PMC3037056_01
PMC3037056_02
Share of menthol brand preference among Japanese adolescents by gender (1996 & 2000) (data from).. **Two sample test for equality of proportions significant difference among gender groups at the 95% significance level (p < .001 in 1996 & p < .001 in 2000).
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f3-ijerph-08-00001
Surveillance data collected among a sample of high school students in Japan indicates a significantly higher rate of menthol use among high school aged girls versus boys in both 1996 (p < 0.01) and 2000 (p < 0.01) (see Figure 3).
PMC3037056_03
Japanese female smoking prevalence:Three year moving average of female Japanese smoking prevalence using 10-year age groups.
ijerph-08-00001f4.jpg
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f4-ijerph-08-00001
Smoking prevalence among the 30-39 year old cohort began to increase in 1994 with an APC of 9.26 from 1994-1997 and the 40-49 year old female cohort had increasing smoking prevalence beginning in 1996 with an APC of 3.86 from 1996-2004 (see Figure 4).