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Table 2 Proportion of RVGE diagnosed in hospitalized children (ICD10 codes and RV rapid test kits) in Japan during 2008–09

From: The burden of rotavirus gastroenteritis and hospital-acquired rotavirus gastroenteritis among children aged less than 6 years in Japan: a retrospective, multicenter epidemiological survey

Age group

Proportion of RVGE among all hospitalizations (n/N; 95% CI)

Proportion of RVGE among all acute GE hospitalizations (n/N; 95% CI)*

Proportion of hospital-acquired RVGE among RVGE (n/N; 95% CI)

Based on ICD code and kit results

Based on kit test results

<2 years 1

4.9% (409/8285; 4.5−5.4)

41.2% (409/993; 38.1−44.3)

55.0% (398/723; 51.3−58.7)

15.2% (62/409; 11.8−19.0)

2−<4years

5.8% (191/3265; 5.1−6.7)

47.6% (191/401; 42.6−52.6)

69.7% (186/267; 63.8−75.1)

7.9% (15/191; 95% CI: 4.5−12.6)

4−<6 years

2.9% (65/2213; 2.3−3.7)

26.0% (65/250; 20.7−31.9)

47.2% (60/127; 38.3−56.3)

6.2% (4/65; 95% CI: 1.7−15.0)

<5 years 2

5.0% (643/12771; 4.7−5.4)

41.7% (643/1542; 39.2−44.2)

58.3% (625/1072; 55.3−61.3)

12.4% (80/643; 10.0−15.2)

<6 years 3

4.8% (665/13767; 4.5−5.2)

40.5% (665/1644; 38.1−42.9)

57.7% (645/1118; 54.7−60.6)

12.2% (81/665; 9.8−14.9)

  1. Note: 1<2 is due to the highest disease burden in this age group; 2<5 is to make it possible to compare with the result from other developed countries; 3<6 years is to align with Japanese schooling system (children start elementary education at the age of 6 years).
  2. *Both indicate the same proportion.
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BMC Pediatrics

ISSN: 1471-2431

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