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Response tracking (median and 95% confidence intervals).
| PD | Healthy | |
|---|---|---|
| Total responses for both odors (out of 20) | 12 (7–17) | 16 (13–19) |
| Responses for coffee (out of 10) | 8 (5–10) | 10 (9–10) |
| Mean reaction time for coffee (seconds) | 3.2 (2.6–3.8) | 3.1 (2.6–3.7) |
| Responses for vanillin (out of 10) | 3.5 (2–8) | 8 (5–9) |
| Mean reaction time for vanillin (seconds) | 2.1 (1–4) | 2.9 (2.1–3.6) |
