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Table 2 Characteristics of the study population

From: Investigation of a possible malaria epidemic in an illegal gold mine in French Guiana: an original approach in the remote Amazonian forest

  Whole assessed population
N = 46
Mining site Others
N = 3
p value
Sophie
N = 26
Dagobert
N = 12
Repentir
N = 5
Sociodemographic data
 Population
  Estimated population in the mining site na 36 37 200 na  
  Proportion of population assessed na 72.2% 32.4% 2.5% na  
 Sex
  Male 37 (80.4%) 23 (88.5%) 9 (75%) 4 (80%) 1 (33.3%) 0.137
  Female 9 (19.6%) 3 (11.5%) 3 (25%) 1 (20%) 2 (66.7%)
 Place of birth
  Brazil 46 (100%) 26 (100%) 12 (100%) 5 (100%) 3 (100%) 0.042
   Maranhão 17 (37%) 12 3 0 2
   Para 12 (26.1%) 6 6 0 0
   Amapa 4 (8.7%) 1 1 2 0
   Other states 12 (26.1%) 7 2 2 1
   Missing data 1 (2.2%) 0 0 1 0
 Time in gold mining (in months)
  Average (sd) 73 (± 94) 92 (± 85) 53 (± 62) 26 (± 52) 145 (± 248)  
  Median [interquartile range] 48 [8–120] 78 [36–120] 30 [0.75–96] 5 [1–5] 3 [1–432]  
Medical data
 Malaria crises in the last 3 months (declared)
  At least one 21 (45.7%) 14 6 1 0 0.219
  None 22 (47.8%) 11 5 3 3
  Missing data 3 (6.5%) 1 1 1 0
  Malaria attack rate in the last 3 months na 53.8% [34.6–73] 50% [21.7–78.3] 20% [− 15.1 to 55.1] na  
 RDT
  Number of RDTs performed 13 7 4 1 1  
  Number of RDTs positive 2 1 Pf 1 non-Pf 0 0  
 PCR
  Number of PCR performed 43 25 11 5 2 0.403
  Number of PCR positive 19 15 2 1 1
  Prevalence [IC95%] 44.2% [29.4–59] 60% [40.8–79.2] 18.2% [− 4.7 to 40.7] a a
  Asymptomatics carriers 15 (78.9%) 12 (80%) 1 (50%) 1 (100%) 1 (100%)  
  1. aNot calculated because of sample size