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Table 1 Prevalence (%), mean intensity (epg) and risk factors associated with S. mansoni infection

From: High prevalence of helminths infection and associated risk factors among adults living in a rural setting, central Kenya: a cross-sectional study

Category No. examined (N = 495) N (%) Prevalence (%) (95% CI) Mean intensity (epg) (95% CI) Multivariable logistic
aOR (95% CI) p value
Overall 495 (100) 33.5 (29.6–38.0) 131 (89–194)  
Village
 Kiratina 130 (26.3) 26.2 (19.6–35.0) 31 (20–48) Reference  
 Mbui Njeru 136 (27.5) 13.2 (8.6–20.4) 15 (8–25) 0.54 (0.27–1.12) 0.097
 Mianya A 118 (23.8) 45.8 (37.6–55.7) 164 (110–244) 2.09 (1.15–3.77) 0.015
 Mianya B 111 (22.4) 54.1 (45.5–64.2) 357 (197–646) 4.38 (2.02–9.48) <0.001
Gender
 Male 146 (29.5) 28.1 (21.6–36.4) 65 (39–106) Reference  
 Female 349 (70.5) 35.8 (31.1–41.2) 159 (102–249) 1.48 (0.92–2.37) 0.109
Age group
 18–29 123 (24.9) 38.2 (30.5–47.9) 123 (79–192)  
 30–41 198 (40.0) 30.3 (24.5–37.5) 65 (44–98)  
 42–53 110 (22.2) 30.0 (22.5–40.0) 87 (48–159)  
 54–65 52 (10.5) 42.3 (30.7–58.3) 511 (217–1201)  
 >65 12 (2.4) 33.3 (14.5–76.9) 62 (21–183)  
Marital status
 Married 368 (74.3) 34.0 (29.5–39.2) 139 (88–218) Reference  
 Unmarried 127 (25.7) 32.3 (25.1–41.6) 110 (53–230) 0.83 (0.51–1.35) 0.452
Education level
 No education 34 (6.9) 58.8 (44.2–78.3) 508 (201–1288) 2.31 (1.04–5.11) 0.039
 Primary 352 (71.1) 31.5 (27.0–36.8) 119 (75–188) Reference  
 Secondary 103 (20.8) 33.0 (25.0–43.5) 56 (36–88) 1.74 (1.02–2.96) 0.041
 College and above 6 (1.2) 16.7 (2.3–18.3) 4 (1–28) 0.74 (0.08–7.21) 0.797
Occupation
 Unemployed 4 (0.8) 25.0 (3.5–77.5) 54 (8–383)  
 Farming 444 (89.7) 34.2 (30.1–39.0) 137 (91–208)  
 Business 42 (8.5) 31.0 (19.6–48.9) 90 (37–220)  
 Government employed 5 (1.0) 0.0 0.0  
Type of wall
 Stone/bricks/cement 143 (28.9) 25.9 (19.6–34.2) 96 (29–321)  
 Clay/mud 195 (39.4) 29.7 (24.0–36.9) 85 (55–130)  
 Wood 129 (26.1) 47.3 (39.4–56.8) 184 (113–299)  
 Iron sheets 28 (5.7) 35.7 (21.5–59.2) 394 (114–1358)  
Source of water
 Piped/tap water 54 (10.9) 7.4 (2.9–19.2) 5 (1–18) 0.43 (0.10–1.83) 0.260
 Borehole/well 71 (14.3) 52.1 (41.6–65.2) 369 (164–834) 0.74 (0.28–2.00) 0.554
 Rainwater 6 (1.2) 66.7 (35.9–85.0) 792 (398–1576) 2.94 (0.42–20.58) 0.278
 Stream/river 35 (7.1) 34.3 (21.5–54.6) 88 (33–233) Reference  
 Canal 327 (66.1) 33.0 (28.3–38.5) 94 (63–139) 1.10 (0.48–2.53) 0.826
 Others 2 (0.4) 50.0 (7.0–55.0) 36 (5–256) 3.16 (0.15–65.63) 0.457