Assessing bed net damage: comparisons of three measurement methods for estimating the size, shape, and distribution of holes on bed nets
| العنوان: | Assessing bed net damage: comparisons of three measurement methods for estimating the size, shape, and distribution of holes on bed nets |
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| المؤلفون: | Dyson Mwandama, Laura C. Steinhardt, James F Sutcliffe, Anna A. Minta, Joseph Chisaka, Don P. Mathanga, Keren Z. Landman, Kim A. Lindblade, Jodi L. Vanden Eng, Monica P. Shah |
| المصدر: | Malaria Journal, Vol 16, Iss 1, Pp 1-13 (2017) Malaria Journal |
| بيانات النشر: | Springer Science and Business Media LLC, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 0301 basic medicine, Malawi, Mosquito Control, lcsh:Arctic medicine. Tropical medicine, lcsh:RC955-962, 030231 tropical medicine, World health, Image analysis, lcsh:Infectious and parasitic diseases, 03 medical and health sciences, 0302 clinical medicine, parasitic diseases, Statistics, Range (statistics), Medicine, lcsh:RC109-216, Insecticide-Treated Bednets, Bed nets, Hole index, Measurement method, business.industry, Methodology, Bed net, Vector control, Malaria, 3. Good health, 030104 developmental biology, Infectious Diseases, Distribution (mathematics), Case-Control Studies, Parasitology, Physical durability, business, Malaria control, Field conditions |
| الوصف: | Background Measuring the physical condition of long-lasting insecticidal nets (LLINs) under field conditions is of great importance for malaria control programmes to guide decisions on how frequently to replace LLINs. Current guidelines by the World Health Organization Pesticide Evaluation Scheme (WHOPES) propose a proportionate hole index (pHI) for assessing LLIN condition by counting the number of holes the size of a thumb, fist, head, and larger than a head. However, this method does not account for irregular hole shapes or exact hole sizes which could result in inaccurate decisions about when to replace LLINs. Methods LLINs were collected during a 2013 health facility-based malaria case control study in Machinga District, Malawi. To evaluate the accuracy of the pHI, the physical condition of 277 LLINs was estimated by the WHOPES method and then compared with two more thorough measurement methods: image analysis of digital photographs of each LLIN side; and for 10 nets, ruler measurements of the length, width, and location of each hole. Total hole counts and areas per net were estimated by each method, and detailed results of hole shapes and composite pictures of hole locations were generated using image analysis. Results The WHOPES method and image analysis resulted in similar estimates of total hole counts, each with a median of 10 (inter-quartile range (IQR) 4–24 and 4–23, respectively; p = 0.004); however, estimated hole areas were significantly larger using the WHOPES method (median 162 cm2, IQR 28–793) than image analysis (median 13 cm2, IQR 3–101; p |
| تدمد: | 1475-2875 |
| DOI: | 10.1186/s12936-017-2049-8 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08a6551b58a14cc118d8a758c5247f82 https://doi.org/10.1186/s12936-017-2049-8 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....08a6551b58a14cc118d8a758c5247f82 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14752875 |
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| DOI: | 10.1186/s12936-017-2049-8 |