| Description: | Auto-refractor device ID (right) |
| Category: | Assessment centre ⏵ Eye measures ⏵ Refractometry ⏵ Refractometer 1 |
| Physical measures |
| Participants | 129,687 | Value Type | Text | Sexed | Both sexes | Debut | Jan 2012 | |||
| Item count | 133,694 | Item Type | Data | Instances | Defined (2) | Version | N/A | |||
| Stability | Complete | Strata | Auxiliary | Array | No | Cost Tier | d1 o1 s1 |
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Average length is 2.0 characters, longest is 2.
Instance 1 : First repeat assessment visit (2012-13)
19,499 participants, 19,499 items
Too few values for statistical summary.
| Field ID | Description | Relationship |
|---|---|---|
| 5273 | Auto-refractor device ID (left) | Field 5273 is the opposite-side complement to Current Field |
| Preview | Name | Res ID |
|---|---|---|
 | Auto-refraction measurement | 100110 |
 | Auto-refraction measurement close-up | 100111 |
 | Auto-refraction measurement using ACE | 100242 |
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