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Table 1 Association between parasitaemia and fever

From: Clinical consequences of submicroscopic malaria parasitaemia in Uganda

  No parasitaemia Submicroscopic parasitaemia Microscopic parasitaemia
Association between parasitaemia and fevera
 Age 0.5–< 2
  Risk 37/293 (12.6%) 16/120 (13.3%) 25/71 (35.2%)
  RRb (95% CI) Reference group 1.02 (0.60–1.75) 2.72 (1.71–4.33)
  p value 0.08 < 0.01
 Age 2–< 5
  Risk 88/1158 (7.6%) 59/508 (11.6%) 81/393 (20.6%)
  RRb (95% CI) Reference group 1.42 (1.03–1.98) 2.56 (1.93–3.37)
  p value 0.03 < 0.01
 Age 5–10
  Risk 86/2153 (4.0%) 93/1267 (7.34%) 146/1379 (10.6%)
  RRb (95% CI) Reference group 2.01 (1.49–2.71) 2.93 (2.15–3.99)
  p value < 0.01 < 0.01
 Age 0.5–10
  Risk 211/3604 (5.6%) 168/1895 (8.9%) 252/1843 (13.7%)
  RRb (95% CI) Reference group 1.67 (1.37–2.03) 2.64 (2.16–3.22)
  p value < 0.01 < 0.01
 Age ≥ 18
  Risk 50/948 (5.2%) 48/679 (7.1%) 8/106 (7.6%)
  RRb (95% CI) Reference group 1.31 (0.23–0.85) 1.47 (0.70–3.06)
  p value 0.23 0.31
  1. aReported fever in prior 24 h or documented temperature of ≥ 38.0 °C at routine visit
  2. bAdjusted for repeated measures in the same study participant
  3. cExcludes participants who were diagnosed with malaria in the past 14 days or developed malaria in the next 7 days
  No parasitaemia Submicroscopic parasitaemia  
Association between parasitaemia and fever, excluding those with recent malariac
 Age 0.5–< 2
  Risk 37/284 (13.0%) 14/81 (17.3%)  
  RRb (95% CI) Reference group 1.32 (0.76–2.31)  
  p value 0.33  
 Age 2–< 5
  Risk 84/1100 (7.6%) 47/378 (12.4%)  
  RRb (95% CI) Reference group 1.52 (1.07–2.17)  
  p value 0.02  
 Age 5–10
  Risk 79/2034 (3.9%) 89/1161 (7.7%)  
  RRb (95% CI) Reference group 1.97 (1.48–2.63)  
  p value < 0.01  
 Age 0.5–10
  Risk 200/3418 (5.9%) 150/1620 (9.3%)  
  RRb (95% CI) Reference group 1.64 (1.34–2.01)  
  p value < 0.01  
 Age ≥ 18
  Risk 48/930 (5.2%) 47/672 (7.0%)  
  RRb (95% CI) Reference group 1.31 (0.85–2.05)  
  p value 0.23  
  1. aReported fever in prior 24 h or documented temperature of ≥ 38.0 °C at routine visit
  2. bAdjusted for repeated measures in the same study participant
  3. cExcludes participants who were diagnosed with malaria in the past 14 days or developed malaria in the next 7 days