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Table 7 Prevalence of onchocerciasis nodules and OV16 antibodies among adult (≥ 20 years) males in suburban and rural villages

From: High prevalence of epilepsy in two rural onchocerciasis endemic villages in the Mahenge area, Tanzania, after 20 years of community directed treatment with ivermectin

Village/Strata Examined for nodules (REMO) Nodules OV16 tests
  N Median age (IQR) No. positive (%) Number screened (%) Positive percentage (95% CI) χ2-test (P-value)δ
Village
 Matumbala 35 38.5 (28.0–47.0) 1 (2.9) 34 (97.1) 32.3 (15.8–48.9)  
 Vigoi 54 43.8 (33.5–55.5) 1 (1.9) 53 (98.1) 62.3 (48.8–75.8) 7.41 (0.006)
 Mdindo 54 43.2 (30.8–53.5) 3 (5.6) 50 (92.6) 80.0 (68.5–91.5) 19.26 ( < 0.001)
 Msogezi 72 35.7 (28.6–50.2) 0 (0) 69 (95.8) 73.9 (63.3–84.5) 16.42 (< 0.001)
Strata
 Suburban 126 42.5 (31.9–53.6) 2 (1.6) 119 (94.4) 50.6 (39.9–61.3)  
 Rural 89 39.0 (28.9–51.9) 3 (3.4) 87 (97.6) 76.5 (68.7–84.2) 14.9 (< 0.001)
Total/Average 215 40.2 (29.6–52.9) 5 (2.3) 206 (95.8) 65.5 (59.0–72.1)  
  1. δMatumbala village was considered the baseline in all comparisons; REMO: Rapid epidemiological monitoring of onchocerciasis; IQR Inter quartile range