Table of Contents

Component Description

The NHANES 2013-2014 Kidney Conditions – Urology section provides personal interview data on kidney disease, kidney stones, urinary incontinence, and nocturia.

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

Participants aged 20 years and older are eligible for this section.

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 the Computer-Assisted Personal Interview (CAPI) system. As previously done, KID.028 is a derived variable based on KIQ.028G, which records the participant’s report of passing kidney stone(s) and KIQ.028Q, which records the number of times that kidney stones were passed.

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

For details on the administration of the Kidney Conditions – Urology (KIQ_U_H) section, please refer to the NHANES 2013-2014 Interviewer Procedure Manual, MEC Interviewer Procedures 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 2013-2014 Interviewer Procedure Manuals available 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 nearly 12% 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

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 187 187
2 No 5574 5761 KIQ026
7 Refused 0 5761 KIQ026
9 Don't know 8 5769 KIQ026
. Missing 0 5769

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 20 20
2 No 167 187
7 Refused 0 187
9 Don't know 0 187
. Missing 5582 5769

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 535 535
2 No 5223 5758 KIQ005
7 Refused 0 5758 KIQ005
9 Don't know 11 5769 KIQ005
. Missing 0 5769

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 24 Range of Values 520 520
777 Refused 0 520
999 Don't know 15 535
. Missing 5234 5769

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, 3513 3513 KIQ042
2 less than once a month, 463 3976
3 a few times a month, 526 4502
4 a few times a week, or 293 4795
5 every day and/or night? 295 5090
7 Refused 2 5092 KIQ042
9 Don't know 4 5096 KIQ042
. Missing 673 5769

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, 1057 1057
2 small splashes, or 341 1398
3 more? 170 1568
7 Refused 1 1569
9 Don't know 8 1577
. Missing 4192 5769

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 1169 1169
2 No 3920 5089 KIQ044
7 Refused 1 5090 KIQ044
9 Don't know 6 5096 KIQ044
. Missing 673 5769

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, 523 523
2 a few times a month, 350 873
3 a few times a week, or 188 1061
4 every day and/or night? 105 1166
7 Refused 0 1166
9 Don't know 3 1169
. Missing 4600 5769

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 1087 1087
2 No 3998 5085 KIQ046
7 Refused 1 5086 KIQ046
9 Don't know 9 5095 KIQ046
. Missing 674 5769

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, 459 459
2 a few times a month, 347 806
3 a few times a week, or 163 969
4 every day and/or night? 114 1083
7 Refused 0 1083
9 Don't know 4 1087
. Missing 4682 5769

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 468 468
2 No 4620 5088 KIQ048A
7 Refused 1 5089 KIQ048A
9 Don't know 7 5096 KIQ048A
. Missing 673 5769

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, 134 134
2 a few times a month, 145 279
3 a few times a week, or 100 379
4 every day and/or night? 89 468
7 Refused 0 468
9 Don't know 0 468
. Missing 5301 5769

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, 574 574
2 only a little, 636 1210
3 somewhat, 326 1536
4 very much, or 179 1715
5 greatly 114 1829
7 Refused 0 1829
9 Don't know 1 1830
. Missing 3939 5769

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, 1201 1201
2 only a little, 394 1595
3 somewhat, 140 1735
4 very much, or 67 1802
5 greatly 27 1829
7 Refused 0 1829
9 Don't know 0 1829
. Missing 3940 5769

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 1544 1544
1 1 1941 3485
2 2 947 4432
3 3 431 4863
4 4 123 4986
5 5 or more? 106 5092
7 Refused 0 5092
9 Don't know 3 5095
. Missing 674 5769