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TABLE 1 Prevalence of Sociodemographic Characteristics,Lifetime,and Current(Last 30-Day)Use of sufficient to fund compliance checks <br />Each Tobacco Product at Baseline and Rates of Product Initiation at Follow-up Among Youth and enforcement of regulations <br />Residing in a Jurisdiction With ALA Reduced Tobacco Sales,Grade A or D or F prohibiting tobacco sales to minors <br />Grade A Grade D or F and penalties for violating the law, <br />N(%a) N(%a) features of TRL that have been <br />Sex reported to be necessary to reduce <br />Male 324(49.7) 735(50.9) sales to and use by youth.?Compared <br />Female 328(50.3) 710(49.1) with living in a jurisdiction with poor <br />Ethnicity TRL policy,youth in a jurisdiction <br />Hispanic white 349(53.5) 736(50.9) satisfying these criteria were less <br />Non-Hispanic white 230(35.3) 504(34.9) <br />likely to smoke in high school.In aOther73(11.2) 205(14.2) <br />Parent education prospective follow-up of the cohort, <br />Less than or equal to high school 245(41.3) 460(34.3) the odds of initiation of e-cigarette <br />Some college 219(36.9) 502(37.4) use,with or without past 30-day <br />College or more 129(21.8) 379(28.3) use,and of initiation of cigarette use <br />Prevalent ever tobacco product use at baseline <br />were also lower in well regulated <br />Cigarette 89(13.7) 302(21.0) <br />E-cigarette 123(19.0) 379(26.4) jurisdictions.Stronger associations <br />Hookah 158(24.3) 411 (28.6) among participants still living in their <br />Cigars 69(10.6) 204(14.2) jurisdiction of origin at follow-up <br />Any tobacco product 214(32.9) 564(39.2) evaluation,with consistent exposure <br />Prevalent past 30-d tobacco product use at baseline <br />to the same regulatory environmentCigarette24(3.7) 95(6.6) <br />E-cigarette 56(8.6) 145(10.1) throughout,also suggest that the <br />Hookah 62(9.5) 162(11.3) benefits of good TRL policy extended <br />Cigars 21 (3.2) 55(3.8) both beyond cigarette use to <br />Any tobacco product 107(16.5) 267(18.6) e-cigarette use and into early adult <br />Initiation oftobacco product use(between baseline and follow <br />life at age 18 when the sale of <br />Up)e <br />Cigarette 52(13.1) 156(18.0) products was legal at the time of the <br />E-cigarette 92(24.7) 235(29.7) study.The protective associations <br />Hookah 55(15.9) 146(18.9) were large,with risk lower by one- <br />Cigars 49(12.0) 158(17.1) <br />third to a half in the strong compared <br />Any tobacco product 85(27.7) 198(30) <br />Initiation with past 30-d tobacco product use at follow-upe with weak TRL jurisdictions <br />Cigarette 17(4.3) 52(6.0) depending on the outcome). <br />E-cigarette 17(4.7) 69(8.9) <br />Hookah 16(4.7) 32(4.2) There has been uncertainty <br />Cigars 12(2.9) 36(3.9) <br />Any tobacco product 24(7.9) 78(12.1) regarding the effects of youth access <br />restrictions on cigarette use.6,7,16 <br />a The denominator(652 in grade A;1445 in grade D or F)varies because of missing values in covariates. <br />h Restricted to nonusers of each product(or of any tobacco product)at baseline. Some authors Of prospective Studley <br />in which age-specific prevalence of <br />initiation of e-cigarettes(OR 0.74; compared with D-or F-grade <br />tobacco use was assessed before <br />95%CI 0.55-0.99)and of initiation associations with cigarette and and after regulatory intervention <br />with past 30-day use(OR 0.45;95%CI e-cigarette initiation at follow-up(and to restrict youth access found <br />0.23-0.90)were also lower in A-grade ofinitiation of e-cigarettes with past <br />reductions in cigarette use,17-20 but <br />than D-or F-grade jurisdictions.In 30-day use)than in the entire sample <br />others found no benefit.21,22 Authors <br />results not shownsensitivityanalysesadjustingfortime ( The protective <br />of 1 review of studies that reported <br />association of A rade residence with changes in smoking associated with <br />since turning 18 at follow-up,there g <br />youth access restrictions found no <br />was no change in the protective effect initiation of cigar use was similar in <br />magnitude to the association with relationship of vendor compliance <br />estimate of living in awell-regulated or of changes in vendor compliance, <br />A-jurisdiction results not <br />cigarette and e-cigarette use but was <br />grade) <br />not statistically significant. with smoking prevalence in a <br />shown).Participants still living in meta-analysis of available studieS,6 <br />their jurisdiction of origin at follow-up perhaps because the restriction of <br />evaluation would have had consistent <br />DISCUSSION <br />commercial access resulted in a shift <br />exposure to the same regulatory to social sources of cigarettes such <br />environment.In this sample,there Central features of the ALA TRL as older friends or siblings.Authors <br />were stronger protective A-grade grade include a licensing fee of other observational studies have <br />Downloaded from www.aappublications.org/news by guest on May 7,2019 <br />4 ASTOR et al