Data from the US National Cancer Institute's SEER program show that the incidence of non-Hodgkin's Lymphoma increased in the US in the 1970s and '80s in men but then either stopped increasing (white men) or actually declined (black men) in the 1990s. Rates in women overall were lower than men and showed parallel increases in the 1970s through the 1990s. Rates in black women continue to increase.

The mortality rate for NHL increased steadily throught the late 1990s but then reversed in the late 1990s.

The arrows identify statistically significant patterns for the end segment of each curve. Where end segments lack arrows (e.g., incidence for white males), the rate is not changing significantly. Arrows pointing upward indicate a significant increase in rate; downward arrows identify decreasing rates.

These graphs are adaptations of a graph available through the SEER website. There does not appear to be a way to link directly to the graph and instead it must be found via a search on the search page http://seer.cancer.gov/cgi-bin/csr/1975_2001/search.pl. Specify "incidence" for statistic type, "non-Hodgkin's Lymphoma" for cancer site and "any race/ethnicity" for race/ethnicity. After performing the search, select graph 305.