National Health and Nutrition Examination Survey

2015-2016 Data Documentation, Codebook, and Frequencies

Mental Health - Depression Screener - Youth (DPQY_I_R)

RDC Only Data File: DPQY_I_R.xpt

First Published: December 2017

Last Revised: NA

Due to disclosure issues, this dataset is not available publicly. Access may be obtained through the NCHS Research Data Center (https://www.cdc.gov/rdc).

Component Description

A nine-item depression screening instrument (variable name prefix DPQ), also called 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).

Eligible Sample

Mobile Examination Center (MEC) participants 12 years and older were eligible; only data from participants aged 12 to 17 are included in this NCHS Research Data Center 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.

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 (see References).

Data for adults aged 12 years and older are available as an NHANES public release data file (DPQ_I).

The NHANES full sample 2-Year MEC Exam Weights (WTMEC2YR) should be used to analyze the 2015-2016.

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

Kroenke K, Spitzer RL, William JB. The PHQ-9: validity of a brief depression severity measure. J Gen Intern Med 2001; 16: 1606-13.
Kroenke K, Spitzer RL. The PHQ-9: a new depression and diagnostic severity measure. Psych Annals 2002; 32:509-21.
Spitzer RL, Kroenke K, Williams JB. Validation and utility of a self-report version of Prime MD: the PHQ primary care study. JAMA 1999; 282: 1737-44.

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 - 17 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:: HAND CARD DPQ1
Target:: Both males and females 12 YEARS - 17 YEARS

Code or Value	Value Description	Count	Cumulative
0	Not at all	724	724
1	Several days	145	869
2	More than half the days	46	915
3	Nearly every day	29	944
7	Refused	1	945
9	Don't know	2	947
.	Missing	62	1009

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:: HAND CARD DPQ1
Target:: Both males and females 12 YEARS - 17 YEARS

Code or Value	Value Description	Count	Cumulative
0	Not at all	752	752
1	Several days	148	900
2	More than half the days	30	930
3	Nearly every day	16	946
7	Refused	0	946
9	Don't know	0	946
.	Missing	63	1009

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:: HAND CARD DPQ1
Target:: Both males and females 12 YEARS - 17 YEARS

Code or Value	Value Description	Count	Cumulative
0	Not at all	630	630
1	Several days	224	854
2	More than half the days	53	907
3	Nearly every day	39	946
7	Refused	0	946
9	Don't know	0	946
.	Missing	63	1009

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:: HAND CARD DPQ1
Target:: Both males and females 12 YEARS - 17 YEARS

Code or Value	Value Description	Count	Cumulative
0	Not at all	475	475
1	Several days	350	825
2	More than half the days	73	898
3	Nearly every day	48	946
7	Refused	0	946
9	Don't know	0	946
.	Missing	63	1009

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:: HAND CARD DPQ1
Target:: Both males and females 12 YEARS - 17 YEARS

Code or Value	Value Description	Count	Cumulative
0	Not at all	776	776
1	Several days	123	899
2	More than half the days	29	928
3	Nearly every day	17	945
7	Refused	0	945
9	Don't know	1	946
.	Missing	63	1009

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:: HAND CARD DPQ1
Target:: Both males and females 12 YEARS - 17 YEARS

Code or Value	Value Description	Count	Cumulative
0	Not at all	813	813
1	Several days	86	899
2	More than half the days	22	921
3	Nearly every day	24	945
7	Refused	0	945
9	Don't know	1	946
.	Missing	63	1009

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:: HAND CARD DPQ1
Target:: Both males and females 12 YEARS - 17 YEARS

Code or Value	Value Description	Count	Cumulative
0	Not at all	741	741
1	Several days	136	877
2	More than half the days	34	911
3	Nearly every day	35	946
7	Refused	0	946
9	Don't know	0	946
.	Missing	63	1009

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:: HAND CARD DPQ1
Target:: Both males and females 12 YEARS - 17 YEARS

Code or Value	Value Description	Count	Cumulative
0	Not at all	832	832
1	Several days	80	912
2	More than half the days	23	935
3	Nearly every day	11	946
7	Refused	0	946
9	Don't know	0	946
.	Missing	63	1009

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 12 YEARS - 17 YEARS

Code or Value	Value Description	Count	Cumulative
0	Not at all	895	895
1	Several days	33	928
2	More than half the days	12	940
3	Nearly every day	6	946
7	Refused	0	946
9	Don't know	0	946
.	Missing	63	1009

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 12 YEARS - 17 YEARS

Code or Value	Value Description	Count	Cumulative
0	Not at all difficult	504	504
1	Somewhat difficult	139	643
2	Very difficult	9	652
3	Extremely difficult	7	659
7	Refused	0	659
9	Don't know	0	659
.	Missing	350	1009

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