Table of Contents

Locator Record

Title: Blood Pressure (BPX_F )
Contact Number: 1-866-441-NCHS
Years of Content: 2009 - 2010
First Published: September, 2011
Revised: NA
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:The data in this file provide interview questions and blood pressure measurements taken in the mobile examination center by two physicians on sample persons eight years of age and older.
Record Source: NHANES 2009 - 2010
Survey Methodology: NHANES 2009 - 2010 is a stratified multistage probability sample of the civilian non-institutionalized population of the U.S.
Medium: NHANES Web site; SAS transport files

Component Description

Accurate measurement of blood pressure (BP) is a major public health concern; it is essential for hypertension screening, as well as for disease management. This section provides data for three consecutive blood pressure (BP) measurements and other methodological measurements to obtain an accurate blood pressure.

 

Eligible Sample

Heart rate is measured on all children 0-4 years of age; radial pulse is measured on examinees 5 years and older; and blood pressure (BP) is measured on all examinees 8 years and older. Participants with any of the following on both arms were excluded from the exam: rashes, gauze dressings, casts, edema, paralysis, tubes, open sores or wounds, withered arms, a-v shunts, radical mastectomy or if BP cuff does not fit on the arm.

 

Protocol and Procedure

After resting quietly in a sitting position for 5 minutes and determining the maximum inflation level (MIL), three consecutive blood pressure readings are obtained. If a blood pressure measurement is interrupted or incomplete, a fourth attempt may be made. All BP determinations (systolic and diastolic) are taken in the mobile examination center (MEC).

 

Quality Assurance & Quality Control

The BP examiners are certified for blood pressure measurement through a training program from Shared Care Research and Education Consulting. Certification is achieved when physician examiners meet all requirements of the training program. The initial training includes:

Certification requires a score of 100 per cent on the audio-video tape test. Correct answers on the audio-video tape test require the examiner’s answers and the standardized test answers to be within +/- 2mm mercury (Hg) on 92 per cent of 24 measures (12 systolic, 12 diastolic), and within +/- 4mm Hg on 100 percent of 24 measures (12 systolic, 12 diastolic). For more information on quality assurance and control, see Ostchega et al. (Ostchega et al).

For more details on the QA/QC process for this component, please refer to the Physician Section of the MEC Operations Manual located on the NHANES website at the following link:
http://www.cdc.gov/nchs/nhanes/nhanes2009-2010/current_nhanes_09_10.htm

 

Analytic Notes

Changes Since 2007-2008:
There was no change since 2007-2008.
Exam sample weights should be used for analyses. Please refer to the NHANES Analytic Guidelines (http://www.cdc.gov/nchs/nhanes/survey_methods.htm) and the on-line NHANES Tutorial (http://www.cdc.gov/nchs/tutorials/) for further details on the use of sample weights and other analytic issues.

 

References

Codebook and Frequencies

SEQN - Respondent sequence number

Variable Name:
SEQN
SAS Label:
Respondent sequence number
English Text:
Respondent sequence number.
Target:
Both males and females 0 YEARS - 150 YEARS

PEASCST1 - Blood Pressure Status

Variable Name:
PEASCST1
SAS Label:
Blood Pressure Status
English Text:
Blood Pressure Status
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Complete 9854 9854
2 Partial 37 9891
3 Not done 362 10253
. Missing 0 10253

PEASCTM1 - Blood Pressure Time in Seconds

Variable Name:
PEASCTM1
SAS Label:
Blood Pressure Time in Seconds
English Text:
Blood Pressure Time in Seconds
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
5 to 3059 Range of Values 9880 9880
. Missing 373 10253

PEASCCT1 - Blood Pressure Comment

Variable Name:
PEASCCT1
SAS Label:
Blood Pressure Comment
English Text:
Blood Pressure Comment
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
2 SP refusal 32 32
3 No time 9 41
4 Physical limitation 9 50
6 Equipment failure 1 51
7 SP ill/emergency 13 64
56 Came late/left early 254 318
84 SP with child 26 344
99 Other, specify 49 393
122 Language barrier 6 399
. Missing 9854 10253

BPXCHR - 60 sec HR (30 sec HR * 2)

Variable Name:
BPXCHR
SAS Label:
60 sec HR (30 sec HR * 2)
English Text:
60 sec HR (30 sec HR * 2)
Target:
Both males and females 0 YEARS - 7 YEARS
Code or Value Value Description Count Cumulative Skip to Item
54 to 184 Range of Values 2051 2051
. Missing 8202 10253

BPQ150A - Had food in the past 30 minutes?

Variable Name:
BPQ150A
SAS Label:
Had food in the past 30 minutes?
English Text:
Have you had any of the following in the past 30 minutes?: Food
English Instructions:
Check each that applies
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 1863 1863
2 No 5968 7831
. Missing 2422 10253

BPQ150B - Had alcohol in the past 30 minutes?

Variable Name:
BPQ150B
SAS Label:
Had alcohol in the past 30 minutes?
English Text:
Have you had any of the following in the past 30 minutes?: Alcohol
English Instructions:
Check each that applies
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 6 6
2 No 7825 7831
. Missing 2422 10253

BPQ150C - Had coffee in the past 30 minutes?

Variable Name:
BPQ150C
SAS Label:
Had coffee in the past 30 minutes?
English Text:
Have you had any of the following in the past 30 minutes?: Coffee
English Instructions:
Check each that applies
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 58 58
2 No 7773 7831
. Missing 2422 10253

BPQ150D - Had cigarettes in the past 30 minutes?

Variable Name:
BPQ150D
SAS Label:
Had cigarettes in the past 30 minutes?
English Text:
Have you had any of the following in the past 30 minutes?: Cigarettes
English Instructions:
Check each that applies
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 96 96
2 No 7735 7831
. Missing 2422 10253

BPAARM - Arm selected:

Variable Name:
BPAARM
SAS Label:
Arm selected:
English Text:
Arm selected:
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Right 7797 7797
2 Left 34 7831
8 Could not obtain 0 7831
. Missing 2422 10253

BPACSZ - Coded cuff size

Variable Name:
BPACSZ
SAS Label:
Coded cuff size
English Text:
Cuff size (cm) (width X length)
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Infant (6X12) 3 3
2 Child (9X17) 432 435
3 Adult (12X22) 2470 2905
4 Large (15X32) 3799 6704
5 Thigh (18X35) 1127 7831
. Missing 2422 10253

BPXPLS - 60 sec. pulse (30 sec. pulse * 2):

Variable Name:
BPXPLS
SAS Label:
60 sec. pulse (30 sec. pulse * 2):
English Text:
60 sec. pulse (30 sec. pulse * 2):
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
40 to 126 Range of Values 7836 7836
. Missing 2417 10253

BPXPULS - Pulse regular or irregular?

Variable Name:
BPXPULS
SAS Label:
Pulse regular or irregular?
English Text:
Pulse regular or irregular?
Target:
Both males and females 0 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Regular 9713 9713
2 Irregular 178 9891
. Missing 362 10253

BPXPTY - Pulse type:

Variable Name:
BPXPTY
SAS Label:
Pulse type:
English Text:
Pulse type:
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Radial 7842 7842
2 Brachial 5 7847
8 Could not obtain 0 7847
. Missing 2406 10253

BPXML1 - MIL: maximum inflation levels (mm Hg)

Variable Name:
BPXML1
SAS Label:
MIL: maximum inflation levels (mm Hg)
English Text:
MIL: maximum inflation levels (mm Hg)
Target:
Both males and females 8 YEARS - 150 YEARS
Hard Edits:
70.0000 to 300.0000
Code or Value Value Description Count Cumulative Skip to Item
100 to 260 Range of Values 7828 7828
888 Could not obtain 0 7828
. Missing 2425 10253

BPXSY1 - Systolic: Blood pres (1st rdg) mm Hg

Variable Name:
BPXSY1
SAS Label:
Systolic: Blood pres (1st rdg) mm Hg
English Text:
Systolic: Blood pressure (first reading) mm Hg
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
72 to 232 Range of Values 7529 7529
. Missing 2724 10253

BPXDI1 - Diastolic: Blood pres (1st rdg) mm Hg

Variable Name:
BPXDI1
SAS Label:
Diastolic: Blood pres (1st rdg) mm Hg
English Text:
Diastolic: Blood pressure (first reading) mm Hg
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 134 Range of Values 7529 7529
. Missing 2724 10253

BPAEN1 - Enhancement used first reading

Variable Name:
BPAEN1
SAS Label:
Enhancement used first reading
English Text:
Enhancement used first reading
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 2 2
2 No 7826 7828
8 Could not obtain 0 7828
. Missing 2425 10253

BPXSY2 - Systolic: Blood pres (2nd rdg) mm Hg

Variable Name:
BPXSY2
SAS Label:
Systolic: Blood pres (2nd rdg) mm Hg
English Text:
Systolic: Blood pressure (second reading) mm Hg
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
74 to 230 Range of Values 7573 7573
. Missing 2680 10253

BPXDI2 - Diastolic: Blood pres (2nd rdg) mm Hg

Variable Name:
BPXDI2
SAS Label:
Diastolic: Blood pres (2nd rdg) mm Hg
English Text:
Diastolic: Blood pressure (second reading) mm Hg
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 134 Range of Values 7573 7573
. Missing 2680 10253

BPAEN2 - Enhancement used second reading

Variable Name:
BPAEN2
SAS Label:
Enhancement used second reading
English Text:
Enhancement used second reading
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 177 177
2 No 7647 7824
8 Could not obtain 0 7824
. Missing 2429 10253

BPXSY3 - Systolic: Blood pres (3rd rdg) mm Hg

Variable Name:
BPXSY3
SAS Label:
Systolic: Blood pres (3rd rdg) mm Hg
English Text:
Systolic: Blood pressure (third reading) mm Hg
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
74 to 226 Range of Values 7588 7588
. Missing 2665 10253

BPXDI3 - Diastolic: Blood pres (3rd rdg) mm Hg

Variable Name:
BPXDI3
SAS Label:
Diastolic: Blood pres (3rd rdg) mm Hg
English Text:
Diastolic: Blood pressure (third reading) mm Hg
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 128 Range of Values 7588 7588
. Missing 2665 10253

BPAEN3 - Enhancement used third reading

Variable Name:
BPAEN3
SAS Label:
Enhancement used third reading
English Text:
Enhancement used third reading
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 154 154
2 No 7668 7822
8 Could not obtain 0 7822
. Missing 2431 10253

BPXSY4 - Systolic: Blood pres (4th rdg) mm Hg

Variable Name:
BPXSY4
SAS Label:
Systolic: Blood pres (4th rdg) mm Hg
English Text:
Systolic: Blood pressure (fourth reading if necessary) mm Hg
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
70 to 226 Range of Values 408 408
. Missing 9845 10253

BPXDI4 - Diastolic: Blood pres (4th rdg) mm Hg

Variable Name:
BPXDI4
SAS Label:
Diastolic: Blood pres (4th rdg) mm Hg
English Text:
Diastolic: Blood pressure (fourth reading if necessary) mm Hg
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 118 Range of Values 408 408
. Missing 9845 10253

BPAEN4 - Enhancement used fourth reading

Variable Name:
BPAEN4
SAS Label:
Enhancement used fourth reading
English Text:
Enhancement used fourth reading
Target:
Both males and females 8 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 52 52
2 No 541 593
8 Could not obtain 0 593
. Missing 9660 10253