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Search Results: 1 - 10 of 191295 matches for " D Marais "
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Lipoprotein metabolism and its derangements
D Marais
Continuing Medical Education , 2003,
Assessment of nutritional status of older people in homes for the aged in the Somerset West area
ML Marais, D Marais, D Labadarios
South African Journal of Clinical Nutrition , 2007,
Factors influencing high socio-economic class mothers’ decision regarding formula-feeding practices in the Cape Metropole
M Sowden, D Marais, R Marais
South African Journal of Clinical Nutrition , 2009,
Abstract: The aims of the study were to identify the reasons why high socio-economic class women in the Cape Metropole decide not to breast-feed; to evaluate whether the type and volume of infant formula selected by the mother was appropriate for her infant’s current age and to identify the factors that influence the decision-making process when deciding which infant formula to feed her infant. An observational descriptive study with consecutive sampling was utilised. Data of 55 mothers with infants aged 0 to 6 months that were not currently breast-fed was captured in day care centres and private clinics situated in the Cape Metropole. Data was collected by means of a self-administered questionnaire available in Afrikaans and English. The majority of mothers (80%) decided only after the birth of their infant to rather opt for formula feeding. Evident factors that were identified as barriers to breast-feeding include a lack of knowledge and experience (38%) as well as a lack of facilities at public places (75%) and at work (71%) to breast-feed. Perceived benefits of infant formula included that the father could help with the workload (67%) and does not feel left out (38%), the mother knows what volume of milk is received (84%) and the convenience if the mother is working (64%). The mothers were overall not concerned about possible side-effects of breast-feeding and did not feel that their breasts were physically not of optimal physiology to breast-feed. One of the greatest challenges to support, protect and promote breast-feeding is to ensure that information sources give scientifically correct information to the uninformed or information-seeking mother in a standardised and positive manner.
New therapeutic developments in lipidology
D Blom, A Marais
Continuing Medical Education , 2009,
Abstract: Since the previous CME on lipidology was published in 2003 there have been many new and exciting developments in lipidmodifying therapy.
Job satisfaction of South African registered dietitians
J Visser, D Marais
South African Journal of Clinical Nutrition , 2012,
Abstract: Objectives: The aim of this study was to determine the overall level of job satisfaction among South African registered dietitians and possible relationships between the influencing factors. Design: The design was a cross-sectional descriptive study. Setting and subjects: A national survey was carried out among all dietitians registered with the Health Professions Council of South Africa, excluding community service dietitians. Outcome measures: A two-part, self-administered, adapted job satisfaction survey questionnaire was used. Demographic data were collected. The questionnaire covered nine themes pertaining to job satisfaction: salary, promotion, knowledge and skills, professional colleagues, being a member of the multidisciplinary team, communication, the work environment, rewards of the job and nature of the work. Results: A final response rate of 22.5% (n = 340) was obtained. South African registered dietitians were only slightly satisfied (65.7%) with their current employment. There was no significant difference (p-value = 0.291) pertaining to overall job satisfaction between those working and living overseas and those working and living in South Africa. Primarily, lower levels of satisfaction were observed to be due to poor salaries, lack of promotion opportunities and a poor perception of professional image. Significant positive correlations were found between age (p-value = 0.036), professional experience (p-value = 0.035), area of expertise (p-value = 0.001), hours of work (p-value = 0.021) and location of work (p-value = 0.00001). Conclusion: Although overall job satisfaction scores indicated that South African registered dietitians are only slightly satisfied with their employment, registered dietitians reported that they love the nature of the work and what they do, tending towards confirmation of career satisfaction. Recommendations include re-evaluation of registered dietitian salary scales, career pathing with promotion opportunities, boosting the professional image and expanding the teaching of nondietetic skills to dietetic undergraduates.
Monetêre beheer oor die probleem van inflasie*
M. D. Marais
Koers : Bulletin for Christian Scholarship , 1965, DOI: 10.4102/koers.v33i2.1356
Abstract: Gedurende 1965 is ons ekonomie gekenmerk deur: a) ’n Skerp styging in invoere, soos weerspie l in die feit dat gedurende die eerste sewe maande van 1965 invoere Rl,055 miljoen bedra het vergeleke met R856.8 miljoen die ooreenstemmende tydperk verlede jaar — ’n styging van byna R200 miljoen. In die afwesigheid van beperkende invoerbe- heermaatre ls sou invoere gedurende 1965 in totaal waarskyn- lik die ontsettende syfer van byna R2.000 miljoen bereik het. b) Ten tweede is ons ekonomie gekenmerk deur ’n da- ting in uitvoere. Die uitvoer van goedere (goud en her-uitvoere uitgesluit) het in die eerste sewe maande van 1965 slegs R537.5 miljoen bedra vergeleke met R559.2 miljoen in die ooreen- stemmende tydperk verlede jaar — ’n daling van ongeveer R22 miljoen. Dié daling kan hoofsaaklik toegeskryf word aan die volgende faktore: (i) Die droogte-toestande oor wye dele van ons land. (ii) Dalende pryse vir grondstowwe op wêreldmarkte; en (iii) Maklike en winsgewende afset vir plaaslike nywerheids- produkte op die tuismark wat veroorsaak het dat daar by te veel nyweraars ’n mate van traagheid ontstaan het om die moeiliker en meer mededingende buite- landse markte te betree of uit te bou.
What do dietetics students think professionalism entails?
D Marais, ML Marais, J Visser, C Boome, DCM Taylor
African Journal of Health Professions Education , 2012,
Abstract: Background. Members of a profession are committed to codes of ethics and professionalism. The aim was to determine which professionalism attributes dietetics students deem important and relevant to their profession. Methods. A total of 109 dietetics students from two universities in the Western Cape, South Africa, completed a demographic questionnaire and were required to sort a pack of cards containing 90 attributes of professionalism into 11 piles, ranging from ‘least agree’ to ‘most agree’. An element of forced choice was introduced by restricting the number of cards in each of the 11 piles (Q-sort). PQMETHOD 2.11 was used for data analysis, ranking items by their mode score and giving an indication of which items were most consistently favoured. Results. Professionalism attributes considered most important included Protect confidential information, Trust, Respect patients’ right of shared decision making, Honesty, Good clinical judgment, Communication skills and Carry out professional responsibilities. Interpersonal professionalism attributes were considered more important than intrapersonal or public professionalism. Conclusion. This study suggests that professionalism attributes are not attained continuously for dietetic students. The findings should form an integral part of dietetic and other health sciences curriculum planning to ensure that the assessment of these attributes is relevant and consistent with development over the years. AJHPE 2012;4(1):28-33. DOI:10.7196/AJHPE.165
Use of knee height as a surrogate measure of height in older South Africans
D Marais, M L Marias, D Labadarios
South African Journal of Clinical Nutrition , 2007,
Abstract: The study aimed to determine whether knee height would be a more appropriate surrogate measurement than armspan in determining height and body mass index (BMI) in a group of South African older people ( 60 years). A random sample of adults (older than 18 years) who attended selected clinics or who lived in selected old-age homes in the Western Cape volunteered to participate in the study. Subjects were divided into a study group of older people ( 60 years of age, N = 1 233) and a comparative group of younger adults (18 - 59 years, N = 1 038). Armspan, knee height, standing height and weight were measured using standardised techniques. The standing height measurements were significantly different between the two groups (p = 0.0001), with a mean for adults of 1.61 m (standard deviation (SD) 0.09) compared with that of older peole (1.57 m (SD 0.09)). Mean standing height decreased with age. Knee-height measurements were not significantly different between the two groups, but when used to calculate height, the adults were significantly taller (p = 0.0001), with a mean height of 1.67 m (SD 0.06) compared with that of the older people (1.59 m (SD 0.08)). Mean armspan also decreased with age, and derived standing height was significantly different (p = 0.0001) between the two groups, with adults being taller (1.67 m (SD 0.11)) than the older people (1.63 m (SD 0.11)). In this study group, the knee-height measurements were more closely related to the standing height than the armspan. The BMI calculated from armspan-derived height tended to classify the older people towards underweight. Knee-height measurement would appear to be a more accurate and appropriate method to determine height in older people in South Africa. South African Journal of Clinical Nutrition Vol. 20 (1) 2007: pp. 39-44
Familial Hypercholesterolaemia: The Cape Town Experience
J C Firth, A D Marais
South African Medical Journal , 2008,
Abstract: Familial hypercholesterolaemia (FH), an autosomal dominantly inherited disorder characterised by elevated plasma low-density lipoprotein (LDL) cholesterol levels, tendon xanthomata and premature ischaemic heart disease, is amenable to treatment with modern medication. The clinical and biochemical details of 1 031 patients with FH were analysed. FH is the most common monogenic disorder of lipoprotein metabolism presenting to the Lipid Clinic at Groote Schuur Hospital, accounting for about 20% of consultations. The hospital classified 55% of the FH patients as white, 43% as coloured, 1.5% as Asian and 0.5% as black. In the FH cohort (whose mean age at presentation was 44 years), 80% had tendon xanthomata, 36% had arcus cornealis, and 14% had xanthelasma. Tendon xanthomata was present in almost 90% of patients by the age of 50 years. Arcus cornealis was present in about 45% by the age of 40 years, further increasing in frequency with age. Cardiovascular complications included ischaemic heart disease (43%), stroke (1.5%), transient ischaemic attacks (1.3%), and peripheral vascular disease (3.7%). The mean age of death was 55 (±13) years; 51 (±10) years in men and 61 (±12) years in women. In 46% of the cohort, a defective gene was identified by testing for locally prevalent mutations. South African Medical Journal Vol. 98 (2) 2008: pp. 99-104
Do heavy metals counter the potential health benefits of wine?
A.D Marais, DM Blackhurst
Journal of Endocrinology, Metabolism and Diabetes of South Africa , 2009,
Abstract: The possibility that wine, consumed in modest amounts, can have health benefits has been highlighted frequently in the public and scientific press and was recently briefly reviewed in the South African medical literature.1 Much of the benefit is attributed to the antioxidant activity of wine. In contrast, concern was recently expressed about exposure to heavy metal ions in wines even at intakes of 250 mL/day, partly because they may promote oxidative stress. A brief review of heavy metals, their content in wine as well as in food, and their possible adverse effects on health is thus opportune. Cardiovascular disease is prevalent in the developed world and is rising in the developing world.3 Preventive measures that involve lifestyle are appropriate, with the possible inclusion of the consumption of wine. Trends and potential hazards of some heavy metals were updated recently,4 with a warning that intakes may still be on the increase, especially in the developing world. If the heavy metal content of wine is significant, the beneficial effect of wine to lessen cardiovascular risk may be outweighed by other adverse effects in the very long term.
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