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MICH-27.1 Data Details

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MICH-27.1 Reduce the proportion of children aged 8 years with cerebral palsy born low birth weight (less than 2,500 grams)

About the Data

Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.

Data Source: 
Autism and Developmental Disabilities Monitoring Network
Changed Since the Healthy People 2020 Launch: 
Yes
Measure: 
percent
Baseline (Year): 
50.0 (2006)
Target: 
45.0
Target-Setting Method: 
10 percent improvement
Target-Setting Method Justification: 
The default target-setting method was chosen as there are limited data for modelling projections and there are no existing national programs/regulations/policies/laws related specifically to birth weight and cerebral palsy to use for setting a specific target method and estimate.
Numerator: 

Number of 8-year-old children with cerebral palsy born low birth weight (<2500 grams)

Denominator: 

Number of 8-year-old children with cerebral palsy born in surveillance areas with birth weight information

Comparable Healthy People 2010 Objective: 
Adapted from HP2010 objective
Data Collection Frequency: 
Periodic
Methodology Notes: 

    Children with cerebral palsy included in this objective are those with birth weight information available through linkage with birth certificates. Children with cerebral palsy with a documented post-neonatal (>28 days after birth to age 8 years) etiology are included in this objective.

    The Autism and Developmental Disabilities Monitoring (ADDM) Network provides reliable, population-based prevalence estimates of the number of school-aged children with cerebral palsy and other developmental disabilities over time and is the only program in the US conducting active surveillance for serious developmental disabilities using data on individual children. For the majority of children with cerebral palsy (CP) the cause of their cerebral palsy is unknown. The effects of improved neonatal care overtime which differ dramatically by birth weight have had particular implications for CP. This indicator focuses on one of the leading risk factors for cerebral palsy. Monitoring potentially modifiable, major risk factors is an area ripe for introducing interventions and improving outcomes.

    The denominator for this objective reflects the number of 8-year-old children with CP who were born in the participating ADDM states and resided in the respective surveillance areas at 8 years of age.

Caveats and Limitations: 
The ADDM Cerebral Palsy Network represents surveillance in three large population-based sites within three states, yet is not nationally representative as the sites were funded based on a competitive grant process. The ADDM Network is the only data source in the US that can examine the topic of this objective.
Trend Issues: 
As the ADDM Cerebral Palsy Network is funded based on a competitive grant process, the participating sites have changed over time which may influence trends in measurement of this objective. Analyses restricting the population of children with cerebral palsy to the common geographic ascertainment area over time demonstrate consistent suggestion of trends across the three surveillance years.

Revision History

Any change to the objective text, baseline, target, target-setting method or data source since the Healthy People 2020 launch.

Description of Changes Since the Healthy People 2020 Launch: 
MICH-27: children with cerebral palsy born low birth weight was retained as MICH-27.1 and MICH-27.2 was added to monitor children with cerebral palsy born very low birth weight.