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IONIA County Asthma Statistics

  • 7.4% of adults 18 years of age and older reported currently having asthma. [2017-2019 Michigan Behavioral Risk Factor Survey]

  • The percent of children with asthma could not be reliably estimated. [2017-2019 Michigan Behavioral Risk Factor Survey]

  • The prevalence of persistent asthma among children less than 18 years of age on Medicaid was 5.2 percent, this is similar to the state prevalence.1,2 [2016 Michigan Medicaid Data Warehouse]

  • Care provided in emergency departments (ED) may reflect high-need care. However, it can also reflect care that can and should be provided in a patient's regular doctor’s office. Emergency department reliance (EDR) is the percentage of all outpatient doctor visits for asthma that occur in the ED. A higher EDR can reflect problems with access to coordinated care provided by a patient’s regular doctor. Due to the small number of asthma cases, the EDR percent in IONIA county was not calculated to protect the identity of persons hospitalized. [2016 Michigan Medicaid Data Warehouse]

  • There were 0 deaths caused by asthma between 2017 and 2019 in IONIA county. [2017-2019 Mortality Files]

  • There are about 17 hospitalizations each year in IONIA County for asthma. The rate of asthma hospitalization is 4.0 hospital stays per 10,000 people. 3 [2017-2019 Michigan Inpatient Data Base]

Table 1. Annual Average Numbers and Age-Adjusted Rates Per 10,000 of Asthma Hospitalizations
by Gender, Age and Race in IONIA County and Michigan, 2017-20193
[Michigan Inpatient Data Base]

Group Average Number of
Hospitalizations per Year
in IONIA County
IONIA County
Asthma Hospitalization Rate
per 10,000 People
Michigan Asthma
Hospitalization Rate
per 10,000 People
Male 6 ~ 8.1
Female 10 5.1 11.4
White 16 4.1 5.6
Black 1 ~ 30.9
0 to 17 6 ~ 11.2
18 and Older 10 2.0 4.8
All Ages 17 4.0 9.8
*Rates are age-adjusted to the 2000 US population. 2017-2019 yearly bridged-race population estimates provided by the National Vital Statistics System and maintained by the Centers for Disease Control and Prevention were used in calculations. For records missing data on race, race was assigned based on the hospitalized population within that data year.

~Insufficient data to compute a stable rate (Total count of events 1-19 between 2017 and 2019).

Table 2. Characteristics of Asthma Management for Children Enrolled in Medicaid with Persistent
Asthma, IONIA County and Michigan, Age ≤17 Years, 2016, Age-Adjusted1,2
[Michigan Medicaid Data Warehouse]

Characteristic of Asthma Management County Percent Michigan Percent
Two or More Office Visits for Asthma4 37.5% 45.1%
One or More Emergency Department Visit for Asthma5 10.7% 25.1%
Seven or More Prescription Refills for SABA6 % 8.8%
One or More Long Term Control Medication7 92.4% 81.0%
~Insufficient data to compute a stable rate.

If you have a specific data request, please contact Prudence Kunyangna at KunyangnaP@michigan.gov.

Learn more about Michigan’s Asthma Surveillance, Data and Reports.


Persistent asthma is defined according to the Health Plan and Employer Data and Information Set (HEDIS®) definition from the National Committee for Quality Assurance (NCQA). The criteria for this definition are: (1) ≥4 asthma medication dispensing events OR (2) ≥1 emergency department visits for asthma OR (3) ≥1 hospitalization for asthma OR (4) ≥4 outpatient visits for asthma and ≥2 asthma medication dispensing events.
Children enrolled in Medicaid are restricted to those who are continuously enrolled in Medicaid with full coverage and no other insurance.
Rates and percents are age-adjusted to the 2000 standard population.
The proportion of children with persistent asthma in Medicaid with two or more annual asthma office visits. Most of the visits were in a physician's office, but some home and urgent care visits may also be included in this measure.
The proportion of children with persistent asthma in Medicaid with one or more annual asthma emergency department visits.
Short-acting beta-agonist (SABA). The proportion of children with persistent asthma in Medicaid who have filled seven or more prescriptions for quick relief medications (SABAs) in a year – an indicator of overuse of this medication.
The proportion of children with persistent asthma in Medicaid who have filled one or more prescriptions for a long-term controller medication in a year.
Insufficient data to compute a stable rate (Total count of events 1-4).