Table of Contents

Locator Record

Title: Phlebotomy Examination (PH )
Contact Number: 1-866-441-NCHS
Years of Content: 1999 - 2000
First Published: June, 2002
Revised: December, 2005
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:phlebotomy
Record Source: NHANES 1999 - 2000
Survey Methodology: NHANES 1999 - 2000 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

The phlebotomy component of NHANES involved the collection of blood specimens. Prior to blood collection, the MEC phlebotomist administered a questionnaire to screen for conditions that would exclude participants from the blood draw. At this time, fasting status was determined. Blood specimens for basic hematology, nutritional biochemistry, and special studies was obtained Blood specimens are collected on participants aged one year and older in the MEC (or the respondent’s home when a home examination is performed).

Eligible Sample

Participants aged 1+ years of age

Protocol and Procedure

 
Data Collection Methods

The MEC phlebotomist draws blood from the participant’s arm. The volume of blood specimen for each age group is as follows:

Examination Protocol

Detailed specimen collection and processing instructions are discussed in the NHANES Laboratory/Medical Technologists Procedures Manual (LPM).

Survey Staff

The NHANES 1999-2000 staff consisted of two phlebotomists. The American Society
for Clinical Pathologists or a similar organization certifies the phlebotomists. The MEC phlebotomists complete comprehensive training in pediatric phlebotomy techniques, including instruction by a pediatric nurse practitioner.

Data Collection

Detailed specimen collection and processing instructions are discussed in the NHANES Laboratory/Medical Technologists Procedures Manual (LPM). Each chapter in the LPM specifies the procedure to be used for preparation of the participant, specimen collection, labeling, processing, and preservation, and conditions for specimen transport that are appropriate for that method.

Data Processing and Editing

Phlebotomy data were recorded directly into a computerized database; all forms used in the MEC were automated.

Analytic Notes

Use PHAFSTHR and PHAFSTMN to determine the duration of fasting in hours and minutes, respectively.

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 1 YEARS - 150 YEARS

PHQ020 - Coffee or tea with cream or sugar?

Variable Name:
PHQ020
SAS Label:
Coffee or tea with cream or sugar?
English Text:
Coffee or tea with cream or sugar? [Include milk or non-dairy creamers.]
English Instructions:
Have you had any of the following since the fasting time in variable PHQ010. PHQ010: When was the last time you ate or drank anything other than plain water? [Do not include diet soda, black coffee or tea with saccharine or Equal.] (Note: Variable PHQ010 was not released as part of this data set because of disclosure issues)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 44 44
2 No 8306 8350
. Missing 482 8832

PHACOFHR - Coffee/tea fast time (hours)

Variable Name:
PHACOFHR
SAS Label:
Coffee/tea fast time (hours)
English Text:
Coffee/tea fast time (hours)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 15 Range of Values 44 44
. Missing 8788 8832

PHACOFMN - Coffee/tea fast time (minutes)

Variable Name:
PHACOFMN
SAS Label:
Coffee/tea fast time (minutes)
English Text:
Coffee/tea fast time (minutes)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
2 to 58 Range of Values 44 44
. Missing 8788 8832

PHQ030 - Alcohol, such as beer, wine, or liquor?

Variable Name:
PHQ030
SAS Label:
Alcohol, such as beer, wine, or liquor?
English Text:
Alcohol, such as beer, wine, or liquor?
English Instructions:
Have you had any of the following since the fasting time in variable PHQ010. PHQ010: When was the last time you ate or drank anything other than plain water? [Do not include diet soda, black coffee or tea with saccharine or Equal.] (Note: Variable PHQ010 was not released as part of this data set because of disclosure issues)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 33 33
2 No 8317 8350
. Missing 482 8832

PHAALCHR - Alcohol fast time (hours)

Variable Name:
PHAALCHR
SAS Label:
Alcohol fast time (hours)
English Text:
Alcohol fast time (hours)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 17 Range of Values 33 33
. Missing 8799 8832

PHAALCMN - Alcohol fast time (minutes)

Variable Name:
PHAALCMN
SAS Label:
Alcohol fast time (minutes)
English Text:
Alcohol fast time (minutes)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
3 to 59 Range of Values 33 33
. Missing 8799 8832

PHQ040 - Gum, mints, lozenges or cough drops

Variable Name:
PHQ040
SAS Label:
Gum, mints, lozenges or cough drops
English Text:
Gum, breath mints, lozenges or cough drops, or other cough or cold remedies?
English Instructions:
Have you had any of the following since the fasting time in variable PHQ010. PHQ010: When was the last time you ate or drank anything other than plain water? [Do not include diet soda, black coffee or tea with saccharine or Equal.] (Note: Variable PHQ010 was not released as part of this data set because of disclosure issues)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 291 291
2 No 8059 8350
. Missing 482 8832

PHAGUMHR - Gum, mints cough drops fast time (hours)

Variable Name:
PHAGUMHR
SAS Label:
Gum, mints cough drops fast time (hours)
English Text:
Gum, mints cough drops fast time (hours)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 17 Range of Values 291 291
. Missing 8541 8832

PHAGUMMN - Gum, mints, cough fast time (minutes)

Variable Name:
PHAGUMMN
SAS Label:
Gum, mints, cough fast time (minutes)
English Text:
Gum, mints, cough fast time (minutes)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 59 Range of Values 291 291
. Missing 8541 8832

PHQ050 - Antacids, laxatives, or anti-diarrheals?

Variable Name:
PHQ050
SAS Label:
Antacids, laxatives, or anti-diarrheals?
English Text:
Antacids, laxatives, or anti-diarrheals?
English Instructions:
Have you had any of the following since the fasting time in variable PHQ010. PHQ010: When was the last time you ate or drank anything other than plain water? [Do not include diet soda, black coffee or tea with saccharine or Equal.] (Note: Variable PHQ010 was not released as part of this data set because of disclosure issues)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 28 28
2 No 8322 8350
. Missing 482 8832

PHAANTHR - Antacids, laxatives fast time (hours)

Variable Name:
PHAANTHR
SAS Label:
Antacids, laxatives fast time (hours)
English Text:
Antacids, laxatives fast time (hours)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 16 Range of Values 28 28
. Missing 8804 8832

PHAANTMN - Antacids, laxatives fast time (minutes)

Variable Name:
PHAANTMN
SAS Label:
Antacids, laxatives fast time (minutes)
English Text:
Antacids, laxatives fast time (minutes)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
2 to 57 Range of Values 28 28
. Missing 8804 8832

PHQ060 - Dietary supplements?

Variable Name:
PHQ060
SAS Label:
Dietary supplements?
English Text:
Dietary supplements such as vitamins and minerals? [Include multivitamins and single nutrient supplements.]
English Instructions:
Have you had any of the following since the fasting time in variable PHQ010. PHQ010: When was the last time you ate or drank anything other than plain water? [Do not include diet soda, black coffee or tea with saccharine or Equal.] (Note: Variable PHQ010 was not released as part of this data set because of disclosure issues)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 91 91
2 No 8259 8350
. Missing 482 8832

PHASUPHR - Dietary supplements fast time (hours)

Variable Name:
PHASUPHR
SAS Label:
Dietary supplements fast time (hours)
English Text:
Dietary supplements fast time (hours)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 18 Range of Values 91 91
. Missing 8741 8832

PHASUPMN - Dietary supplements fast time (minutes)

Variable Name:
PHASUPMN
SAS Label:
Dietary supplements fast time (minutes)
English Text:
Dietary supplements fast time (minutes)
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 59 Range of Values 91 91
. Missing 8741 8832

PHAFSTHR - Total length of "food fast," hours

Variable Name:
PHAFSTHR
SAS Label:
Total length of "food fast," hours
English Text:
The time (in hours) between when the examinee last ate or drank anything other than water and the time of the venipuncture.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 46 Range of Values 8350 8350
. Missing 482 8832

PHAFSTMN - Total length of "food fast," minutes

Variable Name:
PHAFSTMN
SAS Label:
Total length of "food fast," minutes
English Text:
The time (in minutes) between when the examinee last ate or drank anything other than water and the time of the venipuncture.
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 59 Range of Values 8350 8350
. Missing 482 8832

PHDSESN - Session in which SP was examined

Variable Name:
PHDSESN
SAS Label:
Session in which SP was examined
English Text:
Target:
Both males and females 1 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 morning 4142 4142
1 afternoon 3063 7205
2 evening 1627 8832
. Missing 0 8832