| Description: | Visual changes develop slowly before or near the onset of headaches |
| Category: | Experience of pain - Online follow-up |
| Participants | 21,321 | Value Type | Categorical (single) | Sexed | Both sexes | Debut | Dec 2020 | |||
| Item count | 21,321 | Item Type | Data | Instances | Singular | Version | Dec 2020 | |||
| Stability | Accruing | Strata | Primary | Array | No |
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Only asked if Field 120065 was answered yes
| Category ID | Description | Items |
|---|---|---|
| 154 | Experience of pain | 129 |
| 100089 | Online follow-up | +662 |
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| Preview | Name | Res ID |
|---|---|---|
 | Online pain questionnaire screenshot E6ai-Ebi | 1375 |
 | Experience of pain questionnaire description | 2718 |
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