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Featured researches published by Shalean M. Collins.


PLOS ONE | 2018

A novel household water insecurity scale: Procedures and psychometric analysis among postpartum women in western Kenya

Godfred O. Boateng; Shalean M. Collins; Patrick Mbullo; Pauline Wekesa; Maricianah Onono; Torsten B. Neilands; Sera L. Young

Our ability to measure household-level food insecurity has revealed its critical role in a range of physical, psychosocial, and health outcomes. Currently, there is no analogous, standardized instrument for quantifying household-level water insecurity, which prevents us from understanding both its prevalence and consequences. Therefore, our objectives were to develop and validate a household water insecurity scale appropriate for use in our cohort in western Kenya. We used a range of qualitative techniques to develop a preliminary set of 29 household water insecurity questions and administered those questions at 15 and 18 months postpartum, concurrent with a suite of other survey modules. These data were complemented by data on quantity of water used and stored, and microbiological quality. Inter-item and item-total correlations were performed to reduce scale items to 20. Exploratory factor and parallel analyses were used to determine the latent factor structure; a unidimensional scale was hypothesized and tested using confirmatory factor and bifactor analyses, along with multiple statistical fit indices. Reliability was assessed using Cronbach’s alpha and the coefficient of stability, which produced a coefficient alpha of 0.97 at 15 and 18 months postpartum and a coefficient of stability of 0.62. Predictive, convergent and discriminant validity of the final household water insecurity scale were supported based on relationships with food insecurity, perceived stress, per capita household water use, and time and money spent acquiring water. The resultant scale is a valid and reliable instrument. It can be used in this setting to test a range of hypotheses about the role of household water insecurity in numerous physical and psychosocial health outcomes, to identify the households most vulnerable to water insecurity, and to evaluate the effects of water-related interventions. To extend its applicability, we encourage efforts to develop a cross-culturally valid scale using robust qualitative and quantitative techniques.


Food and Nutrition Bulletin | 2018

“Men Are in Front at Eating Time, but Not When It Comes to Rearing the Chicken”: Unpacking the Gendered Benefits and Costs of Livestock Ownership in Kenya:

Sarah E. Dumas; Abena Maranga; Patrick Mbullo; Shalean M. Collins; Pauline Wekesa; Maricianah Onono; Sera L. Young

Background: Livestock can promote resilience in low-income communities through a number of pathways. Livestock development programs seek to amplify these benefits but often fail to consider the costs to intended beneficiaries or the effect of prevailing gender norms. Objective: To explore perceptions of livestock ownership among female smallholder livestock keepers in Nyanza Region, Kenya, and unpack how the distribution of livestock benefits and investments varies by gender within households. Methods: We used multiple ethnographic techniques, including Photovoice, a photo-elicitation interview method, focus group discussions, and pile sorts, with female smallholder livestock owners (n = 18) participating in an ongoing cohort study. Transcripts were coded using a combination of a priori constructs and grounded theory. Results: We found that livestock benefited households by providing financial security, food security, social benefits, and human time and labor savings. However, these benefits largely promoted long-term household resilience rather than immediate gains. Livestock ownership also had major costs to household time and labor, which were overwhelmingly borne by women and children. Despite this investment, women had limited livestock ownership rights, decision-making power, control over income, or access to meat. Conclusions: Our findings suggest that livestock ownership requires significant investments of household time and labor, which disproportionately burden women. Prevailing gender inequalities may therefore constrain the net benefit of livestock ownership for many women and their households in some contexts. Livestock development programs must assess both program benefits and costs at multiple levels to ensure that women’s participation in livestock production leads to improved individual and household outcomes.


The American Journal of Clinical Nutrition | 2017

Food insecurity, but not HIV-infection status, is associated with adverse changes in body composition during lactation in Ugandan women of mixed HIV status.

Elizabeth M. Widen; Shalean M. Collins; Hijab Khan; Claire Biribawa; Daniel Acidri; Winifred Achoko; Harriet Achola; Shibani Ghosh; Jeffrey K. Griffiths; Sera L. Young

BACKGROUND Body composition is an important indicator of nutritional status and health. How body composition changes during 12 mo of breastfeeding in HIV-infected women receiving antiretroviral therapy (ART) is unknown. OBJECTIVE We assessed whether HIV or food insecurity was associated with adverse postpartum body-composition changes in Ugandan women. DESIGN A cohort of 246 women [36.5% of whom were HIV positive (HIV+) and were receiving ART] were followed to 12 mo postpartum. Repeated measures included weight, fat mass, fat-free mass, midupper arm circumference, triceps skinfold thickness [which allowed for the derivation of arm muscle area (AMA) and arm fat area (AFA)], breastfeeding, and individual food insecurity. Longitudinal regression models were constructed to assess associations between HIV and food insecurity and changes in body composition over time. RESULTS At baseline, HIV+ women compared with HIV-negative women had a higher mean ± SD food-insecurity score (11.3 ± 5.5 compared with 8.6 ± 5.5, respectively; P < 0.001) and lower AMA (40.6 ± 5.7 compared with 42.9 ± 6.9 cm3, respectively; P = 0.03). Participants were thin at 1 wk postpartum [body mass index (BMI; in kg/m2): 22.9 ± 2.9]. From 1 wk to 12 mo, the weight change was -1.4 ± 4.4 kg. In longitudinal models of body-composition outcomes, HIV was not associated with body composition (all P > 0.05), whereas food insecurity was inversely associated with body weight and BMI at 6, 9, and 12 mo and with AFA at 6 and 12 mo (all P < 0.05). At 6 mo, every 1-unit increase in the food-insecurity score was associated with a 0.13-kg lower body weight (P < 0.001) and a 0.26-cm3 lower AFA (P < 0.01). CONCLUSIONS Body-composition changes are minimal during lactation. HIV is not associated with body composition; however, food insecurity is associated with changes in body composition during lactation. This trial was registered at clinicaltrials.gov as NCT02922829 and NCT02925429.


Global Public Health | 2018

‘I know how stressful it is to lack water!’ Exploring the lived experiences of household water insecurity among pregnant and postpartum women in western Kenya

Shalean M. Collins; Patrick Mbullo Owuor; Joshua Miller; Godfred O. Boateng; Pauline Wekesa; Maricianah Onono; Sera L. Young

ABSTRACT There is rapidly evolving literature on water insecurity in the general adult population, but the role of water insecurity during the vulnerable periods of pregnancy and postpartum, or in the context of HIV, has been largely overlooked. Therefore, we conducted an exploratory study, using Go Along interviews, photo-elicitation interviews, and pile sorts with 40 pregnant and postpartum Kenyan women living in an area of high HIV prevalence. We sought to (1) describe their lived experiences of water acquisition, prioritisation, and use and (2) explore the consequences of water insecurity. The results suggest that water insecurity is particularly acute in this period, and impacts women in far-reaching and unexpected ways. We propose a broader conceptualisation of water insecurity to include consideration of the consequences of water insecurity for maternal and infant psychosocial and physical health, nutrition, and economic well-being.


European Journal of Clinical Nutrition | 2018

HIV infection and increased food insecurity are associated with adverse body composition changes among pregnant and lactating Kenyan women

Elizabeth Widen; Irene Tsai; Shalean M. Collins; Pauline Wekesa; Joy China; Natalie R. Krumdieck; Joshua Miller; Sheri D. Weiser; Maricianah Onono; Sera L. Young

Background/objectivesBody composition changes markedly during reproduction. In sub-Saharan Africa, impacts of HIV infection on body composition across pregnancy and lactation in the context of Option B+ antiretroviral therapy are unknown. Therefore, we sought to evaluate the role of HIV infection on body composition during pregnancy and lactation among Kenyan women.Subjects/methodsA cohort of pregnant women (n = 333; 50.5% HIV+, receiving ART) were enrolled at seven clinics in western Kenya. Two prenatal (mean ± SD: 23.6 ± 4.4 and 33.4 ± 2.0 weeks gestation) and three postpartum (6, 14, and 36 weeks) measurements included: individual-level food insecurity, height, weight, fat mass (FM), and fat-free mass (FFM) by bioimpedance analysis (BIA), mid-upper arm circumference (MUAC), and triceps skinfold (TSF), allowing for AMA (arm muscle area) and AFA (arm fat area) derivation. Multivariable longitudinal regression models were used to relate HIV to body composition changes.ResultsIn longitudinal models, HIV-infected women had lower weight (ß = −3.0 kg, p = 0.003), fat mass (ß = −1.5 kg, p = 0.02), fat-free mass (ß = −1.5 kg, p = 0.01), TSF (ß = −2.6 mm, p < 0.001), AFA (ß = −3.9 cm3, p < 0.001), and MUAC (ß = −1.0 cm, p = 0.001), but not AMA (p = 0.34), across all observations. Food insecurity was inversely associated with AMA and MUAC postpartum (AMA ß-range = −0.47 to −0.92 cm3; MUAC ß-range = −0.09 to −0.15 cm, all p < 0.05).ConclusionsHIV infection was associated with lower weight, fat mass, fat-free mass, TSF, AFA, and MUAC values during pregnancy and lactation, while food insecurity was intermittently associated with body composition. This suggests that pregnant and lactating women living with HIV and food insecurity could benefit from nutritional support.


American Journal of Human Biology | 2018

Geophagic earths consumed by women in western Kenya contain dangerous levels of lead, arsenic, and iron

Joshua Miller; Shalean M. Collins; Moshood O. Omotayo; Stephanie L. Martin; Katherine L. Dickin; Sera L. Young

Geophagy is commonly reported by pregnant women and children, yet its causes and consequences remain poorly understood. Therefore, we sought to determine if geophagy could contribute micronutrients and/or be a source of heavy metal exposure by examining the elemental composition of earths consumed in Kakamega, Kenya.


Journal of Water and Health | 2016

Household water insecurity is associated with a range of negative consequences among pregnant Kenyan women of mixed HIV status

Natalie R. Krumdieck; Shalean M. Collins; Pauline Wekesa; Patrick Mbullo; Godfred O. Boateng; Maricianah Onono; Sera L. Young


Maternal and Child Nutrition | 2018

Measuring exclusive breastfeeding social support: Scale development and validation in Uganda

Godfred O. Boateng; Stephanie L. Martin; Shalean M. Collins; Barnabas Natamba; Sera L. Young


American Journal of Tropical Medicine and Hygiene | 2017

Evaluating Human Sensory Perceptions and the Compartment Bag Test Assays as Proxies for the Presence and Concentration of Escherichia coli in Drinking Water in Western Kenya

Yolanda M. Brooks; Shalean M. Collins; Patrick Mbullo; Godfred O. Boateng; Sera L. Young; Ruth E. Richardson


American Journal of Physical Anthropology | 2018

Schistosomiasis and hydration status: Schistosoma haematobium, but not Schistosoma mansoni increases urine specific gravity among rural Tanzanian women

Asher Y. Rosinger; Sera L. Young; Shalean M. Collins; Syeda Razia Haider; Pallavi Mishra; Honest T. Nagai; Mnyeshi Petro; Jennifer A. Downs

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Pauline Wekesa

Kenya Medical Research Institute

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Maricianah Onono

Kenya Medical Research Institute

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Godfred O. Boateng

University of Western Ontario

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Patrick Mbullo

Kenya Medical Research Institute

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Godfred O. Boateng

University of Western Ontario

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