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Table 2 No of subjects in each category and the prevalence (%) of the four protozoan taxa and combined protozoa by host sex, and region of origin

From: A decade of intestinal protozoan epidemiology among settled immigrants in Qatar

  No. Subjects B. hominis G. duodenalis Non-pathogenic amoebae E. histolytica/dispar Combined protozoa
Host sex
 Males 16991 4.20 1.66 1.73 0.26 6.81
 Females 12295 2.58 1.20 1.36 0.14 4.73
Region
 Arabian Pen. 1441 3.61 1.87 1.94 0.07 6.94
 Eastern Med. 2799 2.82 0.54 0.86 0.14 3.97
 Africa 5354 4.33 1.68 2.58 0.28 7.68
 Asia 10335 4.31 2.24 1.96 0.36 7.63
 Qatar 9357 2.16 0.72 0.73 0.04 3.49
  1. The statistical outputs were derived from minimum sufficient models, after first fitting for each species in turn, all variables into a single full factorial model, and then stepwise backward deletion of non-significant terms
  2. The χ2 values for goodness of fit of the minimum sufficient models for B. hominis, G. duodenalis, non-pathogenic amoebae, E. histolytica/dispar and combined protozoan infections were as follows: 1536.2 (df = 1705, P = 0.99), 1322.6 (df = 1801, P = 1), 1232.5 (df = 1728, P = 1), 847.0 (df = 1823, P = 1) and 1350.1 (df = 1420, P = 0.91), respectively. The importance of each factor in the final minimum sufficient model for each taxon is given in the text. Additional terms in the final models, that did not incorporate the presence/absence of parasites are not shown, but can be made available on request from the authors