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Table 2 Associations between age and prevalence of microscopic parasitaemia, stratified by study site

From: Characterizing microscopic and submicroscopic malaria parasitaemia at three sites with varied transmission intensity in Uganda

Age group (years) Walukuba Kihihi Nagongera
Prevalence RR (95 % CI) p value Prevalence RR (95 % CI) p value Prevalence RR (95 % CI) p value
0.5– <2  6/247 (2.4 %) 0.36 (0.17–0.74) 0.005 14/294 (4.8 %) 0.43 (0.23–0.80) 0.007 42/263 (16.0 %) 0.51 (0.37–0.71) <0.001
2– <5  56/666 (8.4 %) Reference group   71/843 (8.4 %) 0.76 (0.56–1.05) 0.093 189/740 (25.5 %) 0.77 (0.65–0.91) 0.002
5– <11  74/936 (7.9 %) 0.90 (0.58–1.40)
0.637
159/1470 (10.8 %) Reference group 456/1380 (33.0 %) Reference group
≥18  25/803 (3.1 %) 0.37 (0.21–0.64) <0.001 23/765 (3.0 %) 0.28 (0.17–0.45) <0.001 44/853 (5.2 %) 0.15 (0.11–0.22) <0.001
  1. Relative risk is adjusted for repeated measures in the same study participant
  2. Reference group is defined as the group with highest prevalence, at all sites