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Table 5 PPVs and NPVs of signs, symptoms and case definitions by season

From: Evaluation of case definitions to detect respiratory syncytial virus infection in hospitalized children below 5 years in Rural Western Kenya, 2009–2013

RSV seasons Case definition PPV %(95 % CI) NPV %(95 % CI)
Peak seasons    
  Cough 22.6(20.3,24.9) 91.4(86.1,96.8)
  Difficulty in breathing 26.3(23.1,29.6) 83.8(81.0,86.7)
  SARI 22.8(20.3,25.3) 83.2(78.9,87.5)
  hILI 26.5(21.1,31.9) 79.7(77.3,82.1)
  IMCI Non-severe pneumonia 19.8(15.1,24.5) 78.1(75.6,80.5)
  IMCI severe pneumonia 35.4(27.6,43.2) 80.2(77.9,82.4)
  IMCI very severe pneumonia 19.9(16.9,22.8) 76.6(73.3,79.9)
  Cough or difficulty breathing plus hypoxia, chest in-drawing or wheeze 28.3(24.6,31.9) 83.6(81.0,86.2)
Low seasons    
  Cough 7.7(6.6,8.8) 96.5(94.1,98.9)
  Difficulty in breathing 8.1(6.6,9.6) 93.5(92.1,94.9)
  SARI 7.8(6.6,9.0) 94.2(92.2,96.2)
  hILI 8.3(5.9,10.6) 92.9(91.8,94.1)
  IMCI Non-severe pneumonia 6.8(4.8,8.9) 92.5(91.3,93.7)
  IMCI severe pneumonia 8.4(4.9,12.0) 92.8(91.7,93.9)
  IMCI very severe pneumonia 7.6(6.1,9.1) 92.9(91.5,94.3)
  Cough or difficulty breathing plus hypoxia, chest in-drawing or wheeze 9.4(7.6,11.3) 94.1(92.9,95.3)