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Machine learning derived retinal pigment score from ophthalmic imaging shows ethnicity is not biology.
Nat Commun
January 2025
NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust & University College London Institute of Ophthalmology, London, UK.
Few metrics exist to describe phenotypic diversity within ophthalmic imaging datasets, with researchers often using ethnicity as a surrogate marker for biological variability. We derived a continuous, measured metric, the retinal pigment score (RPS), that quantifies the degree of pigmentation from a colour fundus photograph of the eye. RPS was validated using two large epidemiological studies with demographic and genetic data (UK Biobank and EPIC-Norfolk Study) and reproduced in a Tanzanian, an Australian, and a Chinese dataset.
View Article and Find Full Text PDFComparing fresh root yield and quality of certified and farmer-saved cassava seed.
Crop Prot
January 2025
International Institute of Tropical Agriculture (IITA), Dar es Salaam, Tanzania, Box 34441, Dar es Salaam, Tanzania.
Formal systems supporting the delivery of high-quality cassava seed are being established in several key cassava producing countries in Africa. Questions remain, however, about the value of certified cassava seed when compared to seed which is recycled multiple times, which is standard farmer practice. A study was therefore conducted to compare fresh cassava root yields of high-quality seed (HQS) versus farmer-saved (recycled) seed (FSS) for three widely grown improved cassava varieties in Tanzania namely: , and .
View Article and Find Full Text PDFSubsequent pregnancies in the IMPAACT 2010/VESTED Trial: high rate of adverse outcomes in women living with HIV.
J Acquir Immune Defic Syndr
October 2024
Harvard TH Chan School of Public Health, Boston, MA, USA.
Introduction: Women with HIV (WHIV) have higher risks of adverse pregnancy outcomes, particularly in the absence of antiretroviral treatment(ART), and timing of ART may impact risk.
Methods: In IMPAACT 2010 (VESTED), 643 pregnant WHIV in 9 countries were randomized 1:1:1 to initiate ART: dolutegravir (DTG)+emtricitabine(FTC)/tenofovir alafenamide(TAF); DTG+FTC/tenofovir disoproxil fumarate (TDF) or efavirenz (EFV)/FTC/TDF. We describe adverse pregnancy outcomes in women with a subsequent pregnancy during 50 weeks of postpartum follow-up: spontaneous abortion (<20 weeks), stillbirth (≥20 weeks), preterm delivery (<37 weeks) and small-for-gestational-age (SGA).
Caregivers' Perceived Threat Of Sickle Cell Disease Complications And Its Association With Hydroxyurea Use Among Children With Sickle Cell Disease In Dar Es Salaam, Tanzania.
Pediatric Health Med Ther
December 2024
Muhimbili University of Health and Allied Sciences, Dar-es-Salaam, Tanzania.
Purpose: Tanzania is the fifth country with the highest sickle cell disease (SCD) prevalence globally. Although hydroxyurea (HU) is available, only 25% of persons with SCD are reported to use it in Tanzania. Perceived disease threat is associated with medication usage in patients with chronic diseases.
View Article and Find Full Text PDFUsing waist circumference as a predictor of hypertension in Manzese, Dar es Salaam: a community-based cross-sectional study, 2023.
BMC Public Health
December 2024
Muhimbili University of Health and Allied Sciences, Dar es salaam, United Republic of Tanzania.
Introduction: It is estimated that 1.3 billion people in the world have hypertension and a large proportion of them are unaware. Waist circumference has emerged as Potential predictor of Cardiovascular Diseases (CVD) risk; however, fewer studies in Tanzania have evaluated its role in screening for CVD risk.
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