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Oregon EPHT Asthma Hospitalizations Indicator

Asthma Indicator:   Hospitalizations

Measure : Crude annual hospitalization rates

 

Data used in the calculation of these measures were collected by the Oregon Association of Hospitals and Health Systems for the Hospital Discharge Index (HDI). The HDI provides a central database of all Oregon hospital discharges for public health surveillance and hospital policy analysis. Information on emergency room visits, urgent care, outpatient surgery and clinic visits is not included in this database.

 

Tracking asthma hospitalizations will let Oregon EPHT  look more closely at the relationship between asthma and indoor and outdoor pollutants by examining trends, geographic or demographic differences, and targeting interventions to those most in need of care.   EPHT can also assist in monitoring the burden of asthma, asthma trends and how asthma affects the quality of life.

 

The crude rates presented here take the size of the population into account, and indicate the number of asthma hospitalizations per 10,000 people. Crude and age-adjusted rates for Oregon are very similar.

 

Between 2000 and 2006, the asthma hospitalization rate was 6 to 7 per 10,000. This is significantly lower than the asthma hospitalization rate for the United States, which was 17 per 10,000 in 2004. It is also slightly lower than the rates in neighboring West Coast states, such as Washington and California.

 

The significantly lower asthma hospitalization rate in Oregon, when compared to the United States, cannot be attributed to differences in asthma prevalence because the percentage of adults and children who ever had asthma was actually somewhat higher in Oregon than in the United States. This suggests that the lower asthma hospitalization rate in Oregon may have been due to less severe forms of asthma or better asthma management in Oregon compared to other parts of the United States.

 

The table, graph and map below show that asthma hospitalization rates varied among counties, with the average annual rate ranging from 3 per 10,000 in Hood River to 17 per 10,000 in Harney County. However, it is important to note that rate estimates for many counties can be based on a relatively small number of hospitalizations, resulting in unstable estimates. In the tables and graphs, rates based on less than 10 hospitalizations are flagged with an asterisk.

 

Table 1:   Crude annual asthma hospitalization rates from 2000 to 2006, by year and county

 

Graph 1:  Crude annual asthma hospitalization rate for Oregon, by year from 2000 to 2006. 

 

Graph 2:  Crude annual asthma hospitalization rates for counties, averaged from 2000 to 2006.

 

Map 1:  Crude annual asthma hospitalization rates for Oregon counties.

 

___________________________________________________________________________________________________

 

Table 1:  Crude annual asthma hospitalization rates from 2000 to 2006, by year and county. Rates based on less than 10 events are unstable and marked with an asterisk (*).

 

2000

2001

2002

2003

2004

2005

2006

Oregon

6.6

 

6.5

 

7.2

 

7.0

 

6.0

 

6.7

 

5.9

 

 

                             

Baker

8.4

 

4.2

*

4.2

*

6.7

 

2.4

*

5.5

*

3.1

*

Benton

2.3

 

3.1

 

2.5

 

3.0

 

3.4

 

2.2

 

3.0

 

Clackamas

4.9

 

4.6

 

6.0

 

5.0

 

4.1

 

4.5

 

3.9

 

Clatsop

10.1

 

9.3

 

9.2

 

7.8

 

7.7

 

9.5

 

8.0

 

Columbia

6.9

 

7.2

 

7.7

 

7.1

 

7.0

 

7.1

 

6.9

 

Coos

13.4

 

12.0

 

13.4

 

14.0

 

12.2

 

17.5

 

13.6

 

Crook

6.2

 

5.0

 

5.9

 

13.1

 

7.5

 

7.7

 

3.1

*

Curry

9.0

 

6.6

 

11.2

 

14.8

 

11.8

 

10.7

 

11.2

 

Deschutes

7.9

 

5.5

 

6.3

 

4.8

 

3.6

 

5.4

 

4.1

 

Douglas

11.4

 

11.4

 

15.7

 

13.6

 

10.1

 

10.3

 

8.9

 

Gilliam

10.5

*

15.9

*

0.0

*

11.1

*

0.0

*

27.9

*

5.6

*

Grant

1.3

*

4.0

*

2.7

*

6.7

*

12.2

*

5.5

*

2.8

*

Harney

6.6

*

29.7

 

39.6

 

30.5

 

8.5

*

8.7

*

8.7

*

Hood River

6.8

 

2.0

*

1.0

*

5.8

 

2.4

*

2.8

*

1.9

*

Jackson

6.4

 

7.4

 

7.4

 

9.7

 

7.0

 

10.1

 

7.9

 

Jefferson

11.0

 

13.3

 

12.7

 

12.2

 

11.6

 

8.5

 

6.9

 

Josephine

6.3

 

7.7

 

10.0

 

11.0

 

7.6

 

10.0

 

6.1

 

Klamath

7.0

 

7.3

 

8.9

 

8.2

 

10.3

 

10.2

 

6.8

 

Lake

8.1

*

18.7

 

12.1

*

16.2

 

12.2

*

8.3

*

8.0

*

Lane

4.6

 

5.3

 

6.3

 

5.3

 

5.9

 

6.0

 

5.7

 

Lincoln

6.3

 

8.4

 

5.2

 

5.1

 

8.6

 

8.3

 

5.6

 

Linn

12.2

 

10.3

 

8.8

 

8.0

 

7.0

 

7.7

 

7.4

 

Malheur

3.2

 

2.2

*

3.5

 

5.7

 

6.7

 

3.2

 

3.2

 

Marion

4.2

 

4.2

 

4.5

 

5.4

 

4.4

 

5.1

 

4.9

 

Morrow

8.1

*

8.9

 

8.6

 

7.7

*

6.9

*

1.7

*

0.9

*

Multnomah

8.0

 

7.8

 

8.2

 

7.4

 

6.9

 

8.0

 

7.7

 

Polk

2.6

 

2.8

 

2.8

 

5.1

 

2.6

 

4.0

 

4.5

 

Sherman

0.0

*

16.1

*

16.8

*

39.2

*

40.8

*

17.4

*

11.8

*

Tillamook

12.8

 

17.6

 

11.0

 

7.3

 

5.6

 

6.3

 

3.5

*

Umatilla

4.8

 

7.5

 

9.1

 

7.2

 

3.6

 

2.7

 

3.0

 

Union

9.0

 

7.4

 

6.1

 

15.5

 

10.7

 

3.7

*

5.3

 

Wallowa

5.5

*

5.6

*

12.7

*

9.9

*

10.1

*

8.6

*

10.2

*

Wasco

8.4

 

8.8

 

9.3

 

12.7

 

11.1

 

11.0

 

17.3

 

Washington

5.8

 

4.8

 

5.4

 

4.6

 

4.2

 

5.3

 

4.4

 

Wheeler

6.5

*

19.9

*

13.1

*

19.8

*

0.0

*

0.0

*

0.0

*

Yamhill

6.3

 

5.9

 

9.3

 

7.2

 

6.6

 

6.0

 

5.0

 

___________________________________________________________________________________________________

Graph 1:  Crude annual asthma hospitalization rate for Oregon, by year from 2000 to 2006.

 

___________________________________________________________________________________________________

Graph 2:  Crude annual asthma hospitalization rates for counties, averaged from 2000 to 2006, shown as differences from the Oregon average annual rate for the same time period. Error bars indicate 95% confidence intervals. Counties for which the confidence interval does not include the Oregon average, are statistically significantly different from the Oregon rate.

 

___________________________________________________________________________________________________ 

 

Map 1:  Crude annual asthma hospitalization rates for Oregon counties, shown in three statistical categories: higher than, similar to, or lower than the Oregon rate. Data are summarized for 2000 to 2006. Statistical significance was determined by comparing the 95% confidence interval of the county rate with the State rate.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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