
2 : Yes
3 : Not documented
99.86% complete

prnprfhistthromrelnd FH of thrombosis, relationship not documented decimal 1 : No family history
2 : Relatives documented
3 : Relatives not documented
4 : Family history not documented
99.86% complete

prnprfhistthromsb FH of thrombosis in woman’s sibling decimal 1 : No
2 : Yes
3 : Not documented
99.86% complete