Table of Contents

Locator Record

Title: Kidney Conditions - Urology (KIQ_U_E )
Contact Number: 1-866-441-NCHS
Years of Content: 2007 - 2008
First Published: September, 2009
Revised: NA
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:Personal interview data on kidney disease, kidney stones, urinary incontinence, and nocturia
Record Source: NHANES 2007 - 2008
Survey Methodology: NHANES 2007 - 2008 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 NHANES 2007-2008 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_E.

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 et al, 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, and KID028) were asked during the household interview using an interviewer-administered Computer Assisted Personal Interviewing (CAPI) system.

Questions on urinary incontinence and nocturia (KIQ042–KIQ480) were asked in the mobile examination center (MEC) Interview using a (CAPI) system.

For details on the administration of the Kidney Conditions – Urology (KIQ_U_E) section, please refer to the NHANES 2007-08 Interviewer Procedure Manuals, MEC Interviewer Exam Manual, and the Kidney Conditions Sample Person and Computer Assisted Personal Interview (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 QA/QC process for this component, please refer to the NHANES 2007-08 Interviewer Procedure Manuals and the MEC Interviewer Exam Manual on the NHANES website.

Data Processing and Editing

Frequency counts were verified during the preparation of the file.

Analytic Notes

New in 2007-08
Two new questions were added to the KIQ_U section: KIQ.026 “{Have you/Has SP} ever had kidney stones?” and KIQ.028 “How many times {have you/has SP} passed a kidney stone?”

Missing Data
Although KIQ042 – KIQ480 were targeted to all participants 20 years and older, data for these questions are missing for 11.9% of individuals who completed the household interview, but did not complete the MEC CAPI.

Appropriate Sample Weights
Interview weight:
KIQ022, KIQ025, KIQ026, KID028

Examination weight:
KIQ042 – 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 Analytic Guidelines for further details on the use of sample weights and other analytic issues. The Analytic Guidelines are available on the NHANES website.

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 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 179 179
2 No 5745 5924 KIQ026
7 Refused 0 5924 KIQ026
9 Don't know 11 5935 KIQ026
. Missing 0 5935

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 Skip to Item
1 Yes 22 22
2 No 157 179
7 Refused 0 179
9 Don't know 0 179
. Missing 5756 5935

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 539 539
2 No 5370 5909 KIQ005
7 Refused 0 5909 KIQ005
9 Don't know 26 5935 KIQ005
. Missing 0 5935

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 Skip to Item
0 to 80 Range of Values 528 528
777 Refused 0 528
999 Don't know 11 539
. Missing 5396 5935

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, 3677 3677 KIQ042
2 less than once a month, 561 4238
3 a few times a month, 466 4704
4 a few times a week, or 228 4932
5 every day and/or night? 267 5199
7 Refused 2 5201 KIQ042
9 Don't know 28 5229 KIQ042
. Missing 706 5935

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 Skip to Item
1 drops, 1051 1051
2 small splashes, or 322 1373
3 more? 141 1514
7 Refused 0 1514
9 Don't know 8 1522
. Missing 4413 5935

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 1276 1276
2 No 3937 5213 KIQ044
7 Refused 2 5215 KIQ044
9 Don't know 13 5228 KIQ044
. Missing 707 5935

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 Skip to Item
1 less than once a month, 594 594
2 a few times a month, 405 999
3 a few times a week, or 151 1150
4 every day and/or night? 119 1269
7 Refused 0 1269
9 Don't know 7 1276
. Missing 4659 5935

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 1214 1214
2 No 3991 5205 KIQ046
7 Refused 2 5207 KIQ046
9 Don't know 21 5228 KIQ046
. Missing 707 5935

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 Skip to Item
1 less than once a month, 521 521
2 a few times a month, 403 924
3 a few times a week, or 173 1097
4 every day and/or night? 112 1209
7 Refused 0 1209
9 Don't know 5 1214
. Missing 4721 5935

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 398 398
2 No 4795 5193 KIQ048A
7 Refused 2 5195 KIQ048A
9 Don't know 33 5228 KIQ048A
. Missing 707 5935

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 Skip to Item
1 less than once a month, 122 122
2 a few times a month, 130 252
3 a few times a week, or 71 323
4 every day and/or night? 71 394
7 Refused 0 394
9 Don't know 4 398
. Missing 5537 5935

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 Skip to Item
1 Not at all, 796 796
2 only a little, 627 1423
3 somewhat, 310 1733
4 very much, or 166 1899
5 greatly 104 2003
7 Refused 0 2003
9 Don't know 13 2016
. Missing 3919 5935

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 Skip to Item
1 Not at all, 1551 1551
2 only a little, 252 1803
3 somewhat, 120 1923
4 very much, or 63 1986
5 greatly 19 2005
7 Refused 0 2005
9 Don't know 11 2016
. Missing 3919 5935

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 Skip to Item
0 0 1765 1765
1 1 1774 3539
2 2 995 4534
3 3 445 4979
4 4 133 5112
5 5 or more? 95 5207
7 Refused 2 5209
9 Don't know 16 5225
. Missing 710 5935