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Table 1 Demographic characteristics: comparison of patients with and without asthma (n = 473)

From: Asthma in patients hospitalized with pandemic influenza A(H1N1)pdm09 virus infection–United States, 2009

Characteristic

Patients with asthma

Patients without asthma

P-Value*

 

No. (%) (n = 137)

No. (%) (n = 336)

 

Female

81 (59)

175/334 (52)

0.07

Median age in years (range)

27 (3 – 80)

30 (2 – 87)

0.15

Age 2–17 years

54 (39)

100 (30)

0.04

Age group

  

0.08

 2–9 years

28 (20)

54 (16)

0.26

 10–17 years

26 (19)

46 (14)

0.15

 18–49 years

58 (42)

160 (48)

0.30

 ≥50 years

25(18)

76 (23)

0.29

Race and ethnicity

  

0.17

 Non-Hispanic White

47 (34)

137 (41)

0.19

 Black

40 (29)

60 (18)

<0.01

 Hispanic

28 (20)

78 (23)

0.51

 Unspecified

15 (11)

40 (12)

0.77

 Other

7 (4)

18 (5)

0.91

  1. *P-Values stratified by age-group.
  2. Other race and ethnicity includes Asian, Native Hawaiian or Pacific Islander, American Indian or Alaska Native and Multiracial.