CODEBOOK OF NATIONAL AMBULATORY MEDICAL CARE SURVEY HEALTH CENTER (NAMCS HC) COMPONENT PUBLIC USE DATA FILE

This document is the codebook for the 2022 NAMCS HC Component public use data file. For each item on the record, the user is provided with a

Number of records = 282,017

sequential item number, variable name, brief description of the item, field length, file location, and values.

Item Variable Name Description SAS/Stata R Format Values Keywords Notes No. Format 1 PUF_ID Unique visit Numeric Numeric Range from Public use identifier on the 1-282017 data file, PUF Unique 2 HCID_S Scrambled health Numeric Numeric Range from Primary If using SAS SUDAAN center ID 1-64 sampling survey procedures HCID_S unit, PSU must be numeric. HCID_S is the primary sampling unit (PSU) variable. 3 DAY Day of the week on | Numeric Factor 1 = Sunday which the 2 = Monday encounter 3 = Tuesday occurred 4 = Wednesday 5 = Thursday 6 = Friday 7 = Saturday 4 MONTH Month in which the | Numeric Factor 1= January encounter 2= February occurred 3= March 4= April 5= May 6= June 7= July 8= August 9= September 10= October

11= November 12= December

YEAR

Survey year

Character

Character

2022

Year

MARITAL

AGE

Patient marital status

Patient age in years

Character

Numeric

Character

Numeric

-9 = Missing

D = Divorced

L = Legally Separated

M = Married

O = Other

S = Single

T = Domestic Partner

U = Unmarried

W = Widowed

-9 = Missing Values from 0-87 88 = 88 years and older

AGE_GROUP

Patient age group

Numeric

Factor

-9 = Blank

1 =Less than 18 years

2 = 18-44 years 3 = 45-64 years 4 = 65 years or more

AGE_U1_MONTH

Age in months for patients less than 1 year old

Numeric

Factor

Range from 0-11

10

ETHNICITY

Patient Hispanic ethnicity

Numeric

Logical

-9 = Missing

1 = Hispanic or Latino

2 = Not Hispanic or Latino

11

RACE

Patient race

Numeric

Factor

-9 = Missing

1=AIAN

2 = Asian 3 = Black 4 = NHOPI 5 = White 6 = Other

12 RACERETH Patient race and Numeric Factor -9 = Missing

Hispanic ethnicity 1 = White 2 = Black 3 = Hispanic 4 = Other

13 SEX Patient sex Numeric Factor -9 = Missing

1= Male 2 = Female

14 VISWT Visit level weight Numeric Numeric Range 0-999 Weight

15 STRATUM_S Scrambled stratum | Numeric Numeric Range 1-8 If using SAS SUDAAN of the HC survey procedures

STRATUM_S must be numeric.

16-45 DX1-DX30 Diagnosis #1- Character Character -9 = Missing ICD-10-CM, | https://www.cdc.gov/nchs Diagnosis #30 (ICD- A000 — Z998 = Diagnosis /icd/Comprehensive- 10-CM), diagnosis A00.0 — 299.8 Listing-of-ICD-10-CM- code truncated to 4 Files.htm characters (no decimal)

46-75 DX_TYPE1- Diagnosis type #1- Numeric Logical -9 = Missing

DX_TYPE30 Diagnosis type #30 1 = Primary

2 = Not Primary