• Component Description
• Eligible Sample
• Interview Setting and Mode of Administration
• Quality Assurance & Quality Control
• Data Processing and Editing
• Analytic Notes
• Codebook
  • SEQN - Respondent sequence number
  • BPQ020 - Ever told you had high blood pressure
  • BPQ030 - Told had high blood pressure - 2+ times
  • BPD035 - Age told had hypertension
  • BPQ040A - Taking prescription for hypertension
  • BPQ050A - Now taking prescribed medicine for HBP
  • BPQ080 - Doctor told you - high cholesterol level
  • BPQ060 - Ever had blood cholesterol checked
  • BPQ070 - When blood cholesterol last checked
  • BPQ090D - Told to take prescriptn for cholesterol
  • BPQ100D - Now taking prescribed medicine

National Health and Nutrition Examination Survey

2017-2018 Data Documentation, Codebook, and Frequencies

Blood Pressure & Cholesterol (BPQ_J)

Data File: BPQ_J.xpt

First Published: February 2020

Last Revised: NA

Component Description

The Blood Pressure/Cholesterol section (variable name prefix BPQ) provides personal interview data on awareness, treatment, and control of high blood pressure and high cholesterol.

Eligible Sample

Participants aged 16 years and older were eligible.

Interview Setting and Mode of Administration

These questions were asked, in the home, by trained interviewers using the Computer-Assisted Personal Interview (CAPI) system.

Quality Assurance & Quality Control

The CAPI system is programmed with built-in consistency checks to reduce data entry errors. CAPI also uses online help screens to assist interviewers in defining key terms used in the questionnaire. All of the data were reviewed by the NHANES field office staff for accuracy and completeness.

Data Processing and Editing

Edits were made to ensure the completeness, consistency, and analytic usefulness of the data.

Analytic Notes

Although these data were collected as part of the household questionnaire, if they are merged with the MEC exam data, exam sample weights should be used for the analyses.

In order to prevent possible disclosure, values of BPD035 less than 12 were recoded to 12 and values greater than 80 were recoded to 80.

Please refer to the NHANES Analytic Guidelines and the on-line NHANES Tutorial for further details on the use of sample weights and other analytic issues.

Codebook and Frequencies