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Table 1 Prevalence and risk factors of Schistosoma mansoni among residence of fishing villages of north-western Tanzania

From: Co-infection with Schistosoma mansoni and Human Immunodeficiency Virus-1 (HIV-1) among residents of fishing villages of north-western Tanzania

Variable No. infected Prevalence ofS. mansoni(95% CI) Crude prevalence ratio (95% CI) Adjusted prevalence ratio (95% CI)
Overall 854 47.84 (40.41 – 56.60) ----- -----
Sex
Female 382 40.29 (32.43 – 50.00) 1 1
Male 472 56.14 (49.19 – 64.06)* 1.39 (1.26 – 1.54)** 1.27 (1.14 – 1.42)***
Age (in years)
21 – 30 365 53.18 (47.48 – 59.55)* 1.22 (1.99 – 1.48) 1.19 (0.98 – 1.45)
31 – 40 292 47.66 (38.38 – 59.19) 1.09 (0.99 – 1.19) 1.12 (0.92 – 1.37)
41 – 50 125 38.96 (29.80 – 50.93) 0.89 (0.76 – 1.04) 0.91 (0.72 – 1.13)
51 – 55 72 43.71 (35.49 – 53.83) 1 1
Marital status
Married 591 47.20 (36.04 – 61.83) 1 1
Single 263 48.63 (29.60 – 79.87) 1.03 (0.82 – 1.29) 1.05 (0.95 – 1.16)
Education level
Literate 564 49.04 (43.27 – 55.59) 1 1
Illiterate 290 45.44 (34.83 – 59.28) 0.93 (0.91 – 0.94) 0.98 (0.88 – 1.08)
Occupation
SME 129 44.14 (36.14 – 53.91) 1 1
Peasants 561 45.11 (37.98 – 53.58 1.02 (0.89 – 1.16) 1.06 (0.86 – 1.24)
Fishing 164 66.28 (55.77 – 78.78)* 1.52 (1.42 – 1.59)** 1.27 (1.06 – 1.53)***
Village of residences
Igombe 176 40.42 (29.82 – 54.78) 1 1
Igalagala 141 55.47 (39.08 – 78.72)* 1.37 (1.31 – 1.44)** 1.31 (1.12 – 1.52)***
Kayenze 351 54.21 (42.96 – 68.38)* 1.34 (1.25 – 1.44)** 1.32 (1.15 – 1.51)***
Sangabuye 186 41.24 (26.34 – 64.58) 1.02 (0.88 – 1.78) 1.06 (0.89 – 1.25)
Duration of residences (in years)
3 – 5 152 50.16 (43.42 – 57.94) 1 1
6 – 10 169 50.21 (38.90 – 64.79) 1.01 (0.80 – 1.25) 1.01 (0.86 – 1.18)
11 – 20 187 49.76 (38.92 – 63.61) 0.98 (0.85 – 1.16) 1.01 (0.88 – 1.16)
≥21 346 48.69 (43.06 – 55.06) 0.97 (0.92 – 0.99) 0.96 (0.85 – 1.09)
CD4 + cell counts/μL
<350 28 38.36 (28.63 – 51.38) 1 -----
≥350 22 44.89 (28.96 – 69.61) 1.17 (0.91 – 1.51) -----
HIV-1 sero-status
Negative 804 48.12 (41.04 – 56.43) 1 1
Positive 50 39.52 (27.64 – 56.49) 0.92 (0.78 – 1.09) 1.01 (0.84 – 1.21)
  1. *P < 0.001 from χ2; **P < 0.001 and ***P < 0.001 from binomial family model.