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Table 4 Factors associated with sub-microscopic parasitaemia if parasitaemic, stratified by study site

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

Factor Walukuba Kihihi Nagongera
Prevalence RR (95 % CI) p value Prevalence RR (95 % CI) p value Prevalence RR (95 % CI) p value
Age groups (years)
0.5– <2 14/18 (77.8 %) 1.22 (0.94–1.58) 0.14 23/34 (67.7 %) 0.95 (0.75–1.22) 0.71 70/97 (72.2 %) 1.11 (0.96–1.29) 0.15
2– <5 81/126 (64.3 %) 1.09 (0.89–1.33) 0.41 146/206 (70.9 %) 1.00 (0.90–1.12) 0.95 243/401 (60.6 %) 1.02 (0.91–1.13) 0.77
5– <11 95/165 (57.6 %) Reference group 336/485 (69.3 %) Reference group 533/933 (57.1 %) Reference group
≥18 99/119 (83.2 %) 1.43 (1.20–1.71) <0.001 140/163 (85.9 %) 1.25 (1.13–1.38) <0.001 354/393 (90.1 %) 1.65 (1.53–1.79) <0.001
Symptomatic malaria in prior 30 days
No 263/399 (65.9 %) Reference group 537/761 (70.6 %) Reference group 987/1562 (63.2 %) Reference group
Yes 26/29 (89.7 %) 1.36 (1.17–1.58) <0.001 108/127 (85.0 %) 1.27 (1.15–1.40) <0.001 213/262 (81.3 %) 1.42 (1.31–1.55) <0.001
  1. Relative risk is adjusted for repeated measures in the same study participant
  2. Excludes samples from enrollment visits, for which data on malaria diagnosis in past 30 days is missing