TABLE 1

Characteristics of the 838 Children Admitted to a PICU With Confirmed or Probable pH1N1 in the United States (April 15, 2009, to April 15, 2010)

Characteristicn (%)
Female gender353 (42.1)
Age groupa
    <6 mo71 (8.5)
    6–23 mo113 (13.5)
    2–4 y131 (15.6)
    5–12 y336 (40.1)
    13–17 y157 (18.7)
    18–20 y30 (3.6)
Hispanic ethnicityb229 (27.3)
Raceb
    White458 (54.7)
    Black168 (20.0)
    Asian, Hawaiian, or Pacific Islander45 (5.4)
    Native American8 (1.0)
    Other or not reported159 (19.0)
Underlying health conditions
    Previously healthy (none)251 (30.0)
    ≥1 underlying conditions587 (70.0)
    Chronic respiratory356 (42.5)
        Asthma258 (30.8)
    Neurologic or neuromuscular263 (31.4)
    Cardiovascular80 (9.6)
    Gastrointestinal or hepatic80 (9.6)
    Metabolic37 (4.4)
    Immune compromise33 (3.9)
        Current/active metastatic solid cancer6 (0.7)
        Current/active hematologic malignancy9 (1.1)
        Other immunosuppression (ie, transplant, HIV)18 (2.1)
    Renal10 (1.2)
    Hemoglobinopathy22 (2.6)
    Other chronic condition126 (15.0)
  • For an expansion of the data shown here, see Supplemental Table 5.

  • a The median age of the patients was 6 years (range: 6 days to 20 years).

  • b Race or ethnic group was reported in the clinical chart.