Smoking Trajectories Among Monoracial and Biracial Black Adolescents and Young Adults.

INTRODUCTION: Cigarette smoking trajectories were assessed among monorace Blacks, Black-American Indians, Black-Asians, Black-Hispanics, and Black-Whites. METHOD: We used a subsample of nationally representative data obtained from the National Longitudinal Study of Adolescent Health (Add Health). The sample consisted of adolescents who were in Grades 7 - 12 in 1994, and followed across four waves of data collection into adulthood. Wave 4 data were collected in 2007-2008 when most respondents were between 24 and 32 years old. Respondents could report more than one race/ethnicity. Poisson regression was used to analyze the data. RESULTS: We found distinct smoking trajectories among monorace and biracial/ethnic Blacks, with all groups eventually equaling or surpassing trajectories of Whites. The age of cross-over varied by gender for some subgroups, with Black-American Indian males catching up earlier than Black-American Indian females. Black-White females smoked on more days than monorace Black females until age 26 and also smoked more than Black-White males between ages 11 and 29 years. Black-Hispanic males smoked on more days than Black-Hispanic females from ages 11 to 14. The results of the interaction tests also indicated different smoking trajectories across SES levels among White, Black, and Black-White respondents. CONCLUSION: Significant heterogeneity was observed regarding smoking trajectories between monoracel and biracial/ethnic Blacks. Knowledge of cigarette smoking patterns among monorace and biracial/ethnic Black youth and young adults extends our understanding of the etiology of tobacco use and may inform interventions.

Developmental trajectories of alcohol use among monoracial and biracial Black adolescents and adults.

OBJECTIVE: The present study investigates developmental trajectories of alcohol use from early adolescence to adulthood by age and race/ethnicity among White, Black, Black-American Indian, Black-Hispanic, and Black-White individuals and associated sociodemograhphic correlates. METHOD: We used a subsample of nationally representative data obtained from the National Longitudinal Study of Adolescent Health (Add Health). The analytic sample consisted of 15,278 individuals in Wave 1 (ages 11 to 21 years). The sample consists of adolescents who were in Grades 7-12 at wave one and who were followed across four waves of data collection into adulthood. Respondents could report more than one race/ethnicity. RESULTS: We find distinct alcohol trajectories among monoracial and biracial/ethnic Blacks with all groups showing a cross-over or catch-up effect. Black-White adults demonstrated a cross-over effect by surpassing the alcohol drinking rates of Whites in adulthood, Black-American Indians showed a within-group catch-up effect by surpassing the alcohol drinking rates of monoracial and biracial/ethnic Blacks in adulthood, and monoracial Blacks were most likely to be non-drinkers in adulthood. We also show gender, socioeconomic status, and household structure differences in impact on alcohol use among monoracial and biracial/ethnic Blacks. CONCLUSIONS: Significant heterogeneity is observed regarding alcohol trajectories between monoracial and biracial/ethnic Blacks.