ArticlePaediatric and perinatal epidemiology2004
Transition from Birth to Ten to Birth to Twenty: the South African cohort reaches 13 years of age.
Article in Paediatric and perinatal epidemiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 2 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
54 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- A systematic overview of prospective cohort studies of cardiovascular disease in sub-Saharan Africa.Cardiovascular journal of Africa · 2012Pooled it
- What have birth cohort studies asked about genetic, pre- and perinatal exposures and child and adolescent onset mental health outcomes? A systematic review.European child & adolescent psychiatry · 2010Pooled it
- Feasibility and acceptability of implementing the Global Scales for Early Development (GSED) package for children 0-3 years across three countries.Pilot and feasibility studies · 2025Article
- Article
- The association between the timing, intensity and magnitude of adolescent growth and body composition in early adulthood.European journal of clinical nutrition · 2024Article
- Article
- Association between Bone Lead Concentration and Aggression in Youth from a Sub-Cohort of the Birth to Twenty Cohort.International journal of environmental research and public health · 2022Article
- The Long-Term Health and Human Capital Consequences of Adverse Childhood Experiences in the Birth to Thirty Cohort: Single, Cumulative, and Clustered Adversity.International journal of environmental research and public health · 2022Article
- Costs of common perinatal mental health problems in South Africa.Global mental health (Cambridge, England) · 2022Article
- Longitudinal Associations of Pubertal Timing and Tempo With Adolescent Mental Health and Risk Behavior Initiation in Urban South Africa.The Journal of adolescent health : official publication of the Society for Adolescent Medicine · 2021Article
- Adolescent physical activity, sedentary behavior and sleep in relation to body composition at age 18 years in urban South Africa, Birth-to-Twenty+ Cohort.BMC pediatrics · 2021Article
- Branched-chain and aromatic amino acids and cardiometabolic risk in Black African and Asian Indian populations.Metabolomics : Official journal of the Metabolomic Society · 2020Article
- Genesis, Procedures, Attrition Rate and Major Reasons for Missing Measurement Session by the Study Participants in the Ellisras Longitudinal Study.Children (Basel, Switzerland) · 2020Article
- Longitudinal patterns of physical activity, sedentary behavior and sleep in urban South African adolescents, Birth-To-Twenty Plus cohort.BMC pediatrics · 2019Article
- The prevalence of malnutrition and growth percentiles for urban South African children.BMC public health · 2019Article
- Evaluating the Psychometric Properties of a Measure of Ethnic Identity Among Black South African Youth.Identity (Mahwah, N.J.) · 2019Article
- Influence of socioeconomic status on changes in body size and physical activity in ageing black South African women.European review of aging and physical activity : official journal of the European Group for Research into Elderly and Physical Activity · 2018Article
- Ethnic Differences in Peripheral Skeletal Development Among Urban South African Adolescents: A Ten-Year Longitudinal pQCT Study.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2017Article
- Factors associated with obesity and metabolic syndrome in ageing black South African women.Global health action · 2017Article
- Contactable Non-responders Show Different Characteristics Compared to Lost to Follow-Up Participants: Insights from an Australian Longitudinal Birth Cohort Study.Maternal and child health journal · 2016Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
Birth to Ten now Birth to Twenty (BT20), is the largest and longest running longitudinal birth cohort study in Africa. In this paper, the methods, magnitude and significance of recruitment, follow-up and attrition are described. Although more than 5000 births were notified in the area in the 7-week enrollment period in early 1990, only 3275 children were established to have been born to women who were residents in the Greater Johannesburg Metropolitan area for at least the first 6 months of the child's life. Seventy per cent of these children and their families have been followed up for more than 12 years, indicating an average attrition rate of less than 3% per annum, with most attrition occurring in the first 2 years of the study. The most common reason for attrition was movement out of the study area, although detailed follow-up, and the extent of contact re-established at later points, indicate very high levels of circular migration among women and young children between urban and rural areas, as well as very high levels of residential mobility within urban areas. There has been no differential loss of vulnerable families and children. African women living in Soweto are the most consistent participants in the study. A bias, by population group membership and residential area, was introduced in the recruitment phases of the project by the difficulty of enrolling the small proportion of people in the metropolis, largely Whites, who used private delivery services in 1989-90.
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