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Table 1 Factors independently associated with typhus group Rickettsiae (TGR) seropositivity in multivariate analysis, Reunion island, 2009 (n = 241)

From: Seroprevalence of typhus group and spotted fever group Rickettsia exposures on Reunion island

Rickettsia typhi IgG  1:64
Variables n % Adjusted PPR 95% CI
Age
 < 20 years 1/24 2.07 0.13* 0.01–0.91
 20–39 years 14/77 16.35 1
 40–59 years 19/102 13.44 0.81 0.40–1.64
 ≥ 60 years 5/38 10.28 0.51 0.18–1.42
Gender
 Female 19/136 11.69 0.74 0.40–1.35
 Male 20/105 17.19 1
Microregion**
 North 0/17 0.00 NA
 South 8/80 6.76 1
 West 20/78 23.22 2.53* 1.07–5.97
 East 11/66 17.74 2.21 0.85–5.70
  1. Data are numbers (n), weighted seropositive rates (%), adjusted prevalence proportion ratios (PPR), and 95% confidence intervals (95% CI)
  2. NA not assessed
  3. P values linked to variable names are given for overall design-based Pearson chi2 tests
  4. P values linked to PPR are given for within-each-category Wald tests
  5. P < 0.05
  6. ** P < 0.01