1. bookVolume 58 (2021): Issue 2 (December 2021)
Journal Details
License
Format
Journal
eISSN
2199-577X
First Published
17 Aug 2013
Publication timeframe
2 times per year
Languages
English
access type Open Access

Cochran’s Q-Test on Soil Helminth Prevalence

Published Online: 30 Dec 2021
Volume & Issue: Volume 58 (2021) - Issue 2 (December 2021)
Page range: 169 - 185
Journal Details
License
Format
Journal
eISSN
2199-577X
First Published
17 Aug 2013
Publication timeframe
2 times per year
Languages
English
Summary

A study was made of the prevalence of nine geohelminth egg types in 184 soil samples from 16 recreational parks in Abuja metropolis, Nigeria. Cochran’s Q-test was applied to determine whether the difference in the proportions of the egg types found in the soil samples was significant. At a 5% significance level, it was found that the prevalence of the egg types was significantly different in the 184 soil samples from 16 parks. To identify which of the geohelminth eggs had a significantly larger mean proportional prevalence, a minimum required difference mean comparison technique was applied. The mean comparison test showed that Taenia and Coccocidia eggs were highly prevalent, with significantly larger mean proportions than the other analyzed geohelminth eggs in the 184 examined soil samples.

Keywords

Adegnika A.A., Agnandji S.T., Chai S.K., Ramharter M., Breitling L., Kendjo E., Issifou S., Yazdanbakhsh M., Kombila M., Kremsner P.G. (2007): Increased prevalence of intestinal helminth infection during pregnancy in a Sub-Saharan African community. Wien. Klin. Wochenschr 119: 712–716. Search in Google Scholar

Aoyama H., Hirata T., Sakugawa H., Watanabe T., Miyagi S., Maeshiro T., Chinen T., Kawane M., Zaha O., Nakayoshi T., Kinjo F., Fujita J. (2007): An inverse relationship between autoimmune liver diseases and strongyloides stercoralis infection. Am. J. Trop. Med. Hyg. 76(5): 972–976.10.4269/ajtmh.2007.76.972 Search in Google Scholar

Berger A., Gold R. (1973): Note on Cochran’s Q Test for the Comparison of Correlated Proportions. J. Am. Stat. Assoc. 68: 989–993. Search in Google Scholar

Bethony J., Brooker S., Albonico M., Geiger S.M., Loukas A., Diemert D., Hotez P.J. (2006): Soil-transmitted helminth infections: Ascariasis, trichuriasis, and hookworm. Lancet 367: 1521–1532.10.1016/S0140-6736(06)68653-4 Search in Google Scholar

Bhapkar V.P., Somes G.W. (1977): Distribution of Q When Testing Equality of Matched Proportions. J. Am. Stat. Assoc. 72: 658–661. Search in Google Scholar

Cochran W.G. (1950): The comparison of percentages in matched samples. Biometrika 37: 256–266.10.1093/biomet/37.3-4.256 Search in Google Scholar

Flohr C., Quinnell R.J., Britton J. (2009): Do helminth parasites protect against atopy and allergic disease? Clin. Exp. Allergy. 39(1): 20–32.10.1111/j.1365-2222.2008.03134.x19128351 Search in Google Scholar

Galaktionov K.V. (2017): Patterns and processes influencing helminth parasites of Arctic coastal communities during climate change. J. Helminthol. 91(4): 387–408.10.1017/S0022149X1700023228325173 Search in Google Scholar

Gayle S.S. (2010): A simulation study of the size and power of Cochran’s Q versus the standard Chi-square test for testing the equality of correlated proportions. An M.Sc Report. Kansas State University Manhattan, Kansas, USA. Search in Google Scholar

Goodman D., Haji H.J., Bickle Q.D., Stoltzfus R.J., Tielsch J.M., Ramsan M., Savioli L., Albonico M.A. (2007): Comparison of methods for detecting the eggs of ascaris, trichuris, and hookworm in infant stool, and the epidemiology of infection in zanzibari infants. Am. J. Trop. Med. Hyg. 76: 725–731.10.4269/ajtmh.2007.76.725 Search in Google Scholar

Isaac C., Turay P.N., Inegbenosun C.U., Ezekiel S.A., Adamu H.O., Ohiolei J.A. (2019): Prevalence of soil-transmitted helminths in primary school playgrounds in Edo State, southern Nigeria. Helminthologia 56(4): 282–295.10.2478/helm-2019-0028681863831708668 Search in Google Scholar

Karshima S.N. (2018): Prevalence and distribution of soil-transmitted helminth infections in Nigerian children: a systematic review and meta-analysis. Infect. Dis. Poverty., https://doi.org/10.1186/s40249-018-0451-210.1186/s40249-018-0451-2603668729983115 Search in Google Scholar

Khana J.S., Provenchera J.F., Forbesb M.R., Malloryc M.L., Lebarbenchond C., McCoye K.D. (2019): Parasites of seabirds: A survey of effects and ecological implications. Adv. Mar. Biol., https://doi.org/10.1016/bs.amb.2019.02.00110.1016/bs.amb.2019.02.001717276931229148 Search in Google Scholar

Lammie P.J., Fenwick A., Utzinger J. (2006): A blueprint for success: Integration of neglected tropical disease control programmes. Trends Parasitol. 22: 313–321.10.1016/j.pt.2006.05.00916713738 Search in Google Scholar

Lindquist H.D.A. Cross J.H. (2017): Helminths. In: Cohen, J., Powderly, W. G., and Opal S.M. (Eds.). Infectious Diseases, 4th ed., Vol II, 2017, p. 1763–1779. https://doi:10.1016/B978-0-7020-6285-8.00195-710.1016/B978-0-7020-6285-8.00195-7 Search in Google Scholar

Lustigman S., Prichard R.K., Gazzinelli A., Grant W.N., Boatin B.A., McCarthy J.S., Basáñez M.G. (2012): A Research Agenda for Helminth Diseases of Humans: The Problem of Helminthiases. PLoS Negl Trop Dis., https://doi.org/10.1371/journal.pntd.000158210.1371/journal.pntd.0001582333585422545164 Search in Google Scholar

Madansky A. (1963): Tests of Homogeneity for Correlated Samples. J. Am. Stat. Assoc. 58: 97–119. Search in Google Scholar

Maikai B.V., Umoh J.U., Ajanusi O.J., Ajogi I. (2008): Public health implications of soil contaminated with helminth eggs in the metropolis of Kaduna, Nigeria. J. Helminthol. 82: 113–118.10.1017/S0022149X0787422018201389 Search in Google Scholar

McNemar Q. (1947): Note on the sampling error of the difference between correlated proportions or percentages. Psychometrika. 12(2): 153–157.10.1007/BF0229599620254758 Search in Google Scholar

Ngwese M.M., Manouana P.G., Moure N.A.P., Ramharter M., Esen M., Adégnika A.A. (2020): Diagnostic Techniques of Soil-Transmitted Helminths: Impact on Control Measures. Trop. Med. Infect. Dis., https://doi:10.3390/tropicalmed502009310.3390/tropicalmed5020093734479532516900 Search in Google Scholar

Okeh U.M., Oyeka I.C.A., Igwenagu C. (2016): An alternative approach to Cochran Q test for dichotomous data. MOJ Pub. Health. 4(4): 114–117. Search in Google Scholar

Page A.L., Miller R.H., Keeney D.R. (1982): Methods of Soil Analysis Part 2: Chemical and Microbial Properties. Madison, Wisconsin: USA. Search in Google Scholar

Pal A. Chakravarty A.K. (2020): Genetics and Breeding for Disease Resistance of Livestock, 1st ed. Academic Press, USA, p. 193–208. https://doi.org/10.1016/B978-0-12-816406-8.00013-910.1016/B978-0-12-816406-8.00013-9 Search in Google Scholar

Pereira T.V., Patsopoulos N.A., Salanti G., Loannidis J.P.A. (2010): Critical interpretation of Cochran’s Q test depends on power and prior assumptions about heterogeneity. Res. Synth. Methods. 1: 149–161. Search in Google Scholar

Ruiz de Ybanez M.R., Garijo M.M., Goyena M., Alonso F. (2000): Improved methods for recovering eggs of Toxocara canis from soil. J. Helminthol. 74: 349–353.10.1017/S0022149X00000512 Search in Google Scholar

Sheskin D. (2011): Handbook of Parametric and Nonparametric Statistical Procedures, 5th ed. Chapman & Hall/CRC, London. Search in Google Scholar

Soulsby E.J.L. (1987): Larva Migrans in Perspective. In: Geerts S., Kumar V. and Brandt J. (eds) Helminth Zoonoses. Current Topics in Veterinary Medicine and Animal Science, Vol XLIII. Springer, Dordrecht, https://doi.org/10.1007/978-94-009-3341-5_2010.1007/978-94-009-3341-5_20 Search in Google Scholar

Vickers A.J. (2005): Parametric versus non-parametric statistics in the analysis of randomized trials with non-normally distributed data. BMC Med. Res. Methodol., https://doi.org/10.1186/1471-2288-5-3510.1186/1471-2288-5-35131053616269081 Search in Google Scholar

Vonk J. (2011): Methodology and Statistics for Linguistic Research. Cochran’s Q test. Available at: http://www.let.rug.nl/nerbonne/teach/rema-stats-methseminar/presentations/Vonk-Cochrans-Q-2011-June-7.pdf, assessed October, 2020. Search in Google Scholar

World Health Organisation [WHO] (2002): Prevention and Control of Schistosomiasis and Soil-Transmitted Helminths: Report of a WHO Expert Committee; Geneva Technical Report Series; World Health Organisation: Geneva, Switzerland, pp. 1–57. Search in Google Scholar

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