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Table 4 Impact of previous infections on G. duodenalis infection at the end of the trial

From: Giardia duodenalis infection in the context of a community-based deworming and water, sanitation and hygiene trial in Timor-Leste

  n Prevalence at final follow-up (95% CI) Relative risk 95% CI P-value
No infection at previous time points 1082 8.5 (7.0–10.3) reference   
Infection at one previous time point 254 26.3 (21.3–32.1) 2.05 1.47–2.86 < 0.001
Infection at two previous time points 90 53.3 (43.0–63.3) 3.81 2.62–5.56 < 0.001
Infection at three previous time points 26 53.8 (35.0–71.6) 3.88 2.13–7.07 < 0.001
Infection at four previous time points 12 66.7 (37.6–86.9) 5.55 2.55–12.10 < 0.001
  1. Notes: Effect estimates obtained using generalised linear mixed models, adjusted for age group and sex (fixed effects) and clustering at the community and household levels (random effects). The model included 1464 individuals in 438 households in 23 communities. Results in bold text are those significant at P < 0.05
  2. Abbreviation: CI, confidence interval