Parental survey

Surveys completed by parental respondents at different points in the child’s lifecourse
   
Maternal baseline survey Maternal baseline survey completed at regsitration
Father baseline survey Father baseline survey completed at registration
Growing Up maternal survey Growing Up maternal survey
Growing Up partner survey Growing Up maternal survey
Growing Up parental child survey Growing Up child-focused survey for parental/carer respondent

  N Youngest child Oldest child
Total unique respondents 12508 -1y 3m 12y 4m
Maternal baseline survey 11474 -1y 3m 0y 0m
Father baseline survey 3431 -1y 6m 0y 0m
Growing Up maternal survey 5092 6y 1m 12y 4m
Growing Up partner survey 232 6y 2m 11y 1m
Growing Up parental child survey 4913 7y 1m 12y 4m

Nested studies

Surveys completed as part of studies that are mested within the full cohort, investigating specific topics
   
BiB 1000 6m follow-up BiB 1000 6m follow-up
BiB 1000 12m follow-up BiB 1000 12m follow-up
BiB 1000 18m follow-up BiB 1000 18m follow-up
BiB 1000 24m follow-up BiB 1000 24m follow-up
BiB 1000 36m follow-up BiB 1000 36m follow-up
ALL-IN 12m follow-up Allergies and Infections study 12m follow-up
ALL-IN 24m follow-up Allergies and Infections study 24m follow-up
MeDALL study MeDALL study follow-up

  N Youngest child Oldest child
Total unique respondents 4235 0y 4m 5y 5m
BiB 1000 6m follow-up 1336 0y 4m 0y 9m
BiB 1000 12m follow-up 1313 0y 10m 1y 6m
BiB 1000 18m follow-up 1293 1y 3m 1y 10m
BiB 1000 24m follow-up 1228 1y 11m 2y 4m
BiB 1000 36m follow-up 1232 2y 11m 3y 4m
ALL-IN 12m follow-up 2551 0y 10m 2y 0m
ALL-IN 24m follow-up 2067 1y 1m 2y 10m
MeDALL study 2594 3y 11m 5y 5m

Child survey

Surveys completed by the child
   
Growing Up child survey Survey completed by the child as part of the Growing up study
Primary School Years child survey Wellbeing survey completed by the child as part of the Primary School Years study

  N Youngest child Oldest child
Total unique respondents 7474 6y 11m 12y 3m
Growing Up child survey 4319 7y 1m 12y 3m
Primary School Years child survey 5444 6y 11m 10y 6m

DXA scans

DXA body composition and densitometry scan
   
Child DXA scan Child DXA body composition and densitometry scan
Maternal DXA scan Maternal DXA body composition and densitometry scan
Father DXA scan Father or maternal partner DXA body composition and densitometry scan

  N Youngest child Oldest child
Total unique respondents 683 6y 2m 11y 0m
Child DXA scan 541 7y 1m 11y 0m
Maternal DXA scan 620 6y 2m 11y 0m
Father DXA scan 63 6y 2m 10y 6m

Accelerometry

ActiGraph accelerometry sensors are assigned to children and handed out at school to be worn daily for one week before collection from school.

  N Youngest child Oldest child
Actigraph 7-day 2099 7y 7m 11y 9m

Child biosamples

Child biosamples donated to the BiB biobank for research purposes
   
Child cord buffy coat sample Child cord buffy coat sample donated to the BiB research biobank
Child cord EDTA plasma sample Child cord EDTA plasma sample donated to the BiB research biobank
Child cord red blood cells Child cord red blood cells donated to the BiB research biobank
Child cord blood serum Child cord blood serum donated to the BiB research biobank
Child cord whole blood Child cord whole blood donated to the BiB research biobank
Child DNA from cord bloods Child DNA from cord bloods donated to the BiB research biobank
Child bloods at Growing Up Child bloods at Growing Up donated to the BiB research biobank

  N Youngest child Oldest child
Total unique respondents 10039 0y 0m 12y 4m
Child cord buffy coat sample 200 0y 0m 0y 0m
Child cord EDTA plasma sample 7909 0y 0m 0y 0m
Child cord red blood cells 7739 0y 0m 0y 0m
Child cord blood serum 9303 0y 0m 0y 0m
Child cord whole blood 6741 0y 0m 0y 0m
Child DNA from cord bloods 9158 0y 0m 0y 0m
Child bloods at Growing Up 1980 6y 10m 12y 4m

Father biosamples

Father biosamples donated to the BiB biobank for research purposes
   
Father DNA from saliva Father DNA from saliva donated to the BiB research biobank during pregnancy
Father bloods at Growing Up Father or partner bloods at Growing Up donated to the BiB research biobank

  N Youngest child Oldest child
Total unique respondents 3075 -1y 6m 11y 11m
Father DNA from saliva 3051 -1y 6m 0y 0m
Father bloods at Growing Up 207 6y 2m 11y 11m

Mother biosamples

Mother biosamples donated to the BiB biobank for research purposes
   
Maternal pregnancy plasma sample Maternal pregnancy plasma sample donated to the BiB research biobank
Maternal pregnancy red blood cells Maternal pregnancy red blood cells donated to the BiB research biobank
Maternal pregnancy serum sample Maternal pregnancy serum sample donated to the BiB research biobank
Maternal pregnancy urine sample Maternal pregnancy urine sample donated to the BiB research biobank
Maternal pregnancy whole blood sample Maternal pregnancy whole blood sample donated to the BiB research biobank
Mother bloods at Growing Up Mother bloods at Growing Up donated to the BiB research biobank

  N Youngest child Oldest child
Total unique respondents 12376 -1y 5m 12y 4m
Maternal pregnancy plasma sample 11577 -1y 5m 0y 0m
Maternal pregnancy red blood cells 11569 -1y 5m 0y 0m
Maternal pregnancy serum sample 11788 -1y 5m 0y 0m
Maternal pregnancy urine sample 7036 -1y 6m 0y 0m
Maternal pregnancy whole blood sample 10322 -1y 5m 0y 0m
Mother bloods at Growing Up 3355 6y 0m 12y 4m

Child growth

Child growth measurement from multiple sources combined over the child’s life course
   
Birth record body measures Child birthweight and other measures from the birth record
BiB1000 6m growth The child is weighed and measured in the BiB 1000 nested study 6m follow up
BiB1000 12m growth The child is weighed and measured in the BiB 1000 nested study 12m follow up
BiB1000 18m growth The child is weighed and measured in the BiB 1000 nested study 18m follow up
BiB1000 24m growth The child is weighed and measured in the BiB 1000 nested study 24m follow up
BiB1000 36m growth The child is weighed and measured in the BiB 1000 nested study 36m follow up
Health visitor measures Height and weight from the Health Visiting record
MeDALL growth The child is weighed and measured in the MeDALL nested study
NCMP Height and weight from the National Child Measurement Programme
School nurse measures Height, weight and other anthropometric measures taken by school nurses
GP record height and weight Height and weight from the GP record
Growing Up child growth The child is weighed and measured in the Growing Up study

  N Youngest child Oldest child
Total unique respondents 13758 0y 0m 11y 6m
Birth record body measures 13491 0y 0m 0y 0m
BiB1000 6m growth 1304 0y 4m 0y 9m
BiB1000 12m growth 1280 0y 10m 1y 6m
BiB1000 18m growth 1246 1y 3m 1y 10m
BiB1000 24m growth 1140 1y 11m 3y 3m
BiB1000 36m growth 1155 2y 11m 3y 4m
Health visitor measures 83478 0y 0m 7y 10m
MeDALL growth 2531 3y 11m 5y 4m
NCMP 8242 4y 0m 5y 9m
School nurse measures 14124 4y 5m 8y 9m
GP record height and weight 15518 0y 0m 10y 1m
Growing Up child growth 1247 7y 0m 11y 6m

BiB School Programme

The BiB School Programme consists of two waves, in the child’s Reception year and in Key Stage 2 (years 3 to 6). Data was captured from whole classes of BiB and non-BiB children. This section reports figures including the BiB children only. The Reception year wave was called Starting School and collected a variety of cognitive and developmental measures. The Key Stage 2 wave was called Primary School Years and repeated some of the cognitive and developmental measures, as well as introducing a battery of executive function tasks.
   
Reception year BPVS Reception year BPVS completed by BiB children as part of the Starting School study
Reception year letter identification Reception year letter identification completed by BiB children as part of the Starting School study
Reception year and Key Stage 2 SDQ Reception year and Key Stage 2 SDQ teacher-completed about BiB children as part of the Starting School study
Reception year and Key Stage 2 CKAT Reception year and Key Stage 2 CKAT completed by BiB children as part of the Starting School study
Key Stage 2 Executive Function Key Stage 2 Executive Function completed by BiB children as part of the Primary School Years study