The percentage of those of Hispanic origin in the United States who were of Mexican background in 2013. Another 9.5 percent were of Puerto Rican background, 3.7 percent Cuban, 3.7 percent Salvadoran, 3.3 percent Dominican and 2.4 percent Guatemalan.
Onset of effects occurs within 30-60 minutes after taking Concerta. After that, duration of action lasts from 8-12 hours. And the average times to reach peak plasma concentrations across all doses of Concerta occur between 6-10 hour s. The average half-life for Concerta in adults is about 3.5 hours.
Globe Staff August 07, 2015. Itâs two hours until showtime, and James Taylor is finally sitting still in his dressing room at Fenway Park on Thursday afternoon. Itâs already been a nonstop day with sound checks and meet-and-greets, thereâs probably no time for a nap, and heâs wondering how the concert will go.