Figure 4: Intervals (mean ± SD) from swallow onset to the onset and end of HTT. Swallow onset was defined as time 0. HTT durations were significantly longer in stroke survivors than controls, and significantly longer with the two-phase food than other foods (P < 0.010). The interval from swallow onset to the end of the HTT did not differ significantly among food types (P = 0.080). HTT, hypopharyngeal transit time