Siskiyou County Asthma Profile

This county profile may be missing graphs due to insufficient data. In addition, some data are combined into the Northern Counties group, which includes Lassen, Del Norte, Modoc, Plumas, Sierra, Siskiyou, and Trinity.

In Northern Counties, approximately 19,000 children and adults have been diagnosed with asthma.

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County Population

AgePopulation%
0-4 2,637 5.7
5-17 6,846 14.7
18-64 28,232 60.6
65+ 8,905 19.1
Total 46,620  

County Population

Race/Ethnicity1%
White 81.2
Black 1.3
Hispanic 8.8
Asian/PI 1.4
Other 7.2

datasource:

California Department of Finance, 2008 (2007 release)

Lifetime Asthma Prevalence,2 2011-2012

Percent with Lifetime Asthma (95% Confidence Interval3)

 AgeNorthern CountiesCalifornia
Children0-4 -- 9.7 (7.2-12.3)
5-17 -- 17.1 (15.5-18.7)
Adults18-64 15.1 (9.0-21.3) 14.0 (13.4-14.7)
65+ -- 12.0 (11.1-12.8)
Totals:0-17 -- 15.4 (14.0-16.7)
18+ 13.3 (8.4-18.1) 13.7 (13.1-14.3)
All Ages 13.7 (9.1-18.4) 14.1 (13.6-14.6)
datasource: California Health Interview Survey (CHIS), 2011-2012

Active Asthma Prevalence,4 2011-2012

Percent with Active Asthma (95% Confidence Interval3)

 AgeNorthern CountiesCalifornia
Children0-4 -- 6.3 (4.6-8.0)
5-17 -- 11.6 (10.2-13.0)
Adults18-64 10.2 (5.2-15.2) 7.6 (7.1-8.1)
65+ -- 8.2 (7.5-8.9)
Totals:0-17 -- 10.1 (9.0-11.3)
18+ 9.3 (5.3-13.3) 7.7 (7.3-8.2)
All Ages 8.5 (5.3-11.7) 8.3 (7.9-8.7)
datasource: California Health Interview Survey (CHIS), 2011-2012

Asthma Management Plans

National guidelines recommend that health care providers give all patients with asthma a written self-management plan. In Northern Counties, 26.9% (95% CI 20.9-32.9) of people with asthma have NOT received an asthma management plan from a health care provider.

datasource: CHIS, 2009

Asthma Risk Factors, 2009

Northern Counties Risk Factors

Risk FactorPercent (95% Confidence Interval)
Percent of adults who are current smokers 18.3 (11.5-25.2)
Percent of adults and children exposed to second-hand smoke in the home 14.9 (9.2-20.7)
Percent of adults who are obese7 (BMI>=30) 26.9 (20.9-32.9)
Percent of people below the Federal Poverty Level (Siskiyou County only) 14.5 (NA)
Unemployment Rate (Siskiyou County only) 14.8 (NA)
datasource: CHIS, 2009

Asthma Deaths,9 2008-2010

Number of Deaths Due to Asthma (N) and Age-Adjusted Rate9 (per 1,000,000 residents)

 Siskiyou CountyCalifornia
 AgeNRateNRate
Children0-17 0 -- 57 1.9
Adults18+ 2 -- 1,198 14.3
TotalsAll Ages 2 -- 1,255 11.1
datasource: California Death Statistical Master Files, 2008-2010

Asthma Emergency Department Visits,10 2010

Number of ED Visits Due to Asthma (N) and Age-Adjusted Rate11 (per 10,000 residents)

 Siskiyou CountyCalifornia
 AgeNRateNRate
Children0-4 17 60.4 30,344 109.7
5-17 18 26.9 42,112 59.0
Adults18-64 93 38.0 90,989 36.8
65+ 20 22.0 16,527 37.6
Totals:0-17 35 35.9 72,456 72.6
18+ 113 35.3 107,516 36.9
All Ages 148 35.5 179,972 46.1
datasource: Office of Statewide Health Planning and Development (OSHPD), 2010

Expected Source of Payment for Asthma ED Visits

Payment SourceSiskiyou CountyCalifornia
Medicare 20.3% 12.6%
Medi-Cal 43.2% 37.1%
Private 17.6% 31.1%
Other 18.9% 19.3%
datasource: Office of Statewide Health Planning and Development (OSHPD), 2010

Asthma Hospitalizations,12 2010

Number of Hospitalizations Due to Asthma (N) and Age-Adjusted Rate11 (per 10,000 residents)

 Siskiyou CountyCalifornia
 AgeNRateNRate
Children0-4 <5 -- 6,187 22.3
5-17 <5 -- 4,884 6.9
Adults18-64 9 -- 14,671 5.7
65+ 9 -- 6,054 20.7
Totals:0-17 7 -- 11,071 11.0
18+ 18 4.3 23,725 8.3
All Ages 25 5.0 34,796 9.0
datasource: Office of Statewide Health Planning and Development (OSHPD), 2010

Average Charges13 Per Asthma Hospitalization

 AgeSiskiyou CountyCalifornia
Children0-17 $14,220 $19,508
Adults18+ $15,663 $40,853
TotalAll Ages $15,259 $33,749
datasource: Office of Statewide Health Planning and Development (OSHPD), 2010

Expected Source of Payment for Asthma Hospitalizations

Payment SourceSiskiyou CountyCalifornia
Medicare 40.0% 29.4%
Medi-Cal 32.0% 35.7%
Private 20.0% 24.9%
Other 8.0% 10.0%
datasource: Office of Statewide Health Planning and Development (OSHPD), 2010

Hospitalization Rates Over Time

Age-Adjusted Asthma Hospitalizations per 10,000 Residents, Siskiyou County and California, 1998-2008

YearSiskiyou CountyCalifornia
1998 6.9 11.7
1999 6.7 12.1
2000 7.7 11.0
2001 5.8 10.5
2002 7.5 10.5
2003 8.7 11.1
2004 5.3 9.8
2005 6.2 9.9
2006 3.7 9.1
2007 4.2 8.6
2008 6.5 9.1

Data Source: datasource: Office of Statewide Health Planning and Development (OSHPD) , 1998- 2008.


Notes

  1. PI = Pacific Islander; Please see technical notes for more information on race/ethnicity categorizations.
  2. Lifetime asthma prevalence is the proportion of people in the population who have ever been diagnosed with asthma by a health provider.
  3. The 95% confidence interval (CI) is a range that expresses a level of certainty about an estimate based on the margin of error.
    The 95% CI means that we are 95 percent confident that this range contains the true population percent. A narrow CI means that there is less variability in the estimate and/or there is a larger sample size. A wide CI indicates more variability and/or a smaller sample size.
  4. Active asthma prevalence is the proportion of people in the population who have ever been diagnosed with asthma by a health provider and report that they still have asthma and/or report that they had an episode or attack within the past 12 months.
  5. Work-related asthma is asthma that is caused or triggered by conditions or substances in the workplace.
  6. Balmes J, Becklake M, Blanc P, et al. Environmental and Occupational Health Assembly, American Thoracic Society. American Thoracic Society Statement: Occupational Contribution to the Burden of Airway Disease. Am J Respir Crit Care Med. 2003;167:787-797; Lutzker L, Rafferty A, Brunner W, et al. Prevalence of Work-related Asthma in Michigan, Minnesota, and Oregon. Journal of Asthma. 2010;47:156-161.
  7. Obesity is defined as a body mass index (BMI) of 30 or greater.
  8. Data Sources for Asthma Risk Factors: Smoking — CHIS, 2009; Obesity — CHIS, 2009; Poverty Level — American Community Survey, 2007-2009; Unemployment Rate — State of California Employment Development Department, 2009
  9. An asthma death is a death where asthma was indicated as the underlying cause on the death certificate. The rate of asthma deaths is the number of deaths per 1,000,000 residents, age-adjusted to the 2000 U.S. population.
  10. An asthma ED visit is an admission to a licensed ED in California with the primary diagnosis of asthma. The rate of asthma ED visits is the number of visits per 10,000 residents, age-adjusted to the 2000 U.S. population.
  11. Population denominators for rates are from the California Department of Finance. All rates are age-adjusted to the 2000 U.S. population. Age-adjusted rates are modified to eliminate the effect of different age distributions in different populations. Rates based on numbers <20 are not reported.
  12. An asthma hospitalization is a discharge from a licensed acute care hospital in California with the primary diagnosis of asthma. The rate of asthma hospitalizations is the number of hospitalizations per 10,000 residents, age-adjusted to the 2000 U.S. population.
  13. Charges for asthma hospitalizations are the only type of data available to assess the costs of asthma in California counties. However, there are many other costs associated with asthma, including other types of health care utilization, medications, and indirect costs due to factors such as school and work missed.
  14. Healthy People 2010 (HP2010) is a set of national benchmarks for a wide range of health topics, including asthma. For more information on HP2010, visit www.healthypeople.gov.
  15. Outdoor air quality data—including exposures such as PM2.5, PM10, ozone, and traffic pollution—can be found online through the California Environmental Health Tracking Program’s Air Quality Data Query or on the California Air Resources Board website.

Further details about the data presented in this report can be found in the accompanying Technical Notes document.