Groups In South Africa Research Articles

An observational examination of houses built under the ``Breaking New Ground`` housing policy of South Africa

The aim of the study was to examine the physical condition of houses built under the ``Breaking New Ground`` scheme and the environment that surround the residential areas. The Breaking New Ground housing plan seeks to provide housing to low-income groups in South Africa. The housing structures were examined in accordance with the ``Breaking New Ground`` housing policy, the Constitution of South Africa and the Freedom Charter. The study was qualitative in nature and an observational method was used to collect data. The study examined the physical condition of 45 housing units and their surroundings. The observational examination indicated that most of the residential units had structural defects and the environment was not conducive to the promotion of health and wellbeing among housing beneficiaries and their families. The design and aesthetic appeal of the houses was distorted by poor workmanship as they presented with inherent flaws. It was observed that the location of some of the housing clusters was isolated and far from places of work and the transport network was not efficient. Recommendations include improved quality control, aesthetic appeal and durability of housing units constructed under the Breaking New Ground housing scheme in South Africa.
 Keywords: Low-cost housing; observation; breaking new ground; South Africa

Reconsidering the glaciogenic origin of Gondwana diamictites of the Dwyka Group, South Africa

Abstract The Gondwana Late Palaeozoic Ice Age is probably best represented by the Dwyka Group in South Africa. Striated and grooved surfaces or pavements are commonly considered to have formed subglacially, as are diamictites which have been interpreted as in-situ or reworked tillites. These interpretations were tested by investigation of outcrops in formerly well-studied areas, throughout South Africa. Detailed analyses have focused on striated surfaces/pavements and surface microtextures on quartz sand grains in diamictites. The sedimentological context of four pavements, interpreted to be glaciogenic, display features commonly associated with sediment gravity flows, rather than glaciation. A total of 4,271 quartz sand grains were subsampled from outcrops that are considered mainly to be tillites formed by continental glaciation. These grains, analysed by SEM, do not demonstrate the characteristic surface microtexture combinations of fracturing and irregular abrasion associated with Quaternary glacial deposits, but mainly a mix of surface microtextures associated with multicyclical grains. The Dwyka Group diamictites warrant reinterpretation as non-glacial sediment gravity flow deposits.

Solar Ultraviolet Radiation, Skin Cancer and Photoprotective Strategies in South Africa†.

The most recent data relating to the incidence of, and mortality from, the three commonest forms of skin cancer, namely basal cell carcinoma (BCC), squamous cell carcinoma (SCC) and cutaneous melanoma (CM), in the Black African, Colored, Asian/Indian and White population groups in South Africa are reviewed. While exposure to solar ultraviolet radiation is the major environmental risk factor for BCC in all four groups, for SSC in the White and Asian/Indian groups and for CM in the White group, this is unlikely to be the case for most SCCs in the Black African group and for most CMs in the Black African and Asian/Indian groups. Strategies for practical personal photoprotection in South Africa are discussed with particular emphasis on people at heightened risk of skin cancer including the White population group, those with HIV or oculocutaneous albinism and outdoor workers.

Is the World Health Organization’s multicentre child growth standard an appropriate growth reference for assessing optimal growth of South African mixed-ancestry children?


 In South Africa (SA), it has been estimated that one-third of boys and 25% of girls under the age of 5 years are stunted, according to the World Health Organization (WHO) Multicentre Growth Reference Study. During the past decade, research in developed and developing countries has shown that the international growth standard overestimates stunting and/or wasting when compared with population-specific growth references. Population-specific growth references typically incorporate genetic and environmental factors and can therefore better inform public health by identifying children who may be at risk for malnutrition, or who may be ill. Using the universal growth standard in SA may not be accurately assessing growth. In this article, environmental and genetic factors, and their influence on growth, are reviewed. These points are illustrated through a brief history of the peopling of SA, with an understanding of the socioeconomic and political climate – past and present. We discuss the uniqueness of certain population groups in SA, with contributions regarding some of the shortest peoples in the world and a history of sociopolitical inequities, which may mean that children from certain population groups who are perfectly healthy would underperform using the universal growth standard. Therefore, we suggest that a local population-specific growth reference would serve to better inform public health policies, and address childhood health equity and physical developmental pathways to adult health risk status.
 

Association between HIV and Prevalent Hypertension and Diabetes Mellitus in South Africa: Analysis of a Nationally Representative Cross-Sectional Survey

ObjectivesCardiovascular disease (CVD) burden is increasing among persons living with HIV (PLWH) in sub-Saharan Africa. It is unclear whether this reflects absolute increase in HIV-related CVD risk or unmasking by improved survival. Therefore, we examined whether HIV is associated with adverse cardiometabolic profiles among South African adults. MethodsWe analyzed a nationally representative dataset (n=6420), estimating the weighted prevalence of hypertension, diabetes, and 10-year predicted risk of incident fatal/nonfatal CVD (if aged ≥40 years). Associations between HIV and cardiometabolic indices were assessed using log-binomial regression models adjusted for sociodemographic factors. ResultsHIV population prevalence was 18.9%, with a median age of 36 years. Hypertension (44.2% vs 45.4%), diabetes (18.6% vs 20.4%), and overweight/obesity (body mass index ≥25 kg/m2: 54.9% vs 52.0%) prevalence did not substantially differ by HIV status, although PLWH had a lower 10-year predicted CVD risk (median: 5.1% vs 13.5%). In adjusted models, females who are HIV-negative had a 5 mm Hg higher median systolic blood pressure (128 vs 123 mmHg) than female PLWH. ConclusionsPLWH in South Africa have better cardiometabolic disease profiles than the general population, and social determinants, rather than HIV, may have a greater influence on cardiometabolic risk. Designating PLWH a CVD high-risk group in South Africa is likely unwarranted.

Potential implementation strategies, acceptability, and feasibility of new and repurposed TB vaccines.

Recently, two Phase 2B tuberculosis vaccine trials reported positive efficacy results in adolescents and adults. However, experience in vaccinating these age groups is limited. We identified potential implementation strategies for the M72/AS01E vaccination and BCG-revaccination-like candidates and explored their acceptability and feasibility. We conducted in-depth semi-structured interviews among key decision makers to identify implementation strategies and target groups in South Africa, India, and China. Thematic and deductive analysis using a coding framework were used to identify themes across and within settings. In all three countries there was interest in novel TB vaccines, with school-attending adolescents named as a likely target group. In China and India, older people were also identified as a target group. Routine vaccination was preferred in all countries due to stigma and logistical issues with targeted mass campaigns. Perceived benefits for implementation of M72/AS01E were the likely efficacy in individuals with Mycobacterium tuberculosis (Mtb) infection and efficacy for people living with HIV. Perceived challenges for M72/AS01E included the infrastructure and the two-dose regimen required. Stakeholders valued the familiarity of BCG but were concerned about the adverse effects in people living with HIV, a particular concern in South Africa. Implementation challenges and opportunities were identified in all three countries. Our study provides crucial information for implementing novel TB vaccines in specific target groups and on country specific acceptability and feasibility. Key groups for vaccine implementation in these settings were identified, and should be included in clinical trials and implementation planning.

Intolerance, xenophobia and cross-border supermarket groups’ operations in South Africa

ABSTRACT We examine whether there is a relationship between xenophobic attacks and the stock market value of supermarket groups in South Africa. We perform an event study analysis on significant incidents of violent attacks targeted at shops owned by foreigners in South Africa for the period 2006–2017. Using an event study approach with an augmented market model, we uncover evidence that the stock market perceives these events as bad news instead of good news for supermarkets having operations in South Africa and other parts of Africa, as they realise a decline in abnormal returns of about 2.57 percent. We interpret our findings as economic costs of xenophobic attacks emanating from the Johannesburg Stock Exchange. Our analysis attempts to shed light on the peace-building challenges and the potentially grim implications of xenophobia on economic activity in South Africa.

History of crustal growth in Africa and the Americas from detrital zircon and Nd isotopes in glacial diamictites

Diamictites produced by continental glaciations were deposited in the Mesoarchean (∼2.9 Ga), Paleoproterozoic (∼2.4–2.2 Ga), Neoproterozoic (∼0.75–0.58 Ga), and Paleozoic (∼0.3 Ga), and, with the exception of the Mesoarchean, occur on multiple modern continents. We examine the provenance of a selection of these diamictites from all four time periods and three continents via detrital zircon U-Pb geochronology and Hf isotope and whole-rock Nd isotope analyses. Mesoarchean samples from South Africa contain mostly Mesoarchean zircon, with a much smaller number of Paleoarchean grains. Zircon Hf and whole-rock Nd point towards their derivation from reworked Paleoarchean crust. Paleoproterozoic samples from North America share a similar unimodal zircon age distribution, with a peak at 2.7 Ga and a narrow range in Hf isotopes that is slightly superchondritic. Coupled with whole-rock Nd results, these data point to their derivation from reworked juvenile Mesoarchean crust. By contrast, the Nd isotope data and existing published detrital zircon U-Pb data for Paleoproterozoic diamictites from South Africa indicate a mix of Neoarchean and Mesoarchean sources. Neoproterozoic samples from Namibia share a Paleoproterozoic detrital zircon population with variable but subchondritic Hf isotope compositions, indicating derivation from reworked Neoarchean crust. Most samples also have Mesoproterozoic and Neoproterozoic zircon with both positive and negative εHf(i), and all have Nd isotope compositions yielding Paleoproterozoic model ages. A Neoproterozoic sample from Canada contains mostly Neoproterozoic detrital zircon with variable Hf isotope compositions, indicating a mix of juvenile and reworked Mesoproterozoic crust. Samples from different parts of the Paleozoic Dwyka Group in South Africa show significantly different provenance, with a western locality containing only zircon older than 2.0 Ga and a Neoarchean Nd model age. By contrast, eastern samples have Paleoproterozoic model ages and published detrital zircon ages are largely Mesoproterozoic and younger. Paleozoic samples from Bolivia have a Paleoproterozoic Nd model age.Overall, the difference between zircon initial Hf isotope compositions and the depleted mantle is smallest for Archean zircons, indicating major episodes of crustal reworking followed shortly after crust formation (perhaps reflecting the last stage of cratonization). Hf and Nd data together record major episodes of juvenile crust formation at 3.2, 2.8–2.7, 2.0–1.7, and 1.3–0.9 Ga, consistent with previously documented global crust formation events. The diamictites provide no evidence for pre-3.6 Ga felsic crust in these regions.

Negotiating a COVID-19 Prevention Strategy with the Family: Youth Perspectives in a Rural Setting in South Africa

The coronavirus (COVID-19) crisis is likely to exacerbate hardships experienced by the South African youth, who are already considered the most vulnerable group in South Africa. This study explores a family-negotiating strategy to empower the youth in South Africa during the coronavirus crisis. The participants comprised a purposive sample of 10 (female = 70%, male 30%; age range 18 to 35 years old) from the church youth in South Africa. Data were collected by means of semi-structured individual interviews using social media because of the practice of social distancing and lockdowns in South Africa. The data were thematically analysed. The findings suggest that the youth need to take care of their personal health and accept the new economic status of the family brought about by COVID-19. Adapting to these new routines is essential to avoid spreading the pandemic. However, cultural taboos around family finances need to be lifted. Moreover, the lack of support systems and family solidarity during COVID-19 (regarding the future life and education of the youth) are challenges that should be handled by the family, as well as the youth, if stress and frustration among the youth are to be avoided. As a result, in the event of a lockdown, students may need to learn how to negotiate COVID-19 preventive techniques with their families.

Adaptation and norming of the Edinburgh Cognitive and behavioural amyotrophic lateral sclerosis screen (ECAS) for three language groups in South Africa

Objectives: To adapt and translate the Edinburgh Cognitive and behavioural amyotrophic lateral sclerosis screen (ECAS); to generate preliminary normative data for three language groups in South Africa (SA); to assess the convergent validity of the ECAS in SA samples. Methods: The ECAS was linguistically and culturally adapted for Afrikaans-, isiXhosa-, and English-speaking SA adults (n = 108, 100, and 53, respectively). Each language group was stratified by age and educational level. Cutoff scores for cognitive impairment were set at the group mean minus two standard deviations (SDs). A pilot sample of ALS patients and controls (n = 21 each) were administered the ECAS and an extensive neuropsychological evaluation (NPE) and the Montreal Cognitive Assessment (MoCA) to assess convergent validity. Results: Across the three language groups, the total ECAS cutoff scores ranged from 68 to 97. The ECAS score correlated significantly positively with educational level (p < 0.001) and negatively with age (p < 0.005). The restricted letter fluency task demonstrated a floor effect, particularly in Afrikaans-speakers. The mean total ECAS score (±SD) was similar in ALS patients (103.52 ± 11.90) and controls (100.67 ± 20.49; p = 0.58). Three (14.3%) ALS patients scored below the cutoff for cognitive impairment. Correlations between individual ECAS subtests and analogous NPE tests ranged from weak to moderate. The MoCA score was significantly positively correlated with the ECAS total score (r = 0.59; p = < 0.001). Conclusions: The adapted ECAS and associated normative data will aid cognitive screening of African ALS patients. Larger participant numbers are needed to assess the validity of the adapted instrument.

South African Anti-Fascism and the Nazi Foreign Office: Antisemitism, Anti-communism and the Surveillance of the Third Reich’s International Enemies

ABSTRACT This article offers a new analysis of how the Third Reich’s Foreign Office reported on anti-fascist activities in the Union of South Africa during the 1930s. Based on letters, dispatches and reports written by the German legation and official German representatives in South Africa, the article reveals and discusses how Nazi officials followed and reacted to anti-fascist activity in South Africa. The article demonstrates how the German legation perceived anti-fascist movements and analysed them as a part of a rising global anti-German sentiment, Jewish activism, and ‘international bolshevism’. South African anti-fascism reveals itself also as a direct concern for the official bilateral relations between South Africa and Nazi Germany during the 1930s. Germany was intensely concerned with South African public opinion when it came to protests against German Nazism, international fascism and local fascist groups in South Africa. The article thus offers to expand our understanding of South Africa’s place in the global struggle between anti-fascism and fascism and discusses the ways in which anti-fascism was delegitimised. Furthermore, it shows how German clubs, offices, ships and consulates became important sites of protest and targets of anti-fascist activities and boycotts.

An Information Privacy Concerns and Expectations Study of Demographic Groups in South Africa

An Information Privacy Concerns and Expectations Study of Demographic Groups in South Africa

The Northern Drakensberg Cableway: An Unworkable yet Immortal Development

This study explores the proposed ‘Drakensberg Cableway’ in the Northern Drakensberg. This cableway project is mired in ongoing controversy with both the consultation process and feasibility study heavily criticised. The proposed site of the cableway borders a world heritage site, is within a culturally sensitive area and prone to highly variable weather, including thunderstorms and high winds. The purpose of this study was to garner the views of a mountain user group in South Africa regarding the proposed cableway using a questionnaire survey. Respondents were overwhelmingly not in favour of the development. Users noted several serious concerns ranging from economic, environmental, statutory and political impacts. In particular, the proposed cableway appears financially unsustainable due to low tourist numbers. Additionally, the infrastructure required will have a deleterious effect on the natural environment. It appears that lessons from South Africa’s other two cableways, in terms of economic impacts, environmental issues and weather-related risks, have not been considered. While the provincial KwaZulu-Natal government may punt the proposed cableway as a ‘silver bullet’ solution for the development and social issues bedevilling the area; the project may instead even exacerbate already fraught social and environmental conditions, both at the proposed lower cableway and upper cableway station. Government officials touting this project need to recognise that tourism development in peripheral mountain areas has to proceed within a much wider social and cross-sectoral economic development context.

Prevalence of Tobacco Smoking Among Ex-Mineworkers of Transkei, South Africa

Background: The smoking of tobacco is one of the most important confounding factors contributing to lung pathology. It is therefore essential to know the degree of prevalence of smoking in the community of former mineworkers of the Transkei, who constitute one of the groups in South Africa most affected by smoking. Objective: Prevalence study of smoking among former mineworkers of Transkei, South Africa Method: This is a record review study from the Benefit Examination Clinic, which was carried out once a week at the chest section of Mthatha Hospital in Transkei. Results: 466 ex-mineworkers were studied for their smoking habits. Non-smokers were lower in number at 97 (21%), the number of ex-smokers was 226 (48%) and smokers numbered 143 (31%). Little more than three-fifth were smokers - 89 (20%) - and ex-smokers - 142 (30%) - who were in their middle age (40-59yrs). Between 1% and 5% were observed to be in the extreme ends of their age groups (&lt;40 &amp;&gt;60). It was observed that among the ex-miners who had worked in the mines for a period of 10 to 19 years, the ex-smokers constituted 26%, the smokers 17% and non-smokers 9%. The ex-smokers, smokers and non-smokers were in a proportion of about 5:3:2. The population of smokers peaked from 15% for those with a mining history of nine or fewer year’s underground to 42% for those who had been mining for 10 to 19 years and fell almost at the same rate from 42% to 22% in the group with 20 or more years of mining. Non-smokers among the sample increased from 5% (nine or fewer years) to 9% in the 10 to 19 years group, and ultimately settled at 7% when they had worked 20 years or more. Conclusion: The prevalence of smoking among ex-mineworkers is high (79%) in the Transkei region of South Africa.

The effects of COVID-19 on vulnerable groups: A reflection on South African informal urban settlements

Background: The economically vulnerable population, mostly black, especially those who are residing in precarious informal settlements are most susceptible to the coronavirus disease 2019 (COVID-19) pandemic.Aim: To determine the impacts of the COVID-19 pandemic on the socio-economic condition of the vulnerable groups in South Africa. It also attempts to reflect the government’s response strategies to provide help and services for the vulnerable communities who are considered to be most susceptible to the existing pandemic. Lastly, the response strategies of civil society groups and the challenges they are encountering in providing humanitarian assistance to indigent communities are explored.Setting: This is a reflective study where secondary data has been analysed and intertwined with the researchers’ experiences and insights of the South African informal settlements’ welfare.Methods: This article followed a reflective approach where the experiences of the vulnerable communities are strategically reflected upon.Results: This fascinating study unearthed the effects of the coronavirus disease on the socio-economic conditions of vulnerable communities, the economy of the informal sector, the brutal enforcement agencies during the lockdown period, criminality, the fragmented government response and the marginalisation and frustration of civil society groups in providing humanitarian assistance to those in need.Conclusion: The South African government’s fragmentations, bureaucratic, maladministration and corruption in public departments have adversely impacted the welfare of the vulnerable groups who are living in the informal settlements. The human rights violations by the security agencies which are directed to the indigent people, and the centralisation of the humanitarian efforts by government had a negative effect on their wellbeing.

A Spatial Analysis of Tuberculosis Related Mortality in South Africa.

Background: South Africa, with an estimated annual tuberculosis (TB) incidence of 360,000 cases in 2019, remains one of the countries with the largest burden of TB in the world. The identification of highly burdened TB areas could support public health policy planners to optimally target resources and TB control and prevention interventions. Objective: To investigate the spatial epidemiology and distribution of TB mortality in South Africa in 2010 and its association with area-level poverty and HIV burden. Methods: The study analysed a total of 776,176 TB deaths for the period 2005–2015. Local and global and spatial clustering of TB death rates were investigated by Global and Local Moran’s Indices methods (Moran’s I). The spatial regression analysis was employed to assess the effect of poverty and HIV on TB mortality rates. Results: There was a significant decrease in TB mortality rate, from 179 per 100,000 population in 2005 to 60 per 100,000 population in 2015. The annual TB mortality rate was higher among males (161.5 per 100,000 male population; (95% confidence interval (CI) 132.9, 190.0) than among females (123.2 per 100,000 female population; (95% CI 95.6, 150.8)). The 35–44 age group experienced higher TB mortality rates, regardless of gender and time. Hot spot clusters of TB mortality were found in the South-Eastern parts of the country, whereas cold spot clusters were largely in the north-eastern parts. Tuberculosis death rates were positively associated with poverty, as measured by the South African Multidimension Poverty Index (SAMPI) as well TB death rates in the neighbouring districts. Conclusion: The findings of this study revealed a statistically significant decrease in TB deaths and a disproportionate distribution of TB deaths among certain areas and population groups in South Africa. The existence of the identified inequalities in the burden of TB deaths calls for targeted public health interventions, policies, and resources to be directed towards the most vulnerable populations in South Africa.

Objective understanding of five front-of-pack labels among consumers in Nelson Mandela Bay, South Africa

Objective: This study aimed to assess the objective understanding of five front-of-pack label formats, namely the Reference Intake, Multiple Traffic Light label, Nutri-Score, health endorsement logo and warning label, among consumers in Nelson Mandela Bay, South Africa. Design: This was a cross-sectional, exploratory study. Setting: Interviewer-administered surveys were conducted at 12 randomly selected food retail outlets in an urban setting. Subjects: A total of 359 adult participants were included in this study. Outcome measures: Objective understanding was measured by asking participants to rank food products according to their nutritional quality, using the displayed front-of-pack label. Results: The type of front-of-pack label significantly influenced ranking ability (p < 0.00001). All the evaluative front-of-pack labels significantly improved the participants’ ability to identify healthier food products compared with the no-label control. The reductive Reference Intake, however, showed no significant impact on consumer understanding. Conclusion: Evaluative front-of-pack labels significantly improved the participants’ ability to identify healthier food products, when compared with the Reference Intake and no-label control. Future research should test the objective understanding of culturally diverse groups in South Africa, particularly among rural populations.

Medicinal Plants for Mitigating Pain and Inflammatory-Related Conditions: An Appraisal of Ethnobotanical Uses and Patterns in South Africa

In South Africa, traditional medicine remains the first point of call for a significant proportion of the population seeking primary healthcare needs. This is particularly important for treating common conditions including pain and inflammation which are often associated with many disease conditions. This review focuses on the analysis of the trend and pattern of plants used for mitigating pain and inflammatory-related conditions in South African folk medicine. An extensive search was conducted using various scientific databases and popular ethnobotanical literature focusing on South African ethnobotany. Based on the systematic analysis, 38 sources were selected to generate the inventory of 495 plants from 99 families that are considered as remedies for pain and inflammatory-related conditions (e.g., headache, toothache, backache, menstrual pain, and rheumatism) among different ethnic groups in South Africa. The majority (55%) of the 38 studies were recorded in three provinces, namely, KwaZulu-Natal, Limpopo, and Western Cape. In terms of the number of mentions, the most popular plants used for pain and inflammatory-related conditions in South Africa were Ricinus communis L. (10), Aloe ferox Mill. (8), Pentanisia prunelloides subsp. latifolia (Hochst.) Verdc. (8), Dodonaea viscosa Jacq var. angustifolia (L.f) Benth. (8), (L.) W.T.Aiton. (7) Ruta graveolens L. (7), and Solanum aculeastrum Dunal. (7). The top five plant families represented were Asteraceae (13%), Fabaceae (8%), Apocynaceae (4.3%), Asparagaceae (4%), and Lamiaceae (4%). An estimated 54% of the recorded plants were woody (trees and shrubs) in nature, while the leaves (27%) and roots (25%) were the most dominant plant parts. The use of plants for alleviating pain and inflammatory-related conditions remains popular in South African folk medicine. The lagging ethnobotanical information from provinces such as North West, Gauteng, and Free State remains a gap that needs to be pursued meticulously in order to have a complete country-wide database.

Freedom of Religion and Minority Rights in South Africa

The South African Constitution contains an extensive list of rights, several of which are relevant, directly or indirectly, to accommodate the needs of persons that belong to a religious minority group in South Africa. This article examines the extent to which these protections are utilized by individuals and courts and explores the interplay between these various sources of protection that religious minority groups and their members can rely on. It will examine the courts’ case law on freedom of religion to determine whether the courts have relied on one or all of the rights offered by the Constitution when dealing with claims made by persons belonging to a religious minority group. The reasons for and impacts of the choices that the courts have made will also be investigated. Equally important are the choices made by persons belonging to a religious minority group when approaching courts to vindicate their rights.

The age at which adult height is achieved during adolescence in the Birth to Twenty Cohort, Johannesburg, South Africa

Background. The core of the study involves comparing the secular trends in height among self-reported black and white racial groups in South Africa (SA). The white group represents that part of the population that has always been affluent and therefore has growth trends comparable with those of developed nations of the world. In comparing the groups, we wanted to see the extent to which the black population has caught up, if it all, since the introduction of democracy in 1994. Objectives. To establish the age at which linear growth plateaus; to compare the age of growth cessation and the achieved adult height between sexes and racial groups in SA; and to compare data from the Bone Health Cohort with previous similar studies to ascertain the secular trend. Methods. We analysed prospective data of 569 individuals who had annual anthropometric assessments from age nine until 20 years (1999 - 2010). The SuperImposition by Translation and Rotation (SITAR) statistical programme was used to model height and age at growth cessation. Results. There was a total of 183 black females, 93 white females, 205 black males and 88 white males. Black and white females achieved adult height at a similar age (15.1 and 15.3 years), but black females were 5.7 cm shorter. Black and white males achieved their adult height at 17.5 and 16.5 years, respectively, black males being 4.6 cm shorter. Mean adult black male height is currently 170.7 cm v. 166.9 cm in 1971, while there were no significant secular changes in the other groups. Conclusions. There has been a positive secular growth trend in height over 30 years among black males, but no changes in the other groups.