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Mean latency (months) from symptom onset to diagnosis of PSP over the past three decades
| Decades | N | Mean ± SD (range) | 95% CI |
|---|---|---|---|
| 1990s | 122 | 43.76 ± 25.63 (0–126) | 39.17–48.36 |
| 2000s | 176 | 40.47 ± 28.73 (0–173) | 36.20–44.75 |
| 2010s | 87 | 29.15 ± 16.80 (0–73) | 25.57–32.73 |
| Total | 385 | 38.96 ± 26.01 (0–173) | 36.36–41.56 |
Abbreviations: CI, confidence interval; N, number of patients; PSP, progressive supranuclear palsy; SD, standard deviation.
