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Oregon EPHT Heart Attack Hospitalization Indicators

Heart Attack Indicator:   Hospitalizations

Measure : Age-adjusted heart attack 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.

 

Before EPHT,  there was no single heart attack surveillance system in place in the US. Mortality was currently the sole descriptor for national data for heart attacks. Estimates of incidence and prevalence of heart attacks and coronary heart disease were largely based on survey samples or large cohort studies. 

 

Tracking heart attack hospitalizations will provide more information than death certificates or surveys, and will help with examination of time and geographic trends in heart attack hospitalizations, and evaluation of differences by age, gender and race/ethnicity.

 

Age-adjusted hospitalization rates are presented below. These rates are adjusted to the age structure of the 2000 US population so that the fact that heart attacks are more prevalent among older people and that Oregon has a higher proportion of older people than the US in general do not make the rates for Oregon seem artificially high.

 

Heart attack hospitalizations in Oregon and the United States decreased between 2000 and 2006. In addition, heart attack hospitalization rates were significantly lower in Oregon compared to the rest of the country. The reasons for Oregon’s low heart attack rates are not clear.

 

Hospitalization rates were higher in rural compared to urban counties from 2000 to 2003, but became almost identical in 2004. This shows that the differences in  crude rates observed between rural and urban areas were mostly due to age differences that have been factored out here.

 

Table 1:  Age-adjusted annual heart attack hospitalization rates from 2000 to 2006, by year and county 

 

Graph 1:  Age-adjusted annual heart attack hospitalization rate for Oregon, by year from 2000 to 2006 

 

Graph 2:  Age-adjusted annual heart attack hospitalization rates for persons aged 35 and older, averaged from 2000 to 2006 

 

Map 1Age-adjusted annual heart attack hospitalization rates for Oregon counties 

 

___________________________________________________________________________________________________

 

Table 1: Age-adjusted annual heart attack 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

35

 

35

 

36

 

35

 

32

 

30

 

30

 

Baker

33

 

43

 

25

 

29

 

18

 

14

 

11

 

Benton

23

 

30

 

26

 

18

 

21

 

20

 

18

 

Clackamas

33

 

34

 

39

 

36

 

30

 

28

 

29

 

Clatsop

49

 

41

 

44

 

44

 

48

 

49

 

41

 

Columbia

40

 

42

 

46

 

46

 

41

 

37

 

42

 

Coos

45

 

50

 

58

 

55

 

46

 

46

 

44

 

Crook

53

 

38

 

47

 

43

 

30

 

29

 

36

 

Curry

47

 

35

 

33

 

33

 

23

 

26

 

30

 

Deschutes

46

 

43

 

37

 

35

 

31

 

33

 

32

 

Douglas

36

 

34

 

41

 

39

 

41

 

32

 

28

 

Gilliam

32

*

42

*

48

*

34

*

69

 

32

*

36

*

Grant

25

 

29

 

33

 

30

 

15

*

33

 

28

 

Harney

54

 

48

 

44

 

49

 

28

 

33

 

30

 

Hood River

56

 

45

 

50

 

25

 

42

 

35

 

43

 

Jackson

37

 

32

 

34

 

30

 

25

 

25

 

26

 

Jefferson

42

 

44

 

49

 

55

 

53

 

45

 

67

 

Josephine

52

 

54

 

46

 

46

 

39

 

38

 

31

 

Klamath

45

 

40

 

38

 

38

 

36

 

34

 

32

 

Lake

42

 

45

 

41

 

28

 

35

 

32

 

41

 

Lane

30

 

31

 

28

 

30

 

30

 

27

 

28

 

Lincoln

51

 

45

 

40

 

40

 

39

 

30

 

33

 

Linn

47

 

49

 

44

 

43

 

36

 

36

 

33

 

Malheur

29

 

27

 

26

 

23

 

18

 

16

 

6

 

Marion

36

 

33

 

35

 

31

 

32

 

32

 

32

 

Morrow

22

 

44

 

45

 

35

 

15

*

12

*

11

*

Multnomah

32

 

32

 

34

 

35

 

33

 

31

 

31

 

Polk

32

 

27

 

24

 

25

 

21

 

21

 

23

 

Sherman

15

*

53

*

63

*

42

*

48

*

66

 

35

*

Tillamook

44

 

45

 

39

 

32

 

23

 

33

 

40

 

Umatilla

27

 

29

 

28

 

24

 

19

 

10

 

10

 

Union

49

 

40

 

23

 

18

 

22

 

19

 

21

 

Wallowa

42

 

25

 

32

 

36

 

35

 

15

*

10

*

Wasco

40

 

40

 

42

 

40

 

40

 

49

 

35

 

Washington

25

 

27

 

33

 

36

 

33

 

31

 

31

 

Wheeler

12

*

6

*

74

*

36

*

28

*

41

*

24

*

Yamhill

42

 

34

 

48

 

41

 

31

 

40

 

34

 

___________________________________________________________________________________________________

Graph 1: Age-adjusted annual heart attack hospitalization rate for Oregon, by year from 2000 to 2006.

 

___________________________________________________________________________________________________

 

 

Graph 2: Age-adjusted annual heart attack hospitalization rates for persons aged 35 and older, averaged from 2000 to 2006.

 

County rates are shown as blue squares, while the 95% confidence intervals (CI) are indicated by black horizontal lines. The vertical dotted line indicates the Oregon average rate.  A county rate is considered statistically higher (or lower) than the Oregon average if the entire CI lies above (or below) the Oregon average. If the CI includes the Oregon average, the county rate is considered statistically similar to the Oregon average.  

 

 

 

___________________________________________________________________________________________________

 

 

Map 1 : Age-adjusted annual heart attack hospitalization rates for Oregon counties.

 

The rates are 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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