National Health and Nutrition Examination Survey

2009-2010 Data Documentation, Codebook, and Frequencies

Kidney Conditions - Urology (KIQ_U_F)

Data File: KIQ_U_F.xpt

First Published: January 2012

Last Revised: NA

Component Description

The NHANES 2009-20010 Kidney Conditions – Urology File provides personal interview data on kidney disease, kidney stones, urinary incontinence, and nocturia. Personal interview data on prostate conditions can be found in the Prostate Conditions File, KIQ_P_F.

Questions KIQ.005 “How often do you have urinary leakage? Would you say …” and KIQ.010 “How much urine do you lose each time? Would you say…” comprise the Incontinence Severity Index (Sandvik, 2000). This index, based on information about frequency in four levels and amount of leakage in three levels, can be multiplied to obtain an index value (1-12). The four-level severity index is based on the following index values: 1-2, slight; 3-6, moderate; 8-9, severe; 10-12, very severe.

Eligible Sample

The target sample for the questions in this section is adults 20 years and older.

Interview Setting and Mode of Administration

Questions on kidney disease, dialysis, kidney stones, and passing a kidney stone (KIQ022, KIQ025, KIQ026, KID028) were asked in the home by trained interviewers using a Computer-Assisted Personal Interviewing (CAPI) system.

Questions on urinary incontinence (KIQ005, KIQ010, KIQ042, KIQ430, KIQ044, KIQ450, KIQ046, KIQ470, KIQ050, KIQ052) and nocturia (KIQ480) were administered in the Mobile Examination Center (MEC) during the MEC Interview by trained interviewers using a CAPI system.

For details on the administration of the Kidney Conditions – Urology (KIQ_U_E) section, please refer to the NHANES 2009-2010 Interviewer Procedure Manuals, MEC Interviewer Exam Manual, and the Kidney Conditions Sample Person and CAPI Questionnaires on the NHANES website.

Quality Assurance & Quality Control

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.

For details on the quality control/quality assurance process for this component, please refer to the NHANES 2009-2010 Interviewer Procedure Manuals on the NHANES website.

Data Processing and Editing

Frequency counts were verified during the preparation of the file.

Analytic Notes

Missing data

Although KIQ005 – KIQ480 were targeted to all participants 20 years and older, data for these questions are missing for 9.6% of individuals who completed the household interview, but did not complete the MEC CAPI.

Appropriate sample weights

Interview weight: KIQ022- KID028

Examination weight: KIQ005-KIQ480

The interview weight should be used when an analysis uses data only from the household interview. If an analysis uses data from the MEC (MEC interview, examination, or laboratory data) exclusively, or in conjunction with the household interview data, the examination weight should be used.

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

Sandvik H, Seim A, Vanvik A, Hunskaar S. A severity index for epidemiological surveys of female urinary incontinence: comparison with 48-hour pad-weighing tests. Neurourol Urodyn 2000; 19: 137-145.

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 20 YEARS - 150 YEARS

KIQ022 - Ever told you had weak/failing kidneys

Variable Name:: KIQ022
SAS Label:: Ever told you had weak/failing kidneys
English Text:: {Have you/Has SP} ever been told by a doctor or other health professional that {you/s/he} had weak or failing kidneys? Do not include kidney stones, bladder infections, or incontinence.
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1	Yes	158	158
2	No	6047	6205	KIQ026
7	Refused	0	6205	KIQ026
9	Don't know	13	6218	KIQ026
.	Missing	0	6218

KIQ025 - Received dialysis in past 12 months

Variable Name:: KIQ025
SAS Label:: Received dialysis in past 12 months
English Text:: In the past 12 months, {have you/has SP} received dialysis (either hemodialysis or peritoneal dialysis)?
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
1	Yes	22	22
2	No	136	158
7	Refused	0	158
9	Don't know	0	158
.	Missing	6060	6218

KIQ026 - Ever had kidney stones?

Variable Name:: KIQ026
SAS Label:: Ever had kidney stones?
English Text:: {Have you/Has SP} ever had kidney stones?
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1	Yes	542	542
2	No	5659	6201	KIQ005
7	Refused	0	6201	KIQ005
9	Don't know	17	6218	KIQ005
.	Missing	0	6218

KID028 - How many times passed a kidney stone?

Variable Name:: KID028
SAS Label:: How many times passed a kidney stone?
English Text:: How many times {have you/has SP} passed a kidney stone?
English Instructions:: ENTER NUMBER OF TIMES
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0 to 80	Range of Values	533	533
777	Refused	0	533
999	Don't know	9	542
.	Missing	5676	6218

KIQ005 - How often have urinary leakage

Variable Name:: KIQ005
SAS Label:: How often have urinary leakage
English Text:: Many people have leakage of urine. The next few questions ask about urine leakage. How often {do you/does SP} have urinary leakage? Would {you/s/he} say . . .
English Instructions:: CAPI INSTRUCTION: HELP SCREEN: Other terms for urinary leakage are not being able to hold your urine until you can reach a toilet, not being able to control your bladder, loss of urine control.
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1	never,	3810	3810	KIQ042
2	less than once a month,	513	4323
3	a few times a month,	445	4768
4	a few times a week, or	247	5015
5	every day and/or night?	290	5305
7	Refused	0	5305	KIQ042
9	Don't know	12	5317	KIQ042
.	Missing	901	6218

KIQ010 - How much urine lose each time?

Variable Name:: KIQ010
SAS Label:: How much urine lose each time?
English Text:: How much urine {do you/does SP} lose each time? Would {you/s/he} say . . .
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
1	drops,	1046	1046
2	small splashes, or	300	1346
3	more?	145	1491
7	Refused	0	1491
9	Don't know	4	1495
.	Missing	4723	6218

KIQ042 - Leak urine during physical activities

Variable Name:: KIQ042
SAS Label:: Leak urine during physical activities
English Text:: During the past 12 months, {have you/has SP} leaked or lost control of even a small amount of urine with an activity like coughing, lifting or exercise?
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1	Yes	1267	1267
2	No	4035	5302	KIQ044
7	Refused	0	5302	KIQ044
9	Don't know	15	5317	KIQ044
.	Missing	901	6218

KIQ430 - How frequently does this occur?

Variable Name:: KIQ430
SAS Label:: How frequently does this occur?
English Text:: How frequently does this occur? Would {you/s/he} say this occurs . . .
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
1	less than once a month,	614	614
2	a few times a month,	374	988
3	a few times a week, or	154	1142
4	every day and/or night?	124	1266
7	Refused	0	1266
9	Don't know	0	1266
.	Missing	4952	6218

KIQ044 - Urinated before reaching the toilet

Variable Name:: KIQ044
SAS Label:: Urinated before reaching the toilet
English Text:: During the past 12 months, {have you/has SP} leaked or lost control of even a small amount of urine with an urge or pressure to urinate and {you/he/she} couldn't get to the toilet fast enough?`
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1	Yes	1225	1225
2	No	4081	5306	KIQ046
7	Refused	0	5306	KIQ046
9	Don't know	10	5316	KIQ046
.	Missing	902	6218

KIQ450 - How frequently does this occur?

Variable Name:: KIQ450
SAS Label:: How frequently does this occur?
English Text:: How frequently does this occur? Would {you/s/he} say this occurs. . .
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
1	less than once a month,	566	566
2	a few times a month,	399	965
3	a few times a week, or	157	1122
4	every day and/or night?	101	1223
7	Refused	0	1223
9	Don't know	2	1225
.	Missing	4993	6218

KIQ046 - Leak urine during nonphysical activities

Variable Name:: KIQ046
SAS Label:: Leak urine during nonphysical activities
English Text:: During the past 12 months, {have you/has SP} leaked or lost control of even a small amount of urine without an activity like coughing, lifting, or exercise, or an urge to urinate?
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1	Yes	386	386
2	No	4911	5297	KIQ048A
7	Refused	1	5298	KIQ048A
9	Don't know	18	5316	KIQ048A
.	Missing	902	6218

KIQ470 - How frequently does this occur?

Variable Name:: KIQ470
SAS Label:: How frequently does this occur?
English Text:: How frequently does this occur? Would {you/s/he} say this occurs . . .
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
1	less than once a month,	124	124
2	a few times a month,	118	242
3	a few times a week, or	68	310
4	every day and/or night?	75	385
7	Refused	0	385
9	Don't know	1	386
.	Missing	5832	6218

KIQ048A - CHECK ITEM

Variable Name:: KIQ048A
English Instructions:: BOX 1. CHECK ITEM: IF 'YES' (CODE '1') IN KIQ042 OR KIQ044 OR KIQ046, CONTINUE WITH KIQ050. OTHERWISE, GO TO KIQ480.
Target:: Both males and females 20 YEARS - 150 YEARS

KIQ050 - How much did urine leakage bother you

Variable Name:: KIQ050
SAS Label:: How much did urine leakage bother you
English Text:: During the past 12 months, how much did {your/her/his} leakage of urine bother {you/her/him}? Please select one of the following choices:
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
1	Not at all,	897	897
2	only a little,	614	1511
3	somewhat,	264	1775
4	very much, or	142	1917
5	greatly	103	2020
7	Refused	0	2020
9	Don't know	4	2024
.	Missing	4194	6218

KIQ052 - How much were daily activities affected

Variable Name:: KIQ052
SAS Label:: How much were daily activities affected
English Text:: During the past 12 months, how much did {your/her/his} leakage of urine affect {your/her/his} day-to-day activities? Please select one of the following choices:
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
1	Not at all,	1594	1594
2	only a little,	258	1852
3	somewhat,	98	1950
4	very much, or	47	1997
5	greatly	25	2022
7	Refused	0	2022
9	Don't know	2	2024
.	Missing	4194	6218

KIQ480 - How many times urinate in night?

Variable Name:: KIQ480
SAS Label:: How many times urinate in night?
English Text:: During the past 30 days, how many times per night did {you/SP} most typically get up to urinate, from the time {you/s/he} went to bed at night until the time {you/he/she} got up in the morning. Would {you/s/he} say
Target:: Both males and females 20 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	0	1665	1665
1	1	2020	3685
2	2	916	4601
3	3	445	5046
4	4	152	5198
5	5 or more?	104	5302
7	Refused	1	5303
9	Don't know	12	5315
.	Missing	903	6218

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