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Comparison of study design features
| Study 1 (TESS) | Study 2 (RTI) | |
|---|---|---|
| Field period | 1/31/13-2/8/13 | 3/6/13-3/18/13 |
| Panel recruitment rate | 15% | 15% |
| Study completion rate | 66% | 58% |
| Sample size (who answered SRH) | 1347 | 499 |
| Wording of SRH | Would you say your health in general is… | In general, would you say your health is… |
| Location of SRH in the questionnaire | First question | After 35–47 questions (depending on skip patterns) |
