Table 1

 Seven day point prevalence of self reported smokeless tobacco use

199819992000200120022003
NA, not available.
Minor(n = 1800)(n = 1356)(n = 1403)(n = 2442)(n = 2395)(n = 2193)
31.7%26.3%25.7%25.9%27.0%24.8%
Major(n = 312)(n = 348)(n = 454)NA(n = 258)(n = 136)
35.9%34.5%32.6%30.2%36.0%