Table of Contents

Component Description

A nine-item depression screening instrument, the Patient Health Questionnaire (Kroenke and Spitzer, 2002; Kroenke et al., 2001) was administered to determine the frequency of depression symptoms over the past 2 weeks. A follow-up question assessed the overall impairment of the symptoms. Response categories for the nine-item instrument "not at all," "several days," "more than half the days," and "nearly every day" were given a point ranging from 0 to 3. The instrument incorporates DSM-IV depression diagnostic criteria (Spitzer et al.1999). The variable prefix is DPQ.

Eligible Sample

Mobile Examination Center (MEC) participants 12 years and older were eligible. Only data from participants aged 18 and older are included in this data file. Participants requiring a proxy were not eligible because of the sensitive nature of the questions.

Interview Setting and Mode of Administration

The questions were asked at the MEC, by trained interviewers, using the Computer-Assisted Personal Interview (CAPI) system as part of the MEC interview. Proxy respondents were not permitted for this section.

Quality Assurance & Quality Control

The CAPI system is programmed with built-in consistency checks to reduce data entry errors.

Data Processing and Editing

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

Analytic Notes

A total score is based on the sum of the points in each item ranging from 0 to 27. Major depression and depression severity can be assessed using pre-defined cut-points References).

Data for youth aged 12-17 years are available through the NCHS Research Data Center only.

The NHANES full sample 2-Year MEC Exam Weights (WTMEC2YR) should be used to analyze the 2013-2014.

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.

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 18 YEARS - 150 YEARS

DPQ010 - Have little interest in doing things

Variable Name:
DPQ010
SAS Label:
Have little interest in doing things
English Text:
Over the last 2 weeks, how often have you been bothered by the following problems: little interest or pleasure in doing things? Would you say...
English Instructions:
HANDCARD DPQ1
Target:
Both males and females 18 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Not at all 3976 3976
1 Several days 881 4857
2 More than half the days 293 5150
3 Nearly every day 242 5392
7 Refused 1 5393
9 Don't know 5 5398
. Missing 526 5924

DPQ020 - Feeling down, depressed, or hopeless

Variable Name:
DPQ020
SAS Label:
Feeling down, depressed, or hopeless
English Text:
[Over the last 2 weeks, how often have you been bothered by the following problems:] feeling down, depressed, or hopeless?
English Instructions:
HANDCARD DPQ1
Target:
Both males and females 18 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Not at all 4071 4071
1 Several days 903 4974
2 More than half the days 214 5188
3 Nearly every day 202 5390
7 Refused 3 5393
9 Don't know 3 5396
. Missing 528 5924

DPQ030 - Trouble sleeping or sleeping too much

Variable Name:
DPQ030
SAS Label:
Trouble sleeping or sleeping too much
English Text:
[Over the last 2 weeks, how often have you been bothered by the following problems:] trouble falling or staying asleep, or sleeping too much?
English Instructions:
HANDCARD DPQ1
Target:
Both males and females 18 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Not at all 3416 3416
1 Several days 1127 4543
2 More than half the days 350 4893
3 Nearly every day 501 5394
7 Refused 1 5395
9 Don't know 0 5395
. Missing 529 5924

DPQ040 - Feeling tired or having little energy

Variable Name:
DPQ040
SAS Label:
Feeling tired or having little energy
English Text:
[Over the last 2 weeks, how often have you been bothered by the following problems:] feeling tired or having little energy?
English Instructions:
HANDCARD DPQ1
Target:
Both males and females 18 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Not at all 2650 2650
1 Several days 1829 4479
2 More than half the days 423 4902
3 Nearly every day 492 5394
7 Refused 1 5395
9 Don't know 0 5395
. Missing 529 5924

DPQ050 - Poor appetite or overeating

Variable Name:
DPQ050
SAS Label:
Poor appetite or overeating
English Text:
[Over the last 2 weeks, how often have you been bothered by the following problems:] poor appetite or overeating?
English Instructions:
HANDCARD DPQ1
Target:
Both males and females 18 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Not at all 4036 4036
1 Several days 832 4868
2 More than half the days 278 5146
3 Nearly every day 247 5393
7 Refused 0 5393
9 Don't know 2 5395
. Missing 529 5924

DPQ060 - Feeling bad about yourself

Variable Name:
DPQ060
SAS Label:
Feeling bad about yourself
English Text:
[Over the last 2 weeks, how often have you been bothered by the following problems:] feeling bad about yourself - or that you are a failure or have let yourself or your family down?
English Instructions:
HANDCARD DPQ1
Target:
Both males and females 18 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Not at all 4449 4449
1 Several days 620 5069
2 More than half the days 154 5223
3 Nearly every day 167 5390
7 Refused 0 5390
9 Don't know 4 5394
. Missing 530 5924

DPQ070 - Trouble concentrating on things

Variable Name:
DPQ070
SAS Label:
Trouble concentrating on things
English Text:
[Over the last 2 weeks, how often have you been bothered by the following problems:] trouble concentrating on things, such as reading the newspaper or watching TV?
English Instructions:
HANDCARD DPQ1
Target:
Both males and females 18 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Not at all 4423 4423
1 Several days 586 5009
2 More than half the days 193 5202
3 Nearly every day 189 5391
7 Refused 1 5392
9 Don't know 2 5394
. Missing 530 5924

DPQ080 - Moving or speaking slowly or too fast

Variable Name:
DPQ080
SAS Label:
Moving or speaking slowly or too fast
English Text:
[Over the last 2 weeks, how often have you been bothered by the following problems:] moving or speaking so slowly that other people could have noticed? Or the opposite - being so fidgety or restless that you have been moving around a lot more than usual?
English Instructions:
HANDCARD DPQ1
Target:
Both males and females 18 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Not at all 4786 4786
1 Several days 367 5153
2 More than half the days 134 5287
3 Nearly every day 104 5391
7 Refused 1 5392
9 Don't know 2 5394
. Missing 530 5924

DPQ090 - Thought you would be better off dead

Variable Name:
DPQ090
SAS Label:
Thought you would be better off dead
English Text:
Over the last 2 weeks, how often have you been bothered by the following problems: Thoughts that you would be better off dead or of hurting yourself in some way?
English Instructions:
HAND CARD DPQ1
Target:
Both males and females 18 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Not at all 5205 5205
1 Several days 122 5327
2 More than half the days 31 5358
3 Nearly every day 32 5390
7 Refused 1 5391
9 Don't know 2 5393
. Missing 531 5924

DPQ100 - Difficulty these problems have caused

Variable Name:
DPQ100
SAS Label:
Difficulty these problems have caused
English Text:
How difficult have these problems made it for you to do your work, take care of things at home, or get along with people?
Target:
Both males and females 18 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 Not at all difficult, 2693 2693
1 Somewhat difficult, 771 3464
2 Very difficult, 138 3602
3 Extremely difficult 69 3671
7 Refused 1 3672
9 Don't know 2 3674
. Missing 2250 5924