Table 3.
Baseline temporal speech measures in nfvPPA, lvPPA and healthy controls
| nfvPPA | lvPPA | HC | F | P | Post-hoc | |
|---|---|---|---|---|---|---|
| PVI_SW | 94.2 ± 28.7 | 95.3 ± 29.9 | 106.4 ± 16.4 | 2.436 | 0.09 | – |
| PVI_WS | 111.7 ± 22.1 | 120.1 ± 17.33 | 125.0 ± 16.6 | 4.643 | 0.01 | nfvPPA < HC |
| Duration_SW | 772.1 ± 207.6 | 684.5 ± 154.1 | 590.2 ± 72.1 | 12.209 | <0.001 | nfvPPA > lvPPA > HC |
| Duration_WS | 765.0 ± 214.7 | 638.6 ± 117.5 | 588.6 ± 75.5 | 13.437 | <0.001 | nfvPPA > lvPPA, HC |
PVI (Pairwise variability index) and duration (milliseconds) values are shown as mean ± standard deviation. lvPPA, logopenic variant primary progressive aphasia; nfvPPA, non-fluent variant primary progressive aphasia; SW, strong–weak stressed words (e.g. dinosaur); WS, weak–strong stressed words (e.g. banana). Missing data: PVI_SW missing for 2 nfvPPA, 2 lvPPA, 5 HC; PVI_WS missing for 2 nfvPPA, 1 lvPPA, 5 HC; Duration_SW missing for 2 nfvPPA; 2 lvPPA; 5 HC; Duration_WS missing for 2 nfvPPA; 1 lvPPA and 6 HC. For indivduals tested before July 2012, only the six words from the SYDBAT were available (two SW, four WS).