Recommendation 5-3: Any BMI standard used for retention should not be more stringent than a standard used for accession.

ASTHMA

Asthma Trends in the General Population

Asthma is one of the most common chronic illnesses in the United States (Centers for Disease Control and Prevention, 2002). Table 5-4 illustrates that the rate of those who have ever experienced an asthma episode varies between 38 and 43 per 1,000 people in the population. Table 5-5 shows this rate according to age group and gender. The rate is the same in individuals ages 15 to 34 but higher in those under age 15. The rate for non-Hispanic blacks over age 15 is similar but slightly higher when compared with non-Hispanic whites and Hispanics. When reporting episodes experienced in the previous year, blacks report greater frequency (5 percent) than Hispanics (4 percent) (Centers for Disease Control and Prevention, 2004). In the group ages 15 to 34, 4 percent report current asthma symptoms with slightly higher rates during the winter months (7 percent). Women report a higher level of current symptoms (8 percent) than men (6 percent). CDC data from 1980 to the mid-1990s indicate that women were over twice as likely than men to be hospitalized for asthma (Centers for Disease Control and Prevention, 2004).

TABLE 5-4 Rates of Experiencing an Asthma Episode in the Past 12 Months Among Persons of All Ages: United States, 1997-2003

 

Rate per 1,000 Population (95% Confidence Interval)

Year

Crude Estimate

Age-Adjusteda

1997

41.8 (39.7-43.8)

41.5 (39.4-43.5)

1998

39.5 (37.4-41.7)

39.3 (37.2-41.5)

1999

38.6 (36.4-40.9)

38.5 (36.2-40.7)

2000

40.0 (37.7-42.2)

39.9 (37.6-42.1)

2001

43.2 (40.8-45.5)

43.1 (40.8-45.4)

2002

42.6 (40.2-44.9)

42.5 (40.2-44.9)

2003

38.7 (36.5-40.9)

38.7 (36.5-41.0)

aEstimates are age-adjusted to the 2000 projected U.S. standard population using three age groups: 0-14 years, 15-34 years, and 35 years and over.

SOURCE: Centers for Disease Control and Prevention (2004). Early release of selected estimates based on data from the January-March 2004 National Health Interview Survey (NHIS), Figure 15.1.



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