WLS Codebooks
Note: Codebooks contain frequency data from the private data release. For some variables, these differ from the frequencies in the public release. Variables that differ between the public and private versions include "(not available on public release)" as part of the variable description, or a note indicating the difference between the public and private versions.
In Person: Vision Screener
JVIS Vision Screener Module OVERVIEW The Vision Screener Module, which was administered to a randomly selected 15% sub-sample of participants, is new to the 2010 collection wave. It features a check of participants' vision using an 11-line Snellen chart much like those preferred by eye care professionals. Each line on the chart includes different combinations of letters. Moreover, with each descending line, the number of letters increases as their (font) size decreases. The vision check is administered as follows: first, the interviewer sets up an easel; then, the interviewer places the participant's chair 10 feet away from the easel and directly facing it; the participant is subsequently invited to sit down in the chair, after which the Snellen chart is placed on the easel; finally, the interviewer instructs the participant to "please look at this chart and read the lowest complete line you can see. While you are doing this activity, please try to keep your back against the back of the chair [if the chair does not have a back the participant is asked to sit up as straight as they can]." If the participant is unable to correctly read the complete line they select, the interviewer asks them to "please read the line above that one." Conversely, if the participant correctly reads the complete line they select, the interviewer encourages them to try reading the line below it. The interviewer continues prompting the participant to read adjacent lines until the lowest one they can correctly read is determined. Note that this module was only administered to members of the sub-sample who were interviewed in person, did not report an inability to see when asked about their vision in the Health Module, and who had the use of their hands (the vision check preceded a cognitive task that involved using a computer keyboard). BRIEF VARIABLE DESCRIPTIONS _____________________________________________________________________ HEPRSTAT-HEPRREL: Module-Level Status Variables. HVI01RE: Does Participant Belong to the 15% Sub-Sample Selected to Complete the Vision Screener Module? HVI02RE: Did Participant Satisfy the Conditions Necessary to Having Their Vision Screened? HVI03RE: Lowest Line on Snellen Chart Participant Was Able to Correctly Read HVI04RER-HVI14RER: Participant's Capability for Correctly Reading Each of the 11 Lines on the Snellen Chart
heprstat: Was the Vision Screener Module completed by Participant alone, with help, or by proxy?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: y_rogflag, y_eprproxy1, y_eprhelp0, capiproxy, y_proxy, y_ivwloc
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT ASKED OF PARTICIPANT OVER TELEPHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-4 | NOT ASCERTAINED | 0 | 1 | 1 |
-2 | 2324 | 2720 | 5044 | |
1 | R COMPLETED ALONE | 393 | 432 | 825 |
2 | R COMPLETED ALONE WITH SOMEONE ELSE IN THE ROOM | 46 | 25 | 71 |
heprrel: Relationship of Vision Screener Module helper or proxy to Participant.
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HEPRSTAT, y_eprproxy1, y_eprhelp0, y_eprhelp1, y_eprhelp2_hfn, y_eprhelp3, y_h1fn-y_h4fn, y_pfn, prxyfnam, y_p1fn-y_p5fn, y_prel, prxyrel, y_p1rel-y_p5rel
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT ASKED OF PARTICIPANT OVER TELEPHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-4 | NOT ASCERTAINED | 0 | 1 | 1 |
-2 | 2763 | 3177 | 5940 |
hvi01re: Does Participant belong to the 15% sub-sample randomly selected to complete the Vision Screener Module?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: y_rogflag
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
1 | YES | 450 | 471 | 921 |
2 | NO | 2324 | 2720 | 5044 |
hvi02re: Did Participant satisfy the conditions necessary to have their vision screened?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI01RE, y_x4, y_ivwloc, y_vis1
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT ASKED OF PARTICIPANT OVER TELEPHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-2 | 2324 | 2720 | 5044 | |
1 | YES | 428 | 447 | 875 |
2 | NO | 11 | 11 | 22 |
hvi03re: Lowest line on the Snellen chart Participant was able to read correctly.
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, HVI04RER-HVI14RER
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-3 | REFUSED | 1 | 1 | 2 |
-2 | 2335 | 2731 | 5066 | |
1 | TOPMOST | 4 | 8 | 12 |
3 | 1 | 3 | 4 | |
4 | 11 | 3 | 14 | |
5 | 17 | 17 | 34 | |
6 | 43 | 52 | 95 | |
7 | 82 | 88 | 170 | |
8 | 87 | 97 | 184 | |
9 | 138 | 134 | 272 | |
10 | 25 | 34 | 59 | |
11 | BOTTOMMOST | 19 | 10 | 29 |
hvi04rer: Was Participant able to correctly read the first (topmost) line of the Snellen chart?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, y_vis2_a
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-3 | REFUSED | 1 | 1 | 2 |
-2 | 2335 | 2731 | 5066 | |
1 | YES, BUT NOT LOWEST LINE READ CORRECTLY | 423 | 438 | 861 |
2 | YES, LOWEST LINE READ CORRECTLY | 4 | 8 | 12 |
hvi05rer: Was Participant able to correctly read the second line from the top of the Snellen chart?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, y_vis2_:a-b
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-2 | 2336 | 2732 | 5068 | |
1 | YES, BUT NOT LOWEST LINE READ CORRECTLY | 423 | 438 | 861 |
3 | NO | 4 | 8 | 12 |
hvi06rer: Was Participant able to correctly read the third line from the top of the Snellen chart?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, y_vis2_:a-c
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-2 | 2336 | 2732 | 5068 | |
1 | YES, BUT NOT LOWEST LINE READ CORRECTLY | 422 | 435 | 857 |
2 | YES, LOWEST LINE READ CORRECTLY | 1 | 3 | 4 |
3 | NO | 4 | 8 | 12 |
hvi07rer: Was Participant able to correctly read the fourth line from the top of the Snellen chart?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, y_vis2_:a-d
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-2 | 2336 | 2732 | 5068 | |
1 | YES, BUT NOT LOWEST LINE READ CORRECTLY | 411 | 432 | 843 |
2 | YES, LOWEST LINE READ CORRECTLY | 11 | 3 | 14 |
3 | NO | 5 | 11 | 16 |
hvi08rer: Was Participant able to correctly read the fifth line from the top of the Snellen chart?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, y_vis2_:a-e
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-2 | 2336 | 2732 | 5068 | |
1 | YES, BUT NOT LOWEST LINE READ CORRECTLY | 394 | 415 | 809 |
2 | YES, LOWEST LINE READ CORRECTLY | 17 | 17 | 34 |
3 | NO | 16 | 14 | 30 |
hvi09rer: Was Participant able to correctly read the sixth line from the top of the Snellen chart?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, y_vis2_:a-f
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-2 | 2336 | 2732 | 5068 | |
1 | YES, BUT NOT LOWEST LINE READ CORRECTLY | 351 | 363 | 714 |
2 | YES, LOWEST LINE READ CORRECTLY | 43 | 52 | 95 |
3 | NO | 33 | 31 | 64 |
hvi10rer: Was Participant able to correctly read the seventh line from the top of the Snellen chart?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, y_vis2_:a-g
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-2 | 2336 | 2732 | 5068 | |
1 | YES, BUT NOT LOWEST LINE READ CORRECTLY | 269 | 275 | 544 |
2 | YES, LOWEST LINE READ CORRECTLY | 82 | 88 | 170 |
3 | NO | 76 | 83 | 159 |
hvi11rer: Was Participant able to correctly read the eighth line from the top of the Snellen chart?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, y_vis2_:a-h
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-2 | 2336 | 2732 | 5068 | |
1 | YES, BUT NOT LOWEST LINE READ CORRECTLY | 182 | 178 | 360 |
2 | YES, LOWEST LINE READ CORRECTLY | 87 | 97 | 184 |
3 | NO | 158 | 171 | 329 |
hvi12rer: Was Participant able to correctly read the ninth line from the top of the Snellen chart?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, y_vis2_:a-i
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-2 | 2336 | 2732 | 5068 | |
1 | YES, BUT NOT LOWEST LINE READ CORRECTLY | 44 | 44 | 88 |
2 | YES, LOWEST LINE READ CORRECTLY | 138 | 134 | 272 |
3 | NO | 245 | 268 | 513 |
hvi13rer: Was Participant able to correctly read the tenth line from the top of the Snellen chart?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, y_vis2_:a-j
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-2 | 2336 | 2732 | 5068 | |
1 | YES, BUT NOT LOWEST LINE READ CORRECTLY | 19 | 10 | 29 |
2 | YES, LOWEST LINE READ CORRECTLY | 25 | 34 | 59 |
3 | NO | 383 | 402 | 785 |
hvi14rer: Was Participant able to correctly read the eleventh (bottommost) line of the Snellen chart?
Data source: Graduate Participant or Proxy
Collected in: 2011
Mode: In person & telephone
Source variables: HVI02RE, y_vis2_:a-k
Frequencies | ||||
---|---|---|---|---|
Value | Label | Male | Female | Total |
. | System missing - NR | 2146 | 2019 | 4165 |
-30 | NOT PART OF MOSAQ | 68 | 116 | 184 |
-28 | NOT RELEVANT TO PARTICIPANT INTVD. BY PHONE | 9 | 10 | 19 |
-27 | NOT ASKED OF PROXY | 2 | 3 | 5 |
-5 | PARTIAL INTERVIEW | 3 | 0 | 3 |
-2 | 2336 | 2732 | 5068 | |
2 | YES, LOWEST LINE READ CORRECTLY | 19 | 10 | 29 |
3 | NO | 408 | 436 | 844 |