Data Structure
ABCD Youth Snellen Vision Screener (SVS)
Version 01Submissions Not Allowed
Short Name: abcd_svs01
Data Type: Clinical Assessments
Categories: Phys Exam
Vision screening
Name, Type, Required, Description, Value Range, Notes
Name | Type | Required | Description | Value Range | Notes |
|---|---|---|---|---|---|
| subjectkey | GUID | Required | The NDAR Global Unique Identifier (GUID) for research subject | NDAR* | |
| src_subject_id | String | Required | Subject ID how it's defined in lab/project | ||
| interview_date | Date | Required | Date on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYY | ||
| interview_age | Integer | Required | Age in months at the time of the interview/test/sampling/imaging. | 0::1440 | Age is rounded to chronological month. If the research participant is 15-days-old at time of interview, the appropriate value would be 0 months. If the participant is 16-days-old, the value would be 1 month. |
| sex | String | Required | Sex of subject at birth | M;F; O; NR | M = Male; F = Female; O=Other; NR = Not reported |
| eventname | String | Required | The event name for which the data was collected | ||
| snellen_aid_y | Integer | Recommended | Do you wear any necessary corrective aids (glasses, contacts)? | 1 ; 0 | 1 = Yes; 0 = No; Starting from the top of the chart, please read aloud one row at a time from left to right until I tell you to stop. If needed, say Keep going. |
| snellen_aidpres_y | Integer | Recommended | Are you wearing them now? Ensure subject is wearing them) | 1 ; 0 | 1 = Yes; 0 = No; Starting from the top of the chart, please read aloud one row at a time from left to right until I tell you to stop. If needed, say Keep going. |
| snellen_va_y | Integer | Recommended | 1. Ensure that the chart is located in a well lit area and readily readable. 2. Verify if the child has corrective lenses and if so, whether he or she is wearing them. 3. Ascertain whether h/she can appropriately respond to stimuli on an iPad screen. Smallest line subject was able to see without error? Line numbers are represented on the right-most side of the chart. | 0 ; 1 ; 2 ; 3 ; 4 ; 5 ; 6 ; 7 ; 8 ; 9 ; 10 ; 11 | 0 = Can't read line 1; 1 = Line 1; 2 = Line 2; 3 = Line 3; 4 = Line 4; 5 = Line 5; 6 = Line 6; 7 = Line 7; 8 = Line 8; 9 = Line 9; 10 = Line 10; 11 = Line 11 // Users should consider variations in visual status (Snellen) before analyzing the neurocognition data. Many children have scores indicating poor vision. |
| vis_flg | Integer | Recommended | Can the participant read the stimuli on the iPad? | 1 ; 2 | 1 = YES = proceed with testing; 2 = NO = stop testing |