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Featured researches published by Michelle M. Johns.


American Journal of Preventive Medicine | 2017

Social Stress and Substance Use Disparities by Sexual Orientation Among High School Students

Richard Lowry; Michelle M. Johns; Leah Robin; Laura Kann

INTRODUCTION Sexual minority youth often experience increased social stress due to prejudice, discrimination, harassment, and victimization. Increased stress may help explain the disproportionate use of substances like tobacco, alcohol, marijuana, and other illicit drug use by sexual minority youth. This study examined the effect of social stress on substance use disparities by sexual orientation among U.S. high school students. METHODS In 2016, data from the national 2015 Youth Risk Behavior Survey, conducted among a nationally representative sample of 15,624 U.S. high school students, were analyzed to examine the effect of school-related (threatened/injured at school, bullied at school, bullied electronically, felt unsafe at school) and non-school-related (forced sexual intercourse, early sexual debut) social stress on substance use disparities by sexual orientation, by comparing unadjusted prevalence ratios (PRs) and adjusted (for social stressors, age, sex, and race/ethnicity) prevalence ratios (APRs). RESULTS Unadjusted PRs reflected significantly (p<0.05 or 95% CI did not include 1.0) greater substance use among students who identified as lesbian/gay or bisexual than students who identified as heterosexual. APRs for injection drug use decreased substantially among lesbian/gay (PR=12.02 vs APR=2.14) and bisexual (PR=2.62 vs APR=1.18) students; the APR for bisexual students became nonsignificant. In addition, APRs among both lesbian/gay and bisexual students decreased substantially and were no longer statistically significant for cocaine, methamphetamine, and heroin use. CONCLUSIONS School-based substance use prevention programs might appropriately include strategies to reduce social stress, including policies and practices designed to provide a safe school environment and improved access to social and mental health services.


Obesity | 2017

Harassment and mental distress among adolescent female students by sexual identity and BMI or perceived weight status

Michelle M. Johns; Richard Lowry; Zewditu Demissie; Leah Robin

Sexual minority girls (lesbian/bisexual) and girls with overweight/obesity experience high rates of discrimination and mental distress. This study explored whether BMI or perceived weight status might compound sexual minority girls’ risk for harassment and mental distress.


Journal of Lgbt Youth | 2018

Health risks among discordant heterosexual high school students

Christopher R. Harper; Heather B. Clayton; Jack Andrzejewski; Michelle M. Johns

ABSTRACT Limited information exists on heterosexual youth with sexual contact with same-sex partners in the United States (i.e., discordant heterosexual). We compared the prevalence of health risks between discordant heterosexual, heterosexual with only opposite-sex sexual contact, lesbian/gay, and bisexual students using the 2015 national Youth Risk Behavior Survey (YRBS). Nationwide, 3.2% of students were identified as discordant heterosexuals. The prevalence of several risk behaviors was significantly higher among discordant heterosexual students than their heterosexual peers with only opposite-sex sexual contact. Clinicians should consider sexual identity and sex of sexual partners when conducting risk-assessments to ensure they appropriately target populations for intervention.


JAMA Pediatrics | 2018

Nonconforming Gender Expression and Associated Mental Distress and Substance Use Among High School Students

Richard Lowry; Michelle M. Johns; Allegra R. Gordon; S. Bryn Austin; Leah Robin; Laura Kann

Importance The cultural roles and expectations attributed to individuals based on their sex often shape health behaviors and outcomes. Gender nonconformity (GNC) (ie, gender expression that differs from societal expectations for feminine or masculine appearance and behavior) is an underresearched area of adolescent health that is often linked to negative health outcomes. Objective To examine the associations of GNC with mental distress and substance use among high school students. Design, Setting, and Participants Cross-sectional study based on data from the Youth Risk Behavior Survey (YRBS) conducted in 2015. The setting was 3 large urban US school districts (2 in California and 1 in Florida). Participants were a racially/ethnically diverse population-based sample of 6082 high school students representative of all public school students in grades 9 through 12 attending these 3 school districts. Main Outcomes and Measures Sex-stratified adjusted prevalence ratios (APRs) (adjusted for race/ethnicity, grade, and sexual identity) for high gender-nonconforming students (very/mostly/somewhat feminine male students or very/mostly/somewhat masculine female students) and moderate gender-nonconforming students (equally feminine and masculine students) relative to a referent group of low gender-nonconforming students (very/mostly/somewhat masculine male students or very/mostly/somewhat feminine female students). Results Among 6082 high school students, 881 (15.9%) were white, 891 (19.1%) black, 3163 (55.1%) Hispanic, and 1008 (9.9%) other race/ethnicity. Among female students (2919 [50.0% of the study population]), moderate GNC was significantly associated with feeling sad and hopeless (APR, 1.22; 95% CI, 1.05-1.41), seriously considering attempting suicide (APR, 1.41; 95% CI, 1.14-1.74), and making a suicide plan (APR, 1.52; 95% CI, 1.22-1.89); however, substance use was not associated with GNC. Among male students (3139 [50.0% of the study population]), moderate GNC was associated with feeling sad and hopeless (APR, 1.55; 95% CI, 1.25-1.92); high GNC was associated with seriously considering attempting suicide (APR, 1.72; 95% CI, 1.16-2.56), making a suicide plan (APR, 1.79; 95% CI, 1.17-2.73), and attempting suicide (APR, 2.78; 95% CI, 1.75-4.40), as well as nonmedical use of prescription drugs (APR, 1.81; 95% CI, 1.23-2.67), cocaine use (APR, 2.84; 95% CI, 1.80-4.47), methamphetamine use (APR, 4.52; 95% CI, 2.68-7.61), heroin use (APR, 4.59; 95% CI, 2.48-8.47), and injection drug use (APR, 8.05; 95% CI, 4.41-14.70). Conclusions and Relevance This study suggests mental distress is associated with GNC among female and male students. Substance use also appeared to be strongly associated with GNC among male students. These findings underscore and suggest the importance of implementing school-based programs to prevent substance use and promote student mental health that are inclusive of gender diversity in students.


American Journal of Preventive Medicine | 2018

Impact of U.S. Antismoking TV Ads on Spanish-Language Quitline Calls

Lei Zhang; Stephen Babb; Michelle M. Johns; Nathan Mann; Jesse Thompson; Asma Shaikh; Rene Lavinghouze; Robert Rodes; Ann Malarcher

INTRODUCTION Cigarette smoking is a major preventable cause of disease and death among U.S. Hispanics. Tobacco-cessation quitlines have been shown to increase quitting among Hispanics. However, the use of quitlines by this population remains low, especially among Spanish-speaking Hispanics. This study evaluates the promotion of 1-855-DÉJELO-YA (a quitline portal that routes callers to state-specific Spanish-language services) implemented as part of the Centers for Disease Control and Preventions national Tips From Former Smokers® (Tips®) campaign. Additionally, this study examines how media content impacted calls to 1-855-DÉJELO-YA. METHODS Using National Cancer Institute data on calls to 1-855-DÉJELO-YA from February 2013 to December 2014, multivariate linear regressions were conducted of weekly area code-level call volume as a function of media market-level Gross Rating Points for Tips Spanish-language TV ads tagged with 1-855-DÉJELO-YA. The models were adjusted for covariates, including market-level population characteristics and state fixed effects. The data were analyzed from October 2017 through April 2018. RESULTS Greater exposure to Tips Spanish-language ads was associated with increased calls to 1-855-DÉJELO-YA (p<0.001). On average, each additional 100 Tips Gross Rating Points per media market increased calls by 0.56 (95% CI=0.45, 0.67) calls/week/area code, representing ≅ 974 additional calls beyond the baseline. Media messages highlighting health consequences of smoking had a greater effect size than messages highlighting health effects of secondhand smoke. CONCLUSIONS A national Spanish-language quitline number could be a useful cessation resource for Spanish-speaking cigarette smokers. Opportunities exist to increase use of this number through a national Spanish-language media campaign, particularly by focusing campaign messages on the health consequences of smoking.


The Journal of Primary Prevention | 2018

Protective Factors Among Transgender and Gender Variant Youth: A Systematic Review by Socioecological Level

Michelle M. Johns; Oscar Beltran; Heather L. Armstrong; Paula E. Jayne; Lisa C. Barrios


Journal of Adolescent Health | 2017

The Effect of Minority Stress on Substance Use Disparities Among Sexual Minority US High School Students

Richard Lowry; Michelle M. Johns; Leah Robin; Laura Kann


Journal of Adolescent Health | 2018

Looking Beyond Sexual Identity: Implications of Changes in Reported Identity, Attraction, and Sex of Sexual Partners among High School Students

Catherine N. Rasberry; Christopher R. Harper; Michelle M. Johns; Susan Hocevar Adkins; Catherine A. Lesesne; Ganna Sheremenko; India D. Rose


Journal of Adolescent Health | 2018

The Protective Role of Parental Monitoring and Family Rules in Sexual Minority Youth Risk Behavior

Patricia Dittus; Christopher R. Harper; Riley J. Steiner; Michelle M. Johns; Kathleen A. Ethier


Journal of Adolescent Health | 2017

Differences in Experiences of Harassment and Mental Distress Among Adolescent Girls by Sexual Minority and Actual/ Perceived Weight Status: Findings From a Nationally Representative Sample of High School Students

Michelle M. Johns

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Leah Robin

Centers for Disease Control and Prevention

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Richard Lowry

Centers for Disease Control and Prevention

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Christopher R. Harper

Centers for Disease Control and Prevention

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Laura Kann

Centers for Disease Control and Prevention

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Paula E. Jayne

Centers for Disease Control and Prevention

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Riley J. Steiner

Centers for Disease Control and Prevention

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Allegra R. Gordon

Boston Children's Hospital

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Ann Malarcher

Centers for Disease Control and Prevention

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Asma Shaikh

Research Triangle Park

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Catherine A. Lesesne

Centers for Disease Control and Prevention

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