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Table 4 Estimated odds ratios (ORs) of factors associated with the prevalence oflight and at least moderate intensity of infection obtained from hierarchical cumulative logit model adjusted for measurement errorfrom data collected on5624 people living in 50 villages of Samar Province, the Philippines, 2003–2004.

From: A cross-sectional study of the prevalence of intensity of infection with Schistosoma japonicumin 50 irrigated and rain-fed villages in Samar Province, the Philippines

Variable OR* (95% Bayesian credible interval)
Sex Age group  
Male ≤ 10 years Reference
  >10–16 years 6.10 (3.86 – 9.28)
  >16–40 years 8.76 (6.03 – 12.47)
  >40 years 3.53 (2.37 – 5.15)
Female ≤ 10 years Reference
  >10–16 years 8.59 (4.74 – 14.28)
  >16–40 years 5.98 (3.53 – 9.61)
  >40 years 3.46 (2.02 – 5.55)
Age group Sex  
≤ 10 years Female Reference
  Male 2.31 (1.40 – 3.61)
>10–16 years Female Reference
  Male 1.66 (1.01 – 2.61)
>16–40 years Female Reference
  Male 3.39 (2.32 – 4.80)
>40 years Female Reference
  Male 2.37 (1.54 – 3.58)
Occupation
Works most of the time on a rice farm Reference
Works sometimes on a rice farm 1.32 (0.82 – 2.02)
Works on a farm but never on a rice farm 0.42 (0.15 – 0.87)
Does not work on a farm 0.55 (0.30 – 0.90)
Does not work on a rice farm, may work on another type of farm 0.52 (0.37 – 0.72)
Irrigation
Rain-fed Reference
Irrigated 1.41 (0.50 – 3.21)
  1. OR*: the OR compares individuals at least lightly infected (>0 epg) to individuals not infected (0 epg) and individuals moderately or heavily infected (>100 epg) to individuals lightly infected or not infected (0–100 epg).