7 results on '"Bwalya D"'
Search Results
2. Self-Reported Cervical Cancer Screening Uptake Among Women of Reproductive Age in Zambia: Evidence from the 2021 Zambia Population-Based HIV Impact Assessment (ZAMPHIA) Survey
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Mwansa Ketty Lubeya PhD, Angela Sinyani MSc, Moses Mukosha MSc, Brianna Lindsay PhD, Enock Mulowa Mumbula MSc, Chinedu Agbakwuru MSIHPM, Bwalya Daka MBChB, Rebecca G. Nowak PhD, Akipu Ehoche MSc, and Gina Mulundu PhD
- Subjects
Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Background Despite Zambia implementing the World Health Organisation's (WHO) tri-pillar cervical cancer prevention goals 90-70-90 Prevent, Screen, and Treat, cervical cancer claims 2000 lives annually and reigns as the most common cancer among women, especially those living with HIV (WLHIV). Our study describes the national uptake of screening and treatment from the ZAMPHIA 2021 survey. Methods Utilising a two-stage cluster sampling approach, the study included participants aged 15 years and older across Zambia’s ten provinces. Data were collected on demographic traits, reproductive history, sexual behaviour, and cervical cancer prevention using a structured questionnaire, and HIV was diagnosed from biological samples. Women aged 15-49 were eligible for inclusion in the analysis. The primary outcome of interest was whether a woman self-reported being screened for cervical cancer. Sociodemographic characteristics were calculated for categorical variables using the SAS proc surveyfreq procedure, producing both raw and weighted estimates. The weighted estimates and their variance were generated using jackknife replicate weights for each record. Results Of the 8801 surveyed women, 22.2% reported undergoing cervical cancer screening, the majority being aged between 35-49 years. Cervical cancer screening uptake was more likely among compared to HIV negative counterparts (aOR = 3.92, 95% CI: 3.10, 4.95), those aged 25-34 years (aOR = 1.76, 95% CI: 1.42, 2.21) or 35-49 years (aOR = 2.65, 95% CI: 2.11, 3.33) than younger and those with 1-4 (aOR = 2.16, 95% CI: 1.54, 3.02) or more than 5 live births (aOR = 1.98, 95% CI: 1.37, 2.87) than none. Marital status, WLHIV, education, and parity were other factors significantly associated with screening. Conclusion We report low cervical cancer screening uptake compared to the 70% target of WHO. The WHO’s call for bolstered strategies and efforts to increase cervical cancer screening and treatment is timely and urgent. Therefore, ongoing messaging and health education among all women is key.
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- 2024
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3. Deformation of mild steel plates subjected to large-scale explosions
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Chung Kim Yuen, S., primary, Nurick, G.N., additional, Verster, W., additional, Jacob, N., additional, Vara, A.R., additional, Balden, V.H., additional, Bwalya, D., additional, Govender, R.A., additional, and Pittermann, M., additional
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- 2008
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4. Finding a needle in the haystack: the costs and cost-effectiveness of syphilis diagnosis and treatment during pregnancy to prevent congenital syphilis in Kalomo District of Zambia.
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Larson BA, Lembela-Bwalya D, Bonawitz R, Hammond EE, Thea DM, and Herlihy J
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- Adult, Child, Female, Health Care Costs, Humans, Mass Screening, Pregnancy, Pregnancy Complications, Infectious epidemiology, Pregnancy Complications, Infectious microbiology, Syphilis Serodiagnosis economics, Syphilis, Congenital epidemiology, Syphilis, Congenital microbiology, Zambia, Cost-Benefit Analysis, Pregnancy Complications, Infectious diagnosis, Prenatal Diagnosis, Syphilis, Congenital diagnosis
- Abstract
Background: In March 2012, The Elizabeth Glaser Pediatric AIDS Foundation trained maternal and child health workers in Southern Province of Zambia to use a new rapid syphilis test (RST) during routine antenatal care. A recent study by Bonawitz et al. (2014) evaluated the impact of this roll out in Kalomo District. This paper estimates the costs and cost-effectiveness from the provider's perspective under the actual conditions observed during the first year of the RST roll out., Methods: Information on materials used and costs were extracted from program records. A decision-analytic model was used to evaluate the costs (2012 USD) and cost-effectiveness. Basic parameters needed for the model were based on the results from the evaluation study., Results: During the evaluation study, 62% of patients received a RST, and 2.8% of patients tested were positive (and 10.4% of these were treated). Even with very high RST sensitivity and specificity (98%), true prevalence of active syphilis would be substantially less (estimated at <0.7%). For 1,000 new ANC patients, costs of screening and treatment were estimated at $2,136, and the cost per avoided disability-adjusted-life year lost (DALY) was estimated at $628. Costs change little if all positives are treated (because prevalence is low and treatment costs are small), but the cost-per-DALY avoided falls to just $66. With full adherence to guidelines, costs increase to $3,174 per 1,000 patients and the cost-per-DALY avoided falls to $60., Conclusions: Screening for syphilis is only useful for reducing adverse birth outcomes if patients testing positive are actually treated. Even with very low prevalence of syphilis (a needle in the haystack), cost effectiveness improves dramatically if those found positive are treated; additional treatment costs little but DALYs avoided are substantial. Without treatment, the needle is essentially found and thrown back into the haystack.
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- 2014
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5. Resource Utilization and Costs of Care prior to ART Initiation for Pediatric Patients in Zambia.
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Iyer HS, Scott CA, Lembela Bwalya D, Meyer-Rath G, Moyo C, Bolton Moore C, Larson BA, and Rosen S
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Objective. We estimated time to initiation, outpatient resource use, and costs of outpatient care during the 6 months prior to ART initiation for HIV-infected pediatric patients in Zambia. Methods. We enrolled 1,102 children who initiated ART at <15 years of age between 2006 and 2011 at 5 study sites. Of these, 832 initiated ART ≤6 months after first presenting to care at the study sites. Data on time in care and resources utilized during the 6 months prior to ART initiation were extracted from patient medical records. Costs were estimated from the provider's perspective and are reported in 2011 USD. Results. For the patients who initiated ART ≤6 months after presenting to care, median age at presentation to care was 3.9 years; median CD4 percentage was 13%. Median time to ART initiation was 26 days. Patients made, on average, 2.38 clinic visits prior to ART initiation and received 0.81 CD4 tests, 0.74 full blood count tests, and 0.49 blood chemistry tests. The mean cost of pre-ART care was $20 per patient. Conclusions. Zambian pediatric patients initiating ART ≤6 months after presenting to care do so quickly, utilize fewer resources than mandated by national guidelines, and accrue low costs.
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- 2014
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6. Uptake, outcomes, and costs of antenatal, well-baby, and prevention of mother-to-child transmission of HIV services under routine care conditions in Zambia.
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Scott CA, Iyer HS, Lembela Bwalya D, Bweupe M, Rosen SB, Scott N, and Larson BA
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- Adult, Anti-HIV Agents economics, Anti-HIV Agents therapeutic use, Case-Control Studies, Communicable Disease Control economics, Drug Therapy, Combination, Female, HIV Infections drug therapy, HIV Infections transmission, Health Resources economics, Health Resources statistics & numerical data, Humans, Infant, Infectious Disease Transmission, Vertical economics, Patient Acceptance of Health Care, Postnatal Care statistics & numerical data, Pregnancy, Prenatal Care economics, Treatment Outcome, Young Adult, Zambia, HIV Infections prevention & control, Infectious Disease Transmission, Vertical prevention & control, Postnatal Care economics
- Abstract
Background: Zambia adopted Option A for prevention of mother-to-child transmission of HIV (PMTCT) in 2010 and announced a move to Option B+ in 2013. We evaluated the uptake, outcomes, and costs of antenatal, well-baby, and PMTCT services under routine care conditions in Zambia after the adoption of Option A., Methods: We enrolled 99 HIV-infected/HIV-exposed (index) mother/baby pairs with a first antenatal visit in April-September 2011 at four study sites and 99 HIV-uninfected/HIV-unexposed (comparison) mother/baby pairs matched on site, gestational age, and calendar month at first visit. Data on patient outcomes and resources utilized from the first antenatal visit through six months postpartum were extracted from site registers. Costs in 2011 USD were estimated from the provider's perspective., Results: Index mothers presented for antenatal care at a mean 23.6 weeks gestation; 55% were considered to have initiated triple-drug antiretroviral therapy (ART) based on information recorded in site registers. Six months postpartum, 62% of index and 30% of comparison mother/baby pairs were retained in care; 67% of index babies retained had an unknown HIV status. Comparison and index mother/baby pairs utilized fewer resources than under fully guideline-concordant care; index babies utilized more well-baby resources than comparison babies. The average cost per comparison pair retained in care six months postpartum was $52 for antenatal and well-baby services. The average cost per index pair retained was $88 for antenatal, well-baby, and PMTCT services and increased to $185 when costs of triple-drug ART services were included., Conclusions: HIV-infected mothers present to care late in pregnancy and many are lost to follow up by six months postpartum. HIV-exposed babies are more likely to remain in care and receive non-HIV, well-baby care than HIV-unexposed babies. Improving retention in care, guideline concordance, and moving to Option B+ will result in increased service delivery costs in the short term.
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- 2013
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7. Chronic respiratory symptoms among workers at a limestone factory in Zambia.
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Bwalya D, Bråtveit M, and Moen BE
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- Chronic Disease, Cross-Sectional Studies, Extraction and Processing Industry, Humans, Zambia epidemiology, Air Pollutants, Occupational toxicity, Calcium Carbonate toxicity, Occupational Diseases chemically induced, Occupational Exposure adverse effects, Respiratory Tract Diseases chemically induced
- Abstract
Limestone processing is a global industry, but few studies have assessed respiratory health among limestone workers. At a limestone factory in Zambia, the authors studied 70 high-exposed workers from the production department, 40 medium-exposed from engineering, and 30 low-exposed from administration. A modified British Medical Research Council respiratory questionnaire was used for recording chronic respiratory symptoms. The prevalence of symptoms was highest among the production workers. After adjusting for age, smoking, previous jobs, and past respiratory diseases, the production workers still had a significantly increased relative risk for cough day and night, cough 4 to 6 times daily in a month, and cough with sputum. The results indicate that exposure to limestone dust is associated with increased prevalence of respiratory symptoms. Until newer technology is installed, proper use of personal protective equipments should be emphasized., (Copyright © 2011 Taylor & Francis Group, LLC)
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- 2011
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