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Table 1 Demographic characteristics of study population and prevalence of malaria in pregnancy in 2008–2011

From: Malaria in pregnancy in rural Gabon: a cross-sectional survey on the impact of seasonality in high-risk groups

Demographic characteristics  
n (number) 1661
Age* (in years) 23 (17–34;1634)
Age groups stratified  
(13–17, 18–22, 23–27, 28+; n) 17%, 32%, 22%, 29%; 1634
Parity* 1 (0–5;1545)
Parity stratified 29%, 22%, 49%; 1545
(NP, PP, MP; n)**  
Parity* in age group 1 0 (0–1; 264)
Parity* in age group 2 1 (0–2; 491)
Parity* in age group 3 2 (1–4; 341)
Parity* in age group 4 4 (2–7; 428)
Nullipara* (Age in years) 18 (15–34; 448)
Primipara* (Age in years) 20 (18–26; 333)
Multipara* (Age in years) 28 (22–38; 743)
Trimester*** 24%, 69%, 8%; 769
(1st, 2nd, 3rd; n)  
Malaria prevalence  
Year n Malaria pos. n (%) 95 % CI
2008 325 43 (13%) 10–17%
2009 391 54 (14%) 11–18%
2010 486 93 (19%) 16–23%
2011 444 73 (16%) 13–20%
2008–2011 1646 263 (16%) 14–18%
  1. Differences between the total number of enrolled women and the total number in specific groups are due to missing data for the particular variable.
  2. *Median (10–90% quantiles; n).
  3. **NP, Nullipara; PP, Primipara; MP, Multipara.
  4. ***Percentage of sample.