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

Table 3 Characteristics of hospital-acquired RVGE in children aged below 6 years in Japan during 2008–09 (N=13767)

Characteristics	Categories	N	n	% (95% CI)
Age at the time of hospitalization	≥18 months	6125	24	0.39 (0.25−0.58)
Age at the time of hospitalization	<18 months	6075	57	0.94 (0.71−1.21)
Hospitalization duration ¹	≥5 days	8128	74	0.91 (0.72−1.14)
Hospitalization duration ¹	<5 days	4053	6	0.15 (0.05−0.32)
	missing	19	1	5.26 (0.13−26.03)
Nurse allocation ^┼	N* =7	10573	78	0.74 (0.58−0.92)
Nurse allocation ^┼	N* =10	1627	3	0.18 (0.04−0.54)
Number of beds ^┼	≥30	7854	58	0.74 (0.56−0.95)
Number of beds ^┼	<30	4346	23	0.53 (0.34−0.79)
Status of hospital with isolation ward/room ^┼	With	10122	76	0.75 (0.59−0.94)
Status of hospital with isolation ward/room ^┼	Without	2078	5	0.24 (0.08−0.56)

¹Cut-off point of 5 days was decided based on mean hospitalization duration in Japanese infectious pediatric wards (4.7 days for children aged 1–4 years) [21].
Note: *1 nurse per 7/10 patients; N: number of all hospitalizations <6 years of age in the given category who are at risk of acquiring hospital-acquired RVGE; n: number of hospital-acquired RVGE subjects.
^┼Hospital data: Number of hospitals with N*=7: 6 hospitals and N*=10: 2 hospitals; Number of hospitals with ≥30 beds and <30 beds: 4 hospitals; Number of hospitals with isolation ward/room: 6 hospitals and without an isolation ward/room: 2 hospitals.

ISSN: 1471-2431