highly significantp-value = 0.001
It appears that ML increased from about 0.42% in 1997 to 0.70% in 2001 largely due to cases of NHL (2.0–3.7%) and HD (0.6–1.3%) whereas the incidence of BL remained constant, which differences were statistically highly significant (p-value = 0.001) [Figure 2 ].