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Abstract Details
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Activity Number:
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349
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Type:
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Contributed
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Date/Time:
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Tuesday, July 31, 2012 : 10:30 AM to 12:20 PM
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Sponsor:
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Section on Survey Research Methods
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| Abstract - #304859 |
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Title:
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Redesign of the National Ambulatory Medical Care Survey to Support State Estimates
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Author(s):
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Esther Hing*+ and Iris Shimizu
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Companies:
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National Center for Health Statistics and National Center for Health Statistics
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Address:
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3311 Toledo Rd., Hyattsville, MD, 20782, United States
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Keywords:
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State estimates ;
Physicians ;
Community health centers
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Abstract:
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The National Ambulatory Medical Care Survey (NAMCS) is an annual nationally representative sample survey of visits to about 3,000 office-based physicians, excluding anesthesiologist, radiologists, and pathologists, and 104 community health centers (CHCs). Prior to 2012, the NAMCS sample design utilized a multistage probability design involving samples of geographic primary sampling units (PSUs), physicians/CHCs within PSUs, providers within CHCs, and visits within provider practices. Estimates by state were often unreliable due to insufficient sample size and were not designed to be representative by state. The 2012 NAMCS has been redesigned to provide state-level estimates for the first time in 34 states with large populations. The remaining states are included in Census Division level estimates. The redesigned sample is stratified by state and selects physicians and CHCs instead of PSU
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