Table 1 Crude and age-standardized rates (per 100,000 person-years) of laboratory-confirmed influenza A and B cases by certain socio-demographic characteristics (1993–2008)

Overall

18,559,978

1,404

7.6

7.2 - 8.0

7.2

6.5 - 7.9

445

2.4

2.2 - 2.6

2.2

1.5 - 3.0

<=1

478,951

323

67.4

60.5-75.2

94

19.6

16.0-24.0

2 to 4

741,193

68

9.2

7.2-11.6

32

4.3

3.1-6.1

5 to 9

1,292,298

58

4.5

3.5-5.8

46

3.6

2.7-4.8

10 to 14

1,333,125

62

4.7

3.6-6.0

64

4.8

3.8-6.1

15 to 24

2,581,745

68

2.6

2.1-3.3

41

1.6

1.2-2.2

25 to 44

5,379,985

142

2.6

2.2-3.1

57

1.1

0.8-1.4

45 to 64

4,227,965

115

2.7

2.3-3.3

31

0.7

0.5-1.0

65 to 74

1,290,068

66

5.1

4.0-6.5

7

0.5

0.3-1.1

75+

1,234,648

502

40.7

37.3-44.4

73

5.9

4.7-7.4

Sex

Female

9,412,486

758

8.1

7.5 - 8.6

7.4

6.3 - 8.4

245

2.6

2.3 - 3.0

2.4

1.4 - 3.5

Male

9,147,492

646

7.1

6.5 - 7.6

6.8

5.8 - 7.9

200

2.2

1.9 - 2.5

1.9

0.9 - 3.0

Rural

7,268,040

604

8.3

7.7 - 9.0

7.7

6.5 - 8.9

240

3.3

2.9 - 3.7

2.9

1.7 - 4.1

Urban

11,291,938

800

7.1

6.6 - 7.6

6.9

5.9 - 7.8

205

1.8

1.6 - 2.1

1.7

0.8 - 2.7

North

1,138,287

126

11.1

9.3 - 13.2

8.4

5.1 - 11.6

42

3.7

2.7 - 5.0

2.3

0.3 - 7.1

South

17,421,691

1,278

7.3

6.9 - 7.7

7.0

6.2 - 7.8

403

2.3

2.1 - 2.6

2.2

1.4 - 2.9

Q1 (lowest)

3,704,516

385

10.4

9.4 - 11.5

8.7

7.0 - 10.3

108

2.9

2.4 - 3.5

2.3

0.6 - 4.0

Q2

3,838,620

249

6.5

5.7 - 7.3

5.9

4.3 - 7.5

74

1.9

1.5 - 2.4

1.8

0.7 - 4.7

Q3

3,722,216

225

6.0

5.3 - 6.9

5.7

4.0 - 7.3

108

2.9

2.4 - 3.5

2.8

1.1 - 4.4

Q4

3,707,649

160

4.3

3.7 - 5.0

4.3

2.7 - 6.0

60

1.6

1.3 - 2.1

1.5

0.6 - 5.0

Q5 (highest)

3,315,922

135

4.1

3.4 - 4.8

4.4

2.6 - 6.1

48

1.4

1.1 - 1.9

1.3

0.4 - 5.7

Unknown

271,055

250

92.2

81.5 - 104.4

59.7

53.1 - 66.4

47

17.3

13.0 - 23.1

13.9

0.4 - 6.1