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Table 2 Clinical and laboratory features of 325 febrile patients, Rio de Janeiro, March–April, 2013

From: Accuracy of clinical criteria and an immunochromatographic strip test for dengue diagnosis in a DENV-4 epidemic

  Dengue 4 (N = 148) Non dengue (N = 177) OR (95 % CI)
N % N %  
Clinical
 Exanthema 28 18.9 21 11.8 1.7 (0.9–3.2)
 Conjunctival hyperemia 75 50.6 72 40.6 1.5 (1–2.3)
 Lethargya 142 95.9 168 94.9 1.3 (0.4–3.6)
 Joint pain 110 74.3 128 72.3 1.1 (0.7–1.8)
 Pain 143 96.6 171 96.6 1.0 (0.3–3.4)
 Retro-orbital pain 105 70.9 124 70.0 1.0 (0.6–1.7)
 Nausea/vomiting 99 66.9 120 67.7 1.0 (0.6–1.5)
 Edemaa 3 2.0 4 2.2 0.9 (0.2–4.0)
 Liver enlargementa 4 2.7 6 3.3 0.8 (0.2–2.9)
 Persistent vomitinga 35 23.6 48 27.1 0.8 (0.5–1.4)
 Myalgia 134 90.5 161 90.9 0.9 (0.4–1.9)
 Abdominal tendernessa 47 31.7 68 38.4 0.7 (0.5–1.2)
 Bleedinga 12 8.1 25 14.1 0.5 (0.3–1.1)
 Headache 133 89.8 169 95.4 0.4 (0.2–1. 0)
Laboratory
 Leukopenia 95 64.1 33 18.6 7.8 (4.7–13.0)b
 Thrombocytopenia 17 11.4 8 4.5 2.7 (1.1–6.5)b
 Anti-dengue IgG 123 83.1 161 90.9 0.5 (0.3–1.0)
  1. OR odds ratio, CI confidence interval
  2. awarning signs; Leukopenia = leucocyte count <4,500cells/mm3; thrombocytopenia = platelet count <150,000 cells/mm3
  3. bsignificant odds ratio