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Table 2 Mean annual hospitalisation incidences per 1.000 children by age and risk-groups in children under two years of age with RSV bronchiolitis in Akershus, Norway, 1993–2000

From: Hospitalisations for respiratory syncytial virus bronchiolitis in Akershus, Norway, 1993–2000: a population-based retrospective study

 

Children <1 year

Children 1–2 years

Children 0–2 years

Yeara

Popd

Adm

Inc

Popd

Adm

Inc

Popd

Adm

Inc

All 93–94

4.027

70

17.4

4.195

16

3.8

8.222

86

10.5

All 94–95

3.999

53

13.3

4.192

25

6.0

8.191

78

9.5

All 95–96

3.994

112

28.0

4.132

30

7.3

8.126

142

17.5

All 96–97

4.055

80

19.7

4.143

22

5.3

8.198

102

12.4

All 97–98

4.154

115

27.7

4.242

57

13.4

8.396

172

20.5

All 98–99

4.178

70

16.8

4.350

15

3.4

8.528

85

10.0

All 99–00

4.127

120

29.1

4.391

37

8.4

8.518

157

18.4

All 93–2000

28.534

620

21.7

29.645

202

6.8

58.179

822

14.1

Prematureb 93–2000

1.999c

47

23.5

1.955c

17

8.7

3.954c

64

16.2

Trisomy 21 93–2000

      

52

8

153.8

  1. aStudy period February 5th, 1993 to January 31th, 2000
  2. bBorn at <37 weeks of gestational age
  3. cNumber of children born at <37 weeks of gestation and corrected for a mean infant mortality rate of 2.4% during the neonatal period
  4. dBackground population for selected risk groups
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BMC Pediatrics

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