Table of Contents

Component Description

The NHANES program suspended field operations in March 2020 due to the coronavirus disease 2019 (COVID-19) pandemic. As a result, data collection for the NHANES 2019-2020 cycle was not completed and the collected data are not nationally representative. Therefore, data collected from 2019 to March 2020 were combined with data from the NHANES 2017-2018 cycle to form a nationally representative sample of NHANES 2017-March 2020 pre-pandemic data. These data are available to the public. Please refer to the Analytic Notes section for more details on the use of the data.

The volatile toxicant questionnaire (variable name prefix VTQ) includes data about the participants home, activities, amount of time spent in various locations and exposure to different chemicals over the past 48 hours. This questionnaire data can be used in conjunction with the volatile organic compound (VOC) laboratory dataset (P_VOCWB) in the NHANES 2017 – March 2020 Pre-Pandemic Laboratory Data section on the NHANES website.

VOCs are a large group of chemicals that have been used as solvents, degreasers, and cleaning agents in industry and consumer products. Many VOCs were found to contaminate ground water and drinking water sources, and because of human health concerns, have been banned or restricted from most uses.

Eligible Sample

Participants aged 12 years and older from a one-half sample in the NHANES 2017-March 2020 pre-pandemic sample were eligible.

Interview Setting and Mode of Administration

The volatile toxicant questionnaire was asked in the mobile examination center (MEC), by trained phlebotomists, using the computer-assisted personal interview (CAPI) system.

Quality Assurance & Quality Control

VTQ data were systematically reviewed for consistency, data processing, and data input errors on a periodic basis during the data collection.

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

Data were edited for completeness and consistency.

Analytic Notes

The COVID-19 pandemic required suspension of NHANES 2019-2020 field operations in March 2020 after data were collected in 18 of the 30 survey locations in the 2019-2020 sample. Data collection was cancelled for the remaining 12 locations. Because the collected data from 18 locations were not nationally representative, these data were combined with data from the previous cycle (2017-2018) to create a 2017-March 2020 pre-pandemic data file. A special weighting process was applied to the 2017-March 2020 pre-pandemic data file. The resulting sample weights in the demographic data file should be used to calculate estimates from the combined cycles. These sample weights are not appropriate for independent analyses of the 2019-2020 data and will not yield nationally representative results for either the 2017-2018 data alone or the 2019-March 2020 data alone. Please refer to the NHANES website for additional information for the NHANES 2017-March 2020 pre-pandemic data, and for the previous 2017-2018 public use data file with specific weights for that 2-year cycle.

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

SEQN - Respondent sequence number

Variable Name:
SEQN
SAS Label:
Respondent sequence number
English Text:
Respondent sequence number.
Target:
Both males and females 12 YEARS - 150 YEARS

WTSVOCPR - VOC Subsample Weight Pre-Pandemic

Variable Name:
WTSVOCPR
SAS Label:
VOC Subsample Weight Pre-Pandemic
English Text:
VOC Subsample Weight Pre-Pandemic
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
4958.19301 to 899918.46392 Range of Values 4598 4598
0 No Lab Result 598 5196 End of Section
. Missing 0 5196

VTQ210 - Attached garage?

Variable Name:
VTQ210
SAS Label:
Attached garage?
English Text:
First, I would like to ask you a few questions about {your/SP's} home. Does {your/her/his} home have an attached garage?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 1796 1796
2 No 2700 4496
7 Refused 0 4496
9 Don't know 1 4497
. Missing 699 5196

VTQ200A - Store paints or fuels inside home?

Variable Name:
VTQ200A
SAS Label:
Store paints or fuels inside home?
English Text:
{Do you/Does she/Does he} currently store paints or fuels inside {your/her/his} home? Include {your/her/his} basement {and attached garage}.
English Instructions:
CAPI INSTRUCTION: IF SP HAS AN ATTACHED GARAGE (CODED ' 1' IN VTQ.210), DISPLAY {and attached garage}.
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 1336 1336
2 No 3103 4439
7 Refused 1 4440
9 Don't know 57 4497
. Missing 699 5196

VTQ231A - Use moth balls or toilet deodorizers?

Variable Name:
VTQ231A
SAS Label:
Use moth balls or toilet deodorizers?
English Text:
{Do you/Does she/Does he} currently use moth balls, moth crystals or toilet bowl deodorizers inside {your/her/his} home?
English Instructions:
HELP SCREEN SHOULD READ: Some toilet bowl deodorizers clip onto the toilet rim, others, such as deodorant blocks and gels, are placed inside the tank or hang inside the wall of the tank. Brand names include Bully, 2000 Flushes, Vanish, X-14, Ty-D-Bol, Toilet Duck, Clorox, Lime-A-Way, and Sno Bol.
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 958 958
2 No 3465 4423
7 Refused 1 4424
9 Don't know 73 4497
. Missing 699 5196

VTQ233A - Past 3 days inhale smoke for 10 minutes

Variable Name:
VTQ233A
SAS Label:
Past 3 days inhale smoke for 10 minutes
English Text:
In the last three days, did {you/she/he} inhale smoke from any source for 10 or more minutes?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 868 868
2 No 3623 4491
7 Refused 0 4491
9 Don't know 6 4497
. Missing 699 5196

VTQ233B - When did you last inhale smoke for 10min

Variable Name:
VTQ233B
SAS Label:
When did you last inhale smoke for 10min
English Text:
When did {you/she/he} last spend 10 or more minutes inhaling smoke?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Today 398 398
2 Yesterday 302 700
3 More than 2 days 165 865
7 Refused 0 865
9 Don't know 3 868
. Missing 4328 5196

VTQ241A - Did you cook with natural gas?

Variable Name:
VTQ241A
SAS Label:
Did you cook with natural gas?
English Text:
Now I am going to ask you a few questions about {your/SP's} activities over the last 48 hours. This means today or yesterday. In the last 48 hours, did {you/she/he} cook or bake with natural gas?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 960 960
2 No 3524 4484 VTQ244A
7 Refused 0 4484 VTQ244A
9 Don't know 12 4496 VTQ244A
. Missing 700 5196

VTD241B - Long ago did you cook with natural gas?

Variable Name:
VTD241B
SAS Label:
Long ago did you cook with natural gas?
English Text:
Now I am going to ask you a few questions about {your/SP's} activities over the last 48 hours. This means today or yesterday. How long ago, in hours, did {you/she/he} cook or bake with natural gas?
English Instructions:
HOURS HARD EDIT: Range - 1 - 48
Target:
Both males and females 12 YEARS - 150 YEARS
Hard Edits:
1 to 48
Code or Value Value Description Count Cumulative Skip to Item
1 to 48 Range of Values 956 956
0 Less than one hour 0 956
77 Refused 0 956
99 Don't know 1 957
. Missing 4239 5196

VTQ244A - Did you pump gas into your car?

Variable Name:
VTQ244A
SAS Label:
Did you pump gas into your car?
English Text:
In the last 48 hours, did {you/she/he} pump gas into a car or other motor vehicle {yourself/herself/ himself}?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 1235 1235
2 No 3254 4489 VTQ251A
7 Refused 0 4489 VTQ251A
9 Don't know 7 4496 VTQ251A
. Missing 700 5196

VTD244B - Long ago did you pump gas in your car?

Variable Name:
VTD244B
SAS Label:
Long ago did you pump gas in your car?
English Text:
How long ago, in hours, did {you/she/he} pump gas into a car or other motor vehicle {yourself/herself/ himself}?
English Instructions:
HOURS HARD EDIT: Range - 1 - 48
Target:
Both males and females 12 YEARS - 150 YEARS
Hard Edits:
1 to 48
Code or Value Value Description Count Cumulative Skip to Item
1 to 48 Range of Values 1221 1221
0 Less than one hour 7 1228
77 Refused 0 1228
99 Don't know 0 1228
. Missing 3968 5196

VTQ251A - Spend time in pool, hot tub, steam room?

Variable Name:
VTQ251A
SAS Label:
Spend time in pool, hot tub, steam room?
English Text:
In the last 48 hours, did {you/she/he} spend any time at a swimming pool, in a hot tub, or in a steam room?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 131 131
2 No 4365 4496 VTQ261A
7 Refused 0 4496 VTQ261A
9 Don't know 0 4496 VTQ261A
. Missing 700 5196

VTD251B - How long ago since at pool, hot tub?

Variable Name:
VTD251B
SAS Label:
How long ago since at pool, hot tub?
English Text:
How long ago, in hours, has it been since {you/she/he} spent time at a swimming pool, in a hot tub, or in a steam room?
English Instructions:
HOURS HARD EDIT: Range - 1 - 48
Target:
Both males and females 12 YEARS - 150 YEARS
Hard Edits:
1 to 48
Code or Value Value Description Count Cumulative Skip to Item
1 to 48 Range of Values 130 130
0 Less than one hour 0 130
77 Refused 0 130
99 Don't know 0 130
. Missing 5066 5196

VTQ261A - In last 48 hrs use dry cleaning solvent?

Variable Name:
VTQ261A
SAS Label:
In last 48 hrs use dry cleaning solvent?
English Text:
In the last 48 hours, did {you/she/he} use dry cleaning solvents, visit a dry cleaning shop or wear clothes that had been dry-cleaned within the last week?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 156 156
2 No 4328 4484 VTQ271A
7 Refused 0 4484 VTQ271A
9 Don't know 12 4496 VTQ271A
. Missing 700 5196

VTD261B - Long since use dry cleaning solvents?

Variable Name:
VTD261B
SAS Label:
Long since use dry cleaning solvents?
English Text:
How long ago, in hours, has it been since {you/she/he} used dry cleaning solvents, visited a dry cleaning shop or wore clothes that had been dry-cleaned within the last week?
English Instructions:
HOURS HARD EDIT: Range - 1 - 48
Target:
Both males and females 12 YEARS - 150 YEARS
Hard Edits:
1 to 48
Code or Value Value Description Count Cumulative Skip to Item
1 to 48 Range of Values 150 150
0 Less than one hour 3 153
77 Refused 0 153
99 Don't know 1 154
. Missing 5042 5196

VTQ271A - In last 48 hrs, bathe for 5+ minutes?

Variable Name:
VTQ271A
SAS Label:
In last 48 hrs, bathe for 5+ minutes?
English Text:
In the last 48 hours, did {you/she/he} take a hot shower or bath for five minutes or longer?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 3537 3537
2 No 953 4490 VTQ281A
7 Refused 1 4491 VTQ281A
9 Don't know 5 4496 VTQ281A
. Missing 700 5196

VTD271B - How long, in hrs, since you bathed?

Variable Name:
VTD271B
SAS Label:
How long, in hrs, since you bathed?
English Text:
How long ago, in hours, has it been since {your/SP's} last shower or hot bath?
English Instructions:
HOURS HARD EDIT: Range - 1 - 48
Target:
Both males and females 12 YEARS - 150 YEARS
Hard Edits:
1 to 48
Code or Value Value Description Count Cumulative Skip to Item
1 to 48 Range of Values 3530 3530
0 Less than one hour 5 3535
77 Refused 0 3535
99 Don't know 0 3535
. Missing 1661 5196

VTQ281A - In past 48 hrs breathe paint fumes?

Variable Name:
VTQ281A
SAS Label:
In past 48 hrs breathe paint fumes?
English Text:
In the last 48 hours, did {you/she/he} breathe fumes from freshly painted indoor surfaces, paints, paint thinner, or varnish?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 147 147
2 No 4343 4490 VTQ281C
7 Refused 0 4490 VTQ281C
9 Don't know 6 4496 VTQ281C
. Missing 700 5196

VTD281B - How long, since breathed paint fumes?

Variable Name:
VTD281B
SAS Label:
How long, since breathed paint fumes?
English Text:
How long ago, in hours, has it been since {you/she/he} breathed fumes from freshly painted indoor surfaces, paints, paint thinner, or varnish?
English Instructions:
HOURS HARD EDIT: Range - 1 - 48
Target:
Both males and females 12 YEARS - 150 YEARS
Hard Edits:
1 to 48
Code or Value Value Description Count Cumulative Skip to Item
1 to 48 Range of Values 145 145
0 Less than one hour 2 147
77 Refused 0 147
99 Don't know 0 147
. Missing 5049 5196

VTQ281C - In past 48 hrs breathe diesel fumes?

Variable Name:
VTQ281C
SAS Label:
In past 48 hrs breathe diesel fumes?
English Text:
In the last 48 hours, did {you/she/he} breathe fumes from diesel fuel or kerosene?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 162 162
2 No 4320 4482 VTQ281E
7 Refused 0 4482 VTQ281E
9 Don't know 14 4496 VTQ281E
. Missing 700 5196

VTD281D - How long, since breathed diesel fumes?

Variable Name:
VTD281D
SAS Label:
How long, since breathed diesel fumes?
English Text:
How long ago, in hours, has it been since {you/she/he} breathed fumes from diesel fuel or kerosene?
English Instructions:
HARD EDIT: Range - 1 - 48 HOURS
Target:
Both males and females 12 YEARS - 150 YEARS
Hard Edits:
1 to 48
Code or Value Value Description Count Cumulative Skip to Item
1 to 48 Range of Values 161 161
0 Less than one hour 1 162
77 Refused 0 162
99 Don't know 0 162
. Missing 5034 5196

VTQ281E - Breathe fingernail polish fumes?

Variable Name:
VTQ281E
SAS Label:
Breathe fingernail polish fumes?
English Text:
In the last 48 hours, did {you/she/he} breathe fumes from fingernail polish?
Target:
Both males and females 12 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
1 Yes 257 257
2 No 4239 4496 End of Section
7 Refused 0 4496 End of Section
9 Don't know 0 4496 End of Section
. Missing 700 5196

VTD281F - How long, since breathed polish fumes?

Variable Name:
VTD281F
SAS Label:
How long, since breathed polish fumes?
English Text:
How long ago, in hours, has it been since {you/she/he} breathed fumes from fingernail polish?
English Instructions:
HOURS HARD EDIT: Range - 1 - 48
Target:
Both males and females 12 YEARS - 150 YEARS
Hard Edits:
1 to 48
Code or Value Value Description Count Cumulative Skip to Item
1 to 48 Range of Values 256 256
0 Less than one hour 1 257
77 Refused 0 257
99 Don't know 0 257
. Missing 4939 5196

Appendix 1. VOLATILE TOXICANT QUESTIONNAIRE (VTQ) VARIABLE TABLE by CYCLE

ariable Name Questionnaire - English Text 2003-2004 2005-2006 2007-2008 2009-2010 2011-2012 2013-2014 2015-2016 2017-2018 2017-Mar2020
VTQ210 First, I would like to ask you a few questions about {your/SP's} home. Does {your/her/his} home have an attached garage? x x x x x x x x x
VTQ220 Is the source of water for {your/her/his} home from a private well? x x x x x x x x1 x1
VTQ200A {Do you/Does she/Does he} currently store paints or fuels inside {your/her/his} home? Include {your/her/his} basement {and attached garage}. x x x x x x x x
VTQ230A {Do you/Does she/Does he} use toilet bowl deodorizers inside {your/her/his} home? x x x x x
VTQ230B {Do you/Does she/Does he} use moth balls or crystals inside {your/her/his} home? x x x x x
VTQ231A {Do you/Does she/Does he} currently use moth balls, moth crystals or toilet bowl deodorizers inside {your/her/his} home? x x x x
VTQ233A In the last three days, did {you/she/he} inhale smoke from any source for 10 or more minutes? x x x
VTQ233B When did {you/she/he} last spend 10 or more minutes inhaling smoke? x x x
VTQ240A Now I am going to ask you a few questions about {your/SP's} activities over the last three days. This means today, yesterday, or the day before yesterday. In the last three days, did {you/she/he} pump gas into a car or other motor vehicle {yourself/hersel x x x x x
VTQ240B How long ago, in hours, did {you/she/he} pump gas into a car? x x x x x
VTQ241A Now I am going to ask you a few questions about {your/SP's} activities over the last 48 hours. This means today or yesterday. In the last 48 hours, did {you/she/he} cook or bake with natural gas? x x x x
VTQ241B Now I am going to ask you a few questions about {your/SP's} activities over the last 48 hours. This means today or yesterday. How long ago, in hours, did {you/she/he} cook or bake with natural gas? x
VTQ241bG How long ago, in hours, did {you/she/he} cook or bake with natural gas? x x x
VTQ241bQ How long ago, in hours, did {you/she/he} cook or bake with natural gas? x x x
VTQ241bD How long ago, in hours, did {you/she/he} cook or bake with natural gas? x x x
VTQ241bT How long ago, in hours, did {you/she/he} cook or bake with natural gas? x x x
VTQ244A In the last 48 hours, did {you/she/he} pump gas into a car or other motor vehicle {yourself/herself/ himself}? x x x x
VTQ244B How long ago, in hours, did {you/she/he} pump gas into a car or other motor vehicle {yourself/herself/ himself}? x
VTQ244bG How long ago, in hours, did {you/she/he} pump gas into a car or other motor vehicle {yourself/herself/ himself}? x x x
VTQ244bQ How long ago, in hours, did {you/she/he} pump gas into a car or other motor vehicle {yourself/herself/ himself}? x x x
VTQ244bD How long ago, in hours, did {you/she/he} pump gas into a car or other motor vehicle {yourself/herself/ himself}? x x x
VTQ244bT How long ago, in hours, did {you/she/he} pump gas into a car or other motor vehicle {yourself/herself/ himself}? x x x
VTQ250A In the last three days, did {you/she/he} spend any time at a swimming pool, in a hot tub, or in a steam room? x x x x x
VTQ250B How long ago, in hours, has it been since {you/she/he} spent time at a swimming pool, in a hot tub, or in a steam room? x x x x x
VTQ251A In the last 48 hours, did {you/she/he} spend any time at a swimming pool, in a hot tub, or in a steam room? x x x x
VTQ251B In the last 48 hours, did {you/she/he} spend any time at a swimming pool, in a hot tub, or in a steam room? x
VTQ251bG In the last 48 hours, did {you/she/he} spend any time at a swimming pool, in a hot tub, or in a steam room? x x x
VTQ251bQ In the last 48 hours, did {you/she/he} spend any time at a swimming pool, in a hot tub, or in a steam room? x x x
VTQ251bD In the last 48 hours, did {you/she/he} spend any time at a swimming pool, in a hot tub, or in a steam room? x x x
VTQ251bT In the last 48 hours, did {you/she/he} spend any time at a swimming pool, in a hot tub, or in a steam room? x x x
VTQ260A In the last three days, did {you/she/he} visit a dry cleaning shop or wear clothes that had been dry-cleaned within the last week? x x x x x
VTQ260B In the last three days, did {you/she/he} spend 10 or more minutes near a person who was smoking a cigarette, cigar, or pipe? x x x x x
VTQ261A In the last 48 hours, did {you/she/he} use dry cleaning solvents, visit a dry cleaning shop or wear clothes that had been dry-cleaned within the last week? x x x x
VTQ261B How long ago, in hours, has it been since {you/she/he} used dry cleaning solvents, visited a dry cleaning shop or wore clothes that had been dry-cleaned within the last week? x
VTQ261bG How long ago, in hours, has it been since {you/she/he} used dry cleaning solvents, visited a dry cleaning shop or wore clothes that had been dry-cleaned within the last week? x x x
VTQ261bQ How long ago, in hours, has it been since {you/she/he} used dry cleaning solvents, visited a dry cleaning shop or wore clothes that had been dry-cleaned within the last week? x x x
VTQ261bD How long ago, in hours, has it been since {you/she/he} used dry cleaning solvents, visited a dry cleaning shop or wore clothes that had been dry-cleaned within the last week? x x x
VTQ261bT How long ago, in hours, has it been since {you/she/he} used dry cleaning solvents, visited a dry cleaning shop or wore clothes that had been dry-cleaned within the last week? x x x
VTQ265A In the last 48 hours, did {you/she/he} smoke or spend 10 or more minutes near a person who was smoking a cigarette, cigar, or pipe? x
VTQ265B How long ago, in hours, has it been since {you/she/he} smoked or spent 10 or more minutes near a person who was smoking a cigarette, cigar, or pipe? x
VTQ270A In the last three days, did {you/she/he} take a hot shower or bath for five minutes or longer? x x x x x
VTQ270B How long ago, in hours, has it been since {your/SP's} last shower or hot bath? x x x x x
VTQ271A In the last 48 hours, did {you/she/he} take a hot shower or bath for five minutes or longer? x x x x
VTQ271B How long ago, in hours, has it been since {your/SP's} last shower or hot bath? x
VTQ271bG How long ago, in hours, has it been since {your/SP's} last shower or hot bath? x x x
VTQ271bQ How long ago, in hours, has it been since {your/SP's} last shower or hot bath? x x x
VTQ271bD How long ago, in hours, has it been since {your/SP's} last shower or hot bath? x x x
VTQ271bT How long ago, in hours, has it been since {your/SP's} last shower or hot bath? x x x
VTQ280A In the last three days, did {you/she/he} breathe fumes from any of the following: Paints? x x x x x
VTQ280B [In the last three days, did {you/she/he} breathe fumes from any of the following:] Degreasing cleaners? x x x x x
VTQ280C [In the last three days, did {you/she/he} breathe fumes from any of the following:] Diesel fuel or kerosene? x x x x x
VTQ280D [In the last three days, did {you/she/he} breathe fumes from any of the following:] Paint thinner, brush cleaner, or furniture stripper? x x x x x
VTQ280E [In the last three days, did {you/she/he} breathe fumes from any of the following:] Dry-cleaning fluid or spot remover? x x x x x
VTQ280F [In the last three days, did {you/she/he} breathe fumes from any of the following:] Fingernail polish or fingernail polish remover? x x x x x
VTQ280G [In the last three days, did {you/she/he} breathe fumes from any of the following:] Glues or adhesives used for hobbies or crafts? x x x x x
VTQ280H [In the last three days, did {you/she/he} breathe fumes from any of the following:] Varnish or stain? x x x
VTQ281A In the last 48 hours, did {you/she/he} breathe fumes from freshly painted indoor surfaces, paints, paint thinner, or varnish? x x x x
VTQ281B How long ago, in hours, has it been since {you/she/he} breathed fumes from freshly painted indoor surfaces, paints, paint thinner, or varnish? x
VTQ281bG How long ago, in hours, has it been since {you/she/he} breathed fumes from freshly painted indoor surfaces, paints, paint thinner, or varnish? x x x
VTQ281bQ How long ago, in hours, has it been since {you/she/he} breathed fumes from freshly painted indoor surfaces, paints, paint thinner, or varnish? x x x
VTQ281bD How long ago, in hours, has it been since {you/she/he} breathed fumes from freshly painted indoor surfaces, paints, paint thinner, or varnish? x x x
VTQ281bT How long ago, in hours, has it been since {you/she/he} breathed fumes from freshly painted indoor surfaces, paints, paint thinner, or varnish? x x x
VTQ281C In the last 48 hours, did {you/she/he} breathe fumes from diesel fuel or kerosene? x x x x
VTQ281D How long ago, in hours, has it been since {you/she/he} breathed fumes from diesel fuel or kerosene? x
VTQ281dG How long ago, in hours, has it been since {you/she/he} breathed fumes from diesel fuel or kerosene? x x x
VTQ281dQ How long ago, in hours, has it been since {you/she/he} breathed fumes from diesel fuel or kerosene? x x x
VTQ281dD How long ago, in hours, has it been since {you/she/he} breathed fumes from diesel fuel or kerosene? x x x
VTQ281dT How long ago, in hours, has it been since {you/she/he} breathed fumes from diesel fuel or kerosene? x x x
VTQ281E In the last 48 hours, did {you/she/he} breathe fumes from fingernail polish? x x x x
VTQ281F How long ago, in hours, has it been since {you/she/he} breathed fumes from fingernail polish? x
VTQ281fG How long ago, in hours, has it been since {you/she/he} breathed fumes from fingernail polish? x x x
VTQ281fQ How long ago, in hours, has it been since {you/she/he} breathed fumes from fingernail polish? x x x
VTQ281fD How long ago, in hours, has it been since {you/she/he} breathed fumes from fingernail polish? x x x
VTQ281fT How long ago, in hours, has it been since {you/she/he} breathed fumes from fingernail polish? x x x

1 Access available through the NCHS Research Data Center (RDC).