A description of the type of instrument being used.
| ID | Term | Description |
|---|---|---|
| 1 | Questionnaire | e.g. CAPI, CATI, mailed self-completion, etc. |
| 2 | Clinical protocol | e.g., spirometer, blood pressure monitor |
| 3 | Cognitive test | e.g., recall, memory, recognition |
| 4 | Educational test | e.g., British Ability Scales |
| 5 | Physical test | e.g., timed walk |
| 6 | Diary | e.g., food diary, expenditure diary |
| 7 | Event history calendar | See http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2798968/ |
| 8 | Qualitative protocol | e.g., interview transcripts |
| 9 | Linked data | e.g., administrative records, Census, enviroment data, external data (i.e., not collected as part of the study), usually linked via respondent's geography or NINO. Do not confuse with linked data (RDF). |
| 10 | Spatial data | e.g., marker of location, may include altitude |
| 11 | Device/app | e.g., GPS positioning, pedometer |