Health Impact & Field Studies

 

Study

Boisson, S. et al. 2010. Field assessment of a novel household-based water filtration device: a randomised placebo-controlled trial in the Democratic Republic of Congo. PloS One, September 2010

 

Overview

12-month RCT among 240 households (1144 persons) in remote, rural Congo

Outcome 

  • Use and Acceptability: Upon follow-up after 14 months, 76% met the study's definition of current users of LifeStraw® Family.
  • Impact on Diarrhea: “While the filter was effective in improving water quality, our results provide little evidence that it was protective against diarrhea. The moderate reduction observed nevertheless supports the need for larger studies that measure impact against a neutral placebo.”

 

Study

Dye TDV, Apondi R, Lugada E (2011) A Qualitative Assessment of Participation in a Rapid Scale-Up, Diagonally-Integrated MDG-Related Disease Prevention Campaign in Rural Kenya. PLoS ONE 6(1): e14551. doi:10.1371/journal.pone.0014551

 

Overview

The study examined motivational and experiential dimensions of participation in a novel, rapid, ‘‘diagonal’’ Integrated Prevention Campaign (IPC) in rural Kenya that provided prevention goods (including a LifeStraw® Family 1.0 water purifier)  as part of a CarePack, to motivate individuals to undergo voluntary HIV counseling . The CarePack and complementary services were provided to 47,000 people within one week, aimed at rapidly moving the region toward MDG achievement. Qualitative in-depth interviews (IDI) were conducted with 34 people randomly selected from IPC attendees consenting to participate.

Outcome

71% of study participants noted that the availability of the LifeStraw® Family water filters motivated their participation and satisfaction in the program.” People appreciated the opportunity to receive real benefit for diseases they experienced as important in their communities.”

 

Study

Kahn JG, Muraguri N, Harris B, Lugada E, Clasen T, et al. (2012) Integrated HIV Testing, Malaria, and Diarrhea Prevention Campaign in Kenya: Modeled Health Impact and Cost-Effectiveness. PLoS ONE 7(2): e31316. doi:10.1371/journal.pone.0031316

Overview

A 2008 community integrated prevention campaign in Western Province, Kenya, reached 47,000 individuals over 7 days, providing HIV testing and counseling, water filters (LifeStraw® Family), insecticide-treated bed nets, condoms, and for HIV-infected individuals cotrimoxazole prophylaxis and referral for ongoing care. The potential cost-effectiveness of a scaled-up integrated prevention campaign was modeled.

 

Outcome

The largest impact on both cost and health outcomes was from diarrhoeal cases and deaths averted as a result of the inclusion of the LifeStraw® Family technology in the CarePack.

  • Disease Averted: The model estimates that the Integrated Prevention Campaign averts 16.3 deaths: 4.31 from malaria, 6.81 from diarrhea, and 5.22 from HIV. There are an additional 1,304 averted episodes of malaria and 6,780 of diarrhea.
  • Cost Savings: An estimated $48,125 USD per 1,000 recipients was averted in medical treatment costs as a result of the provision of the water filter.

 

Study

Peletz, R. et. al (2012).  Assessing Water Filtration and Safe Storage in Households with Young Children of HIV Positive Mothers: A Randomized Control Trial in Zambia. PLOS ONE: 7(10): e46548.

 

Overview

12-month randomized, controlled field trial in Zambia among 120 households with children ,2 years (100 with HIV-positive mothers and 20 with HIV-negative mothers to reduce stigma of participation) to assess a high-performance water filter (LifeStraw® Family 1.0) and jerry cans for safe storage. Households were followed up monthly to assess use, drinking water quality and reported diarrhea (7-day recall) among children 2 years and all members of the household.

Outcome

  

  • Water Quality: “The quality of water stored in intervention households was significantly better than in control households (3 vs. 181 TTC/100 mL, respectively, p: 0.001).” 
  • Usage: “Filter use was high, with 96% (596/620) of household visits meeting the criteria for users’’
  • Health Impact: The intervention was associated with reductions in the longitudinal prevalence of reported diarrhea of 53% among children ,2 years (LPR = 0.47, 95% CI: 0.30–0.73, p = 0.001) and 54% among all household members (LPR = 0.46, 95% CI: 0.30–0.70,p,0.001) ‘’

 

Study

Walson, J. et. al. (2013). Evaluation of impact of long-lasting insecticide-treated bed nets and point-of-use water filters on HIV-1 disease progression in Kenya. AIDS 27: 00-000.

Overview

The study sought to determine whether the use of long-lasting insecticide-treated bed nets and simple point-of-use water filters (LifeStraw® Family 1.0) can delay HIV-1 disease progression at two HIV care sites in Kenya.  Participants were HIV-1 infected adults not yet meeting criteria for antiretroviral therapy. One group received the standard of care, while the other received longlasting insecticide-treated bed nets and water filters. Individuals were followed for up to 24 months.The primary outcome measures were time to CD4 count <350 cells/mm3 and a composite endpoint of time to CD4 <350 cells/mm3 and nontraumatic death. Time to disease progression was compared using Cox proportional hazards regression.

Outcome

 

  • Usage: 93% of participants in the intervention group reported using the filter at follow-up visits.
  • Health Impact Diarrhea: Participants in the intervention group had a 35% reduced risk of self-reported diarrhea over the previous 3 months (95% CI: 0.45-0.93).
  • Health Impact HIV: 27% risk reduction in HIV disease progression (95% CI: 0.57-0.95) and a 24% decrease in CD4 decline among HIV-1 infected adults already receiving cotrimoxazole and multivitamins ( 54 vs. 70 cells/ mm3/year, p¼0.03).

Malaria Research

IR Mapper is a tool that maps insecticide resistance. It consolidates reports of insecticide resistance in malaria mosquitoes onto filterable maps to inform vector control strategies.

irmapperhomepage

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For consumer purchases, visit Buy LifeStraw® to find a local retailer. For each consumer purchase, one school child in Africa will receive clean water for an entire school year. For large quantities purchased for public health settings, contact us

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