Anna Larsen

Dr. Anna Larsen


Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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16 September 2019 in BMC Infectious Diseases
Verified
Journal Article
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ALAnna Larsen
Anna Larsen
VMVuyolwethu Magasana
Vuyolwethu Magasana
TDThu-Ha Dinh
Thu-Ha Dinh
NNNobubelo Ngandu
Nobubelo Ngandu
CLCarl Lombard
Carl Lombard
AGAmeena Goga
Ameena Goga
Background: Despite improved policies to prevent mother-to-child HIV transmission (MTCT), adherence to maternal antiretroviral therapy (ART) and infant Nevirapine prophylaxis (NVP) is low in South Africa. We describe ART adherence amongst a cohort of HIV-positive mothers and HIV-exposed but uninfected infants from 6 weeks until 18 months post-delivery and identify risk factors for nonadherence. Methods: Data were collected in 2012–2014 through a nationally representative survey of PMTCT effectiveness. Mother-infant pairs were enrolled during the infant’s first immunization visit at 6 weeks. Mothers and HIV-exposed infants (2811 pairs) were followed to 18 months at 3-month intervals. Mothers who self-reported being on ART at 6 weeks postpartum (N = 1572 (55.9%)) and infants on NVP at 6 weeks (N = 2370 (84.3%)) were eligible for this analysis and information about their adherence was captured at each interview they attended thereafter. We defined nonadherence within each 3-month interval as self-report of missing > 5% of daily ART/NVP doses, estimated adherence using a Cox survival curve with Andersen & Gill setup for recurring events, and identified risk factors for nonadherence with an extended Cox regression model (separately for mothers and infants) in Stata 13. Results are not nationally representative as this is a subgroup analysis of the follow-up cohort. Results: Amongst mothers on ART at 6 weeks postpartum, cumulative adherence to maternal ART until 18 months was 63.4%. Among infants on NPV at 6 weeks postpartum, adherence to NVP was 74.5%.. Risk factors for nonadherence to maternal ART, controlling for other factors, included mother’s age (16–24 years vs. ≥34 years, adjusted Hazard Ratio (aHR): 1.9, 95% CI: 1.4–2.5), nondisclosure of HIV status to anyone (nondisclosure vs. disclosure: aHR: 1.7, 95% CI: 1.3–2.1), and timing of ART initiation (initiated ART after delivery vs. initiated ART before delivery: aHR: 1.6, 95% CI: 1.3–2.0). Provincial variation was seen in nonadherence to infant NVP, controlling for other factors. Conclusion: Maintaining ART adherence until 18 months postpartum remains a crucial challenge, with maternal ART adherence among the six week maternal ART cohort below 65% and infant NVP adherence among breastfeeding infants in this cohort below 75%.This is gravely concerning, given the global policy shift to lifelong ART amongst pregnant and lactating women, and the need for extended infant prophylaxis amongst mothers who are not virally suppressed. Our findings suggest that young mothers and mothers who do not disclose their status should be targeted with messages to improve adherence, and that late maternal ART initiation (after delivery) increases the risk of maternal nonadherence.

29 December 2022 in Journal of Affective Disorders
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Journal Article
Closed access
ALAnna Larsen
Anna Larsen
JPJillian Pintye
Jillian Pintye
BOBen Odhiambo
Ben Odhiambo
NMNancy Mwongeli
Nancy Mwongeli
MMMary M. Marwa
Mary M. Marwa
GJGrace John-Stewart
Grace John-Stewart

18 June 2021 in BMC Health Services Research
Verified
Journal Article
Open access
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ALAnna Larsen
Anna Larsen
ATAlbert Tele
Albert Tele
MKManasi Kumar
Manasi Kumar
Background: In designing, adapting, and integrating mental health interventions, it is pertinent to understand patients’ needs and their own perceptions and values in receiving care. Conjoint analysis (CA) and discrete choice experiments (DCEs) are survey-based preference-elicitation approaches that, when applied to healthcare settings, offer opportunities to quantify and rank the healthcare-related choices of patients, providers, and other stakeholders. However, a knowledge gap exists in characterizing the extent to which DCEs/CA have been used in designing mental health services for patients and providers. Methods: We performed a scoping review from the past 20 years (2009–2019) to identify and describe applications of conjoint analysis and discrete choice experiments. We searched the following electronic databases: Pubmed, CINAHL, PsychInfo, Embase, Cochrane, and Web of Science to identify stakehold,er preferences for mental health services using Mesh terms. Studies were categorized according to pertaining to patients, providers and parents or caregivers. Results: Among the 30 studies we reviewed, most were published after 2010 (24/30, 80%), the majority were conducted in the United States (11/30, 37%) or Canada (10/30, 33%), and all were conducted in high-income settings. Studies more frequently elicited preferences from patients or potential patients (21/30, 70%) as opposed to providers. About half of the studies used CA while the others utilized DCEs. Nearly half of the studies sought preferences for mental health services in general (14/30, 47%) while a quarter specifically evaluated preferences for unipolar depression services (8/30, 27%). Most of the studies sought stakeholder preferences for attributes of mental health care and treatment services (17/30, 57%). Conclusions: Overall, preference elicitation approaches have been increasingly applied to mental health services globally in the past 20 years. To date, these methods have been exclusively applied to populations within the field of mental health in high-income countries. Prioritizing patients’ needs and preferences is a vital component of patient-centered care – one of the six domains of health care quality. Identifying patient preferences for mental health services may improve quality of care and, ultimately, increase acceptability and uptake of services among patients. Rigorous preference-elicitation approaches should be considered, especially in settings where mental health resources are scarce, to illuminate resource allocation toward preferred service characteristics especially within low-income settings.

19 May 2022 in The Lancet Psychiatry
Verified
Journal Article
Closed access
ALAnna Larsen
Anna Larsen
JPJillian Pintye
Jillian Pintye
MMMary M Marwa
Mary M Marwa
SWSalphine Watoyi
Salphine Watoyi
JKJohn Kinuthia
John Kinuthia
GJGrace John-Stewart
Grace John-Stewart

13 June 2020 in International Journal of STD & AIDS
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Journal Article
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ALAnna Larsen
Anna Larsen
JKJohn Kinuthia
John Kinuthia
HLHarison Lagat
Harison Lagat
JSJoseph Sila
Joseph Sila
FAFelix Abuna
Felix Abuna
JPJillian Pintye
Jillian Pintye
We assessed prevalence of human immunodeficiency virus (HIV) risk behaviors and depressive symptoms among adolescent girls and young women (AGYW) aged 15–24 years attending four public family planning clinics in Western Kenya from January to June 2019. Moderate-to-severe depression (MSD) was defined as a Center for Epidemiologic Studies Depression Scale (CESD-10) score ≥10. Among 487 AGYW, the median age was 22 years (interquartile range 20–23), and 59 (12%) AGYW reported MSD. MSD was more prevalent among AGYW without a current partner (p = 0.001) and associated with HIV risk factors including partner ≥10 years older, recent transactional sex, forced sex, intimate partner violence, and alcohol use (each p ≤ 0.005). Thirty-four percent of AGYW with MSD had a high HIV risk score corresponding to 5 to 15 incident HIV cases per 100 person-years. Overlapping high prevalence of depression and HIV risk among AGYW underscores the need for integrated mental health and HIV services in family planning clinics.

21 June 2020 in BMJ Open
Verified
Journal Article
Open access
PDF file
ALAnna Larsen
Anna Larsen
KWKate S Wilson
Kate S Wilson
JKJohn Kinuthia
John Kinuthia
GJG John-Stewart
G John-Stewart
BRBa Richardson
Ba Richardson
PKPamela Kohler
Pamela Kohler
Introduction Adolescent girls and young women (AGYW) in sub-Saharan Africa are at high risk of HIV acquisition. Pre-exposure prophylaxis (PrEP) demonstration projects observe that AGYW uptake and adherence to PrEP during risk periods is suboptimal. Judgemental interactions with healthcare workers (HCW) and inadequate counselling can be barriers to PrEP use among AGYW. Improving HCW competency and communication to support PrEP delivery to AGYW requires new strategies. Methods and analysis PrEP Implementation for Young Women and Adolescents Program-standardised patient (PrIYA-SP) is a cluster randomised trial of a standardised patient actor (SP) training intervention designed to improve HCW adherence to PrEP guidelines and communication skills. We purposively selected 24 clinics offering PrEP services under fully programmatic conditions in Kisumu County, Kenya. At baseline, unannounced SP ‘mystery shoppers’ present to clinics portraying AGYW in common PrEP scenarios for a cross-sectional assessment of PrEP delivery. Twelve facilities will be randomised to receive a 2-day training intervention, consisting of lectures, role-playing with SPs and group debriefing. Unannounced SPs will repeat the assessment in all 24 sites following the intervention. The primary outcome is quality of PrEP counselling, including adherence to national guidelines and communication skills, scored on a checklist by SPs blinded to intervention assignment. An intention-to-treat (ITT) analysis will evaluate whether the intervention resulted in higher scores within intervention compared with control facilities, adjusted for baseline SP scores and accounting for clustering by facility. We hypothesise that the intervention will improve quality of PrEP counselling compared with standard of care. Results from this study will inform guidelines for PrEP delivery to AGYW in low-resource settings and offer a potentially scalable strategy to improve service delivery for this high-risk group. Ethics and dissemination The protocol was approved by institutional review boards at Kenyatta National Hospital and University of Washington. An external advisory committee monitors social harms. Results will be disseminated through peer-reviewed journals and presentations. Trial registration number NCT03875950