Browsing by Author "Parkes-Ratanshi, Rosalind"
Now showing 1 - 7 of 7
Results Per Page
Sort Options
Item Barriers to starting ART and how they can be overcome: individual and operational factors associated with early and late start of treatment(Tropical medicine & international health, 2010) Parkes-Ratanshi, Rosalind; Bufumbo, Leonard; Nyanzi-Wakholi, Barbara; Levin, Jonathan; Grosskurth, Heiner; Lalloo, David G.; Kamali, AnatoliDespite expanding access to antiretroviral therapy (ART) in Sub-Saharan Africa, there are few data on patients’ perceptions about starting ART to explore issues affecting decisions to start ART in eligible individuals during the ART roll out. Methods We studied patterns of ART uptake for 957 participants in a trial of cryptococcal disease prevention and performed a qualitative cross-sectional study about issues affecting decisions to start ART in this cohort. In-depth interviews (IDIs) were conducted with 48 participants who started ART after variable time on the trial. results Time to starting ART from trial enrolment decreased during the ART roll out (Median 83 days to 68 days). Multiple factors causing delay to ART were reported; awaiting home visit by service provider (P = 0.025), domestic issues (P = 0.028), moving from area (P £ 0.001) and fear of side effects (P = 0.013) were statistically significant. In the IDIs, fear of side effects was the strongest factor for delay and observation of health improvement in others on ART was the strongest inducement to start. Information from patients already taking ART was the most valued source of information. Conclusions This study provided novel information about factors encouraging people to start ART early; positive beliefs about ART were the most important. Whilst side effects of ART must not be downplayed, programmes should provide information in a balanced way to prevent unnecessary fear of starting ART. Those already receiving ART were found to be good advocates and should be utilised by ART programmes to educate others.Item Boosted Lopinavir vs Boosted Atazanavir in Patients Failing a NNRTI first line Regimen in an Urban Clinic in Kampala(Journal of the International AIDS Society, 2014) Laker, Eva; Mambule, Ivan; Nalwanga, Damalie; Musaazi, Joseph; Kiragga, Agnes; Parkes-Ratanshi, RosalindIn 2011 Uganda recommended boosted atazanavir (ATV/r) as the preferred PI for second line due to once daily dosing, replacing aluvia (LPV/r) [1,2]. The evidence was based on the BMS O45 trial, of LPV/r vs ATV/r was performed in a highincome setting, on patients with prior PI use and resistance testing [2,3]. There are no RCTs or observational studies comparing use of ATV/r with LPV/r in patients failing NNRTI first line antiretroviral therapy in sub-Saharan Africa [3,4]. The Infectious Diseases Institute (IDI) has a large second line cohort (1838). This aims to compare clinical, immunologic and virologic response of LPV/r versus ATV/r at IDI. Retrospective cohort analysis on routinely collected data of patients switched to second line with NRTI backbones TDF/3TC or FTC, AZT/3TC, ABC/3TC from January 2009 to December 2013. Students T-tests and Chi-square tests were used in this analysis. A total of 1286 (73.5% female) patients were switched to LPV/r 991 (77%) and ATV/r 295 (23%) (pB0.001). NRTI backbones were 760 on TDF/3TC (66.8% LPV/r vs 33.2% on ATV/r), 504 on AZT/3TC (93.3% vs 6.7%), and 22 on ABC/3TC (59% vs 41%). Median (IQR) time on first line for LPV/r was 21 (144) months and for ATV/r was 41 months (2268). Median CD4 (IQR) at switch to LPV/r was 181 cells/uL (66424) and to ATV/r was 122 (57238) (p50.001). A total of 366 patients had CD4 done at six months after switch and the mean (IQR) CD4 increase was 153 (54241) for LPV/r versus 116 (52171) for ATV/r (p0.232). Additionally, 304 had a CD4 at 12 months and the means were 172 (45272) for LPV/r vs 179 (60271) for ATV/r (p0.426). There was no significant difference in the mean increment by NRTI backbone or by stratifying to viral load (VL) at time of switch to VL B100,000 and ]100,000. Median (IQR) VL at switch was 61,000 (13,0002,030,000) LPV/r and 51,000 (14,000_151,000) ATV/r. 269 had a VL done in the first 12 months and 178/250 (71.2%) on LPV/r versus 16/19 (84.2%) on ATV/r were undetectable (p0.228). 259 (26%) LPV/r versus 33(11%) ATV/r had ]1 opportunistic infections on second line (pB0.001). This is an observational study based on our experience at IDI. Like elsewhere in Africa, there is no routine viral load testing, making it difficult to get sensitive analysis of data on ART efficacy within routine clinical practice. Nevertheless, this observational study is reassuring in terms of efficacy of both ATV/r and LPV/r for patients failing first line therapy in our setting.Item Cost-effectiveness of an interactive voice response system for improving retention in care and adherence to antiretroviral therapy among young adults in Uganda(BMC, 2024-09) Naggirinya, Agnes Bwanika; Nuwamanya, Elly; Nabaggala, Maria Sarah; Musinguzi, Francis; Nanungi, Annet; Waiswa, Peter; Rujumba, Joseph; Meya, David B; Parkes-Ratanshi, RosalindAbstract Background New interventions aimed at increasing access to and adherence to antiretroviral therapy among young people living with the human immunodeficiency virus (YPLHIV) are needed. This study assessed the cost-effectiveness of the call-for-life interaction voice response tool compared to that of the standard of care (SOC) for promoting treatment adherence and retention in care among YPLHIV in Western Uganda. This cost-effectiveness study used data from a randomized controlled trial and a decision-analytic Markov model to estimate the long-term outcomes and costs of the Call for Life-Interactive Voice Response (CFL-IVR) tool and the usual care from the Ugandan public payer perspective. The model was parameterized using primary data and the literature and adopted a 1-year Markov cycle. The main outcomes were mean annual costs, disability-adjusted life-years (DALYs), and the incremental cost-effectiveness ratio (ICER) in form of cost per DALY averted. The CLF-IVR was deemed cost-effective if the ICER was between 1% and 51% of Uganda’s gross domestic product. We conducted deterministic and probabilistic sensitivity analyses to assess the effect of adjusting parameter values on cost-effectiveness estimates. All costs were reported in 2021 US dollars, and a discount rate of 3% was applied to both costs and outcomes. Results The base case analysis showed that, from the Ugandan public payer perspective, the CLF-IVR led to more mean annual costs ($359 vs. $280) and averted more mean annual DALYs (15.78 vs. 11.09) than the SOC, leading to an ICER of $17 per DALY averted. The base-case results did not change significantly in the deterministic and probabilistic sensitivity analyses. The cost-effectiveness estimates were more responsive to uncertainties surrounding ART duration, viral load suppression rates, and discount rates. Conclusion The CLF-IVR may be a cost-effective intervention for promoting treatment adherence and retention in care among YPLHIV in Uganda and other low-income settings. Once implemented, similar interventions may lead to greater returns in encouraging adherence to ART and retention in care among YPLHIV and other vulnerable groups, and eventually favorable clinical outcomes. Trial registration NCT04718974 Registry: clinical Trials.gov https://ichgcp.net/nl/clinical-trials-registry/NCT04718974 (20 Jan 2021).Item Elevated Aspergillus-specific antibody levels among HIV infected Ugandans with pulmonary tuberculosis(BMC Pulmonary Medicine, 2017) Kwizera, Richard; Parkes-Ratanshi, Rosalind; Wiltshire, Christine Sekaggya; Musaazi, Joseph; Castelnuovo, Barbara; Kambugu, Andrew; Denning, David W.The incidence of tuberculosis (TB) is high among human immunodeficiency virus (HIV) infected Ugandans. Recent evidence suggests that Chronic Pulmonary Aspergillosis and Aspergillus sensitisation might be responsible for significant mortality in patients treated for tuberculosis in Uganda. We retrieved and tested paired serum aliquots for 101 HIV-TB co-infected patients at the beginning and week 24 of TB treatment. We tested samples for Aspergillus-specific immunoglobulin G (IgG) and immunoglobulin E (IgE) using ImmunoCAP®; and Aspergillus-specific IgG and total serum IgE using Immulite® immunoassays. We compared antibody levels between baseline and week 24, relating them to selected baseline characteristics.10% of the patients had elevated Aspergillus-specific IgE (Aspergillus sensitization) and Aspergillus-specific IgG antibodies were elevated in 9% of the patients at the end of TB treatment. There was a significant fall in the Aspergillus-specific IgG antibody levels between baseline and week 24 (P = 0.02). Patients with cluster of differentiation 4 (CD4) T-cell count <100 cells/μl and those who were not on anti-retroviral therapy at baseline had more elevated Aspergillus-specific IgG antibodies (P = 0.01, P = 0.03). The ImmunoCAP® Aspergillus-specific IgG antibody titres were higher at week 24 than baseline with more positives at week 24; even though the difference in means was small. However, this difference was statistically significant (P = 0.02). Pulmonary infiltrates were the commonest x-ray abnormality and only 5% of the patients had pulmonary cavities on chest x-ray at week 24.These results suggest that Aspergillus infection may complicate active pulmonary TB and further studies including fungal culture and thoracic imaging may now be indicated to measure the prevalence of pulmonary aspergillosis complicating tuberculosis.Item Leveraging interactive voice response technology to mitigate COVID-19 risk in refugee settlements in Uganda: Lessons learned implementing “Dial-COVID” a toll-free mobile phone symptom surveillance and information dissemination tool(https://doi.org/ 10.1371/journal.pone.0279373, 2023) Klabbers, Robin E.; Muwonge, Timothy R.; Pham, Phuong; Mujugira, Andrew; Vinck, Patrick; Borthakur, Sukanya; Sharma, Monisha; Mohammed, Numan; Parkes-Ratanshi, Rosalind; Celum, Connie; O’Laughlin, Kelli N.Persons living in refugee settlements in sub-Saharan Africa may be at increased risk for COVID-19 and experience barriers to accessing COVID-19 information. We aimed to evaluate the implementation of “Dial-COVID” a multi-lingual, toll free, telephone platform that uses interactive voice response (IVR) to track COVID-19 symptoms/exposure and disseminate COVID-19 health information in refugee settlements in Uganda. We hypothesized that IVR could provide an alternative way to screen for COVID-19 and communicate public health information to humanitarian populations when physical access and testing capacity were limited. Methods The Dial-COVID IVR platform was created in ten languages and advertised by community health workers in refugee settlements for participants to call into toll free. In a recorded IVR symptom survey, participants were screened for COVID-19 symptoms/exposures and based on their responses, received tailored public health messages about COVID-19 risk mitigation in accordance with Uganda Ministry of Health guidelines. Here we report the challenges and lessons learned implementing this research during the pandemic. Results Between February 2021 and March 2022, 15,465 calls were received by the Dial-COVID platform from all 31 refugee settlements in Uganda through which 6,913 symptom surveys were completed and 10,411 public health messages were disseminated in all study languages. Uptake of Dial-COVID fluctuated with the national COVID-19 caseload and was impacted by phone ownership and connectivity in refugee settlements. Intensified advertising efforts promoted Dial-COVID uptake. Flexibility to adapt IVR messages was contingent on translation capacity. Conclusion Refugees living in refugee settlements across Uganda accessed Dial-COVID to share and obtain COVID-19 information suggesting that IVR holds potential for rapid information dissemination and screening of humanitarian populations during future infectious disease outbreaks and may be a valuable tool for routine public health programs. IVR adaptation flexibility and reach are influenced by language constraints and by contextual factors related to platform access.Item Pregnancy in HIV Clinical Trials in Sub Saharan Africa: Failure of Consent or Contraception?(PLoS ONE, 2013) Ssali, Agnes; Namukwaya, Stella; Bufumbo, Leonard; Seeley, Janet; Lalloo, David G.; Parkes-Ratanshi, Rosalind; Kamali, AnatoliHigher than expected pregnancy rates have been observed in HIV related clinical trials in Sub-Saharan Africa. We designed a qualitative study to explore the factors contributing to high pregnancy rates among participants in two HIV clinical trials in Sub-Saharan Africa. Methods: Female and male participants enrolled in one of two clinical HIV trials in south-west Uganda were approached. The trials were a phase III microbicide efficacy trial among HIV negative women using vaginal gel (MDP); and a trial of primary prevention prophylaxis for invasive cryptococcal disease using fluconazole among HIV infected men and women in Uganda (CRYPTOPRO). 14 focus group discussions and 8 in-depth interviews were conducted with HIV positive and negative women and their male partners over a six month period. Areas explored were their experiences about why and when one should get pregnant, factors affecting use of contraceptives, HIV status disclosure and trial product use. Results: All respondents acknowledged being advised of the importance of avoiding pregnancy during the trial. Factors reported to contribute to pregnancy included; trust that the investigational product (oral capsules/vaginal gel) would not harm the baby, need for children, side effects that led to inconsistent contraceptive use, low acceptance of condom use among male partners. Attitudes towards getting pregnant are fluid within couples over time and the trials often last for more than a year. Researchers need to account for high pregnancy rates in their sample size calculations, and consider lesser used female initiated contraceptive options e.g. diaphragm or female condoms. In long clinical trials where there is a high fetal or maternal risk due to investigational product, researchers and ethics committees should consider a review of participants contraceptive needs/pregnancy desire review after a fixed period, as need for children, partners and health status of participants may alter over time.Item Prevalence and Factors Associated With Liver Fibrosis Among Adult HIV-Infected Patients Attending Urban and Rural Care Clinics in Uganda(Oxford University Press, 2020) Wekesa, Clara; Kirk, Gregory D.; Aizire, Jim; Benson, Eve-Marie; Karabarinde, Alex; Parkes-Ratanshi, Rosalind; Ocama, PonsianoLiver fibrosis is common among HIV-infected patients. Risk factors vary by location. Understanding this variation may inform prevention strategies. We compared the prevalence and correlates of liver fibrosis among HIV-infected patients attending care clinics in Uganda. Methods. This was a cross-sectional study involving 2030 HIV-infected patients attending care clinics in urban and rural Uganda. Liver fibrosis was defined as liver stiffness measurement (LSM) >7.1 KPa. Proportions and correlates of liver fibrosis were assessed and compared using logistic regression stratified by gender and site. Results. Prevalence of liver fibrosis was higher among participants in the rural clinic (15% vs 11%; P = .017). History of tobacco use (urban P = .022; rural P = .035) and serologic evidence of hepatitis C infection (HCV; urban P = .028; rural P = .03) was associated with liver fibrosis in all men. Elevated liver transaminases (urban P = .002; rural P = .028) and increasing age (urban P = .008; rural P = .052) were risk factors among all women. Tobacco use among women was only a risk factor in those attending the rural clinic (P = .003), and detectable HIV viral load (P = .002) for men in the urban clinic. Conclusions. Liver fibrosis is prevalent among HIV-infected persons in Uganda. HIV viral suppression and avoiding tobacco may be strategies to prevent liver fibrosis and cancer risk.