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National Ambulatory Care Survey (NAMCS)
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| Study Number |
S14_7301 |
| Background of Dataset |
| Purpose of the Data Set |
Provides information annually on the use of medical
care services provided by office-based physicians in the United
States. |
| Criteria(s) for Inclusion/Exclusion |
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| Age Range Included |
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| Method(s) of Data Gathering |
Participating physician provides information on
a sample of about 25 visits during a 1-week reporting period.
Using an encounter form and a cross sectional national sample
of approximately 3,000 non-Federal physicians in an office-based
practice or approximately 1% of the universe. |
| Sampling Frame/Design |
|
| Limitation(s) of Study |
The information on race and ethnicity is based on
physician's knowledge of patient or by observation. The physician
is not directed or expected to ask the patient for this information. |
|
Year(s) Available
|
1973-1981, 1985,1989-Present. |
| Number of Observations |
Approx. 40,000 annually. |
| Unit of Observation |
A visit. |
| Publisher |
National Center for Health Statistics (NCHS), CDC |
| Contact Information/Web Address |
http://www.cdc.gov/nchs/ |
| Condition of Use |
Publicly Available. |
| Contents of Database |
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Key Linking Variables
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•Patient identifier
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•Physician identifier
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•Health facility identifier
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•Geographic identifier
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•Other identifier
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| Demographics Information |
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•Sex
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Yes. |
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•Race
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Yes. |
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•Geographic location
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•Income
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•Education
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•Employment status
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•Others
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| Access/Utilization Information |
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| Unit of Utilization |
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| Source of Information |
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•Self reported
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•Parent
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•Medical provider
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•Billing/encounters
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•Other source
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| Health Insurance Information |
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•Insurance status
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•Insurance type
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•Other information
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| Health Care Utilization |
Yes. |
| >Type |
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| 1) Outpatient |
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•Date of visits
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•Number of visits
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Yes. |
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•Referrals information
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Yes. |
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•Specialty visits
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•Other outpatient utilization
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2) Inpatient
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•Admission/discharge dates
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•Number of admissions
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•Length of stay
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•Admission status (transfer, ER admissions...etc)
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•Discharge status
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•Other information
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3) Emergency room
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•Date of visits
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•Number of visits
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•Other information
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4) Pharmacy
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•Date of prescription
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•Drug information
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Yes. |
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•Other information
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5) Other utilization
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•Home care services
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•Long term care
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•Other services
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| >Medical Codes |
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•CPT codes
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•ICD-9 codes
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Yes. |
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•DRG codes
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Yes. |
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•Other codes
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| Health Care Facility Information |
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•Location
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•Number of beds
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•Number of MDs
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•Other information
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| Physician Information |
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•Specialty
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•Name
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•License Number
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•Other information
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| Cost/Expenditure Information |
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•Unit of cost
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•Charges/costs/payments
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•Total
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•Allied and additional services
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•Pharmacy
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•Out-of-pocket payments
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•Other information
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| Other Information |
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| • |
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