Nowhere does it mention that U.S. manufacturing jobs peaked in 1979 (well before trade with China was more than a statistical rounding error in our total trade figures) and has been trending downward ever since.
Seasonally adjusted figures are calculated to minimize the statistical impact of temporary factors, such as increased hiring during the summer tourist season in Greece, for example.
Study leader Catherine Thomson, head of statistical information at Cancer Research UK, said the figures in particular from Liverpool and Sunderland were "alarmingly high".