Fatusi, A.O. and Hindin, M.J. (2010) Adolescents and youth in developing countries: Health and development issues in context. Journal of Adolescence, 33, 499-508. doi:10.1016/j.adolescence.2010.05.019
 McCarthy, W.J., Mistry, R., Lu, Y., Patel, M., Zheng, H. and Dietsch, B. (2009) Density of tobacco retailers near schools: effects on tobacco use among students. American Journal of Public Health, 99, 2006-2013. doi:10.2105/AJPH.2008.145128
 DuRant, R.H., Smith, J.A., Kreiter, S.R. and Krowchuk, D.P. (1999) The relationship between early age of onset of initial substance use and engaging in multiple health risk behaviors among young adolescents. Archives of Pediatrics & Adolescent Medicine, 153, 286–291. doi:10.1001/archpedi.153.3.286
 Garretsen, H.F., Bongers, I.M., van Oers, J.A. and van de Goor, L.A. (1999) The development of alcohol consumption and problem drinking in Rotterdam 1980-1994: More problem drinking amongst the young and the middle aged. Alcohol, 34, 733-40. doi:10.1093/alcalc/34.5.733
 Kim, J.H., Lee, S., Chow, J., Lau, J., Tsang, A., Choi, J. and Griffiths, S.M. (2008) Prevalence and the factors associated with binge drinking, alcohol abuse, and alcohol dependence: A population-based study of Chinese adults in Hong Kong. Alcohol, 43, 360-370. doi:10.1093/alcalc/agm181
 Bellis, M.A., Hughes, K., Calafat, A., Juan, M., Ramon, A., Rodriguez, J.A., Mendes, F., Schnitzer, S. and Phillips-Howard, P. (2008) Sexual uses of alcohol and drugs and the associated health risks: A cross sectional study of young people in nine European cities. BMC Public Health, 8, 155. doi:10.1186/1471-2458-8-155
 Best, D., Rawaf, S., Rowley, J., Floyd, K., Manning, V. and Strang, J. (2000) Drinking and smoking as concurrent predictors of illicit drug use and positive drug attitudes in adolescents. Drug and Alcohol Dependence, 60, 319-321. doi:10.1016/S0376-8716(00)00113-7
 Stueve, A. and O’Donnell, L.N. (2005) Early alcohol initiation and subsequent sexual and alcohol risk behaviors among urban youths. American Journal of Public Health, 95, 887-893. doi:10.2105/AJPH.2003.026567
 Carter, M., McGee, R., Taylor, B. and Williams, S. (2007) Health outcomes in adolescence: associations with family, friends and school engagement. Journal of Adolescent Health, 30, 51-62. doi:10.1016/j.adolescence.2005.04.002
 Bishop, D.I., Weisgram, E.S., Holleque, K.M., Lund, K.E. and Wheeler-Anderson, J.R. (2005) Identity development and alcohol consumption: Current and retrospective selfreports by college students. Journal of Adolescent Health, 28, 523-533. doi:10.1016/j.adolescence.2004.10.007
 Sychareun, V., Thomsen, S., Faxelid, E. (2011) Concurrent multiple health risk behaviors among adolescents in Luangnamtha province, Lao PDR. BMC Public Health, 11, 1-10. doi:10.1186/1471-2458-11-36
 Poelen, E.A.P., Scholte, R.H.J., Engels, R.C.M.E., Boomsmab, D.I. and Willemsen, G. (2005) Prevalence and trends of alcohol use and misuse among adolescents and young adults in the Netherlands from 1993 to 2000. Drug & Alcohol Dependence, 79, 413-421. doi:10.1016/j.drugalcdep.2005.03.020
 Bennett, L.A., Campillo, C., Chandrashekar, C.R. and Gureje, O. (1998) Alcoholic beverage consumption in India, Mexico, and Nigeria: A cross-cultural comparison. Alcohol Health and Research World, 22, 243-252.
 Benjet, C., Borges, G., Medina-Mora, M.E., Blanco, J., Zambrano, J., Orozco, R., et al. (2007) Drug use opportunities and the transition to drug use among adolescents from the Mexico City Metropolitan Area. Drug & Alcohol Dependence, 90, 128-134. doi:10.1016/j.drugalcdep.2007.02.018
 Andersen, A., Holstein, B.E. and Due, P. (2007) Schoolrelated risk factors for drunkenness among adolescents: Risk factors differ between socio-economic groups. European Journal of Public Health, 17, 27-32. doi:10.1093/eurpub/ckl071
 Hung, C.C., Yen, L.L. and Wu, W.C. (2009) Association of parents’ alcohol use and family interaction with the initiation of alcohol use by sixth graders: A preliminary study in Taiwan. BMC Public Health, 9, 172. doi:10.1186/1471-2458-9-172
 Fothergill, K.E. and Ensminger, M.E. (2006) Childhood and adolescent antecedents of drug and alcohol problems: A longitudinal study. Drug & Alcohol Dependence, 82, 61-76. doi:10.1016/j.drugalcdep.2005.08.009
 Brooks, F.M., Magnusson, J., Spencer, N. and Morgan, A. (2012) Adolescent multiple risk behaviour: An asset approach to the role of family, school and community. Journal of Public Health (Oxford), 34, i48-i56. doi:10.1093/pubmed/fds001
 Becerra, D. and Castillo, J. (2011) Culturally protective parenting practices against substance use among adolescents in Mexico. Journal of Substance Use, 16, 136-149. doi:10.3109/14659891.2010.518199
 Central Statistical Agency of Ethiopia (2008) Summary and statistical report of the 2007 population and housing census: Population size by age and sex. Federal Democratic Republic of Ethiopia Population Census Commission.
 Addis Ababa Education Bureau (2010) Education statistics annual abstract 2008/09. Addis Ababa: Educational management information system (EMIS)—Study, plan and budget support process city government.
 Berhane, Y. and Worku, A. (2007) Alcohol and Khat consumption and the association with HIV/AIDS prevention, care and treatment in Ethiopia: Final report. Addis Continental Institute of Public Health.
 Reda, A., Moges, A., Wondmagegn, B. and Biadgilign, S. (2012) Alcohol drinking patterns among high school students in Ethiopia: A cross-sectional study. BMC Public Health, 12, 1-6. doi:10.1186/1471-2458-12-213
 Rudatsikira, E., Maposa, D., Mukandavire, Z., Muula, A.S. and Siziya, S. (2009) Prevalence and predictors of illicit drug use among school-going adolescents in Harare, Zimbabwe. Annals of African Medicine, 8, 215-220. doi:10.4103/1596-3519.59574
 Chaveepojnkamjorn, W. and Pichainarong, N. (2011) Current drinking and health-risk behaviors among male high school students in central Thailand. BMC Public Health, 11, 233. doi:10.1186/1471-2458-11-233
 Sturua, L., Baramidze, L., Gamkrelidze, A. and Galdava, G. (2010) Alcohol use in Georgian students; pilot study rigorously following criteria of European school project on alcohol and other drug. Georgian Medical News, 179, 52-61.
 Alikasifoglu, M., Erginoz, E., Ercan, O., Uysal, O., Albayrak-Kaymak, D. and Ilter, O. (2004) Alcohol drinking behaviors among Turkish high school students. The Turkish Journal of Pediatrics, 46, 44-53.
 Chikere, E.I. and Mayowa, M.O. (2011) Prevalence and perceived health effect of alcohol use among male undergraduate students in Owerri, South-East Nigeria: A descriptive cross-sectional study. BMC Public Health, 11, 118. doi:10.1186/1471-2458-11-118
 Siziya, S., Muula, A.S., Kazembe, L.N. and Rudatsikira, E. (2008) Harmful lifestyles’ clustering among sexually active in-school adolescents in Zambia. BMC Pediatrics, 8, 6. doi:10.1186/1471-2431-8-6
 Madu, S.N. and Matla, M.Q. (2003) Illicit drug use, cigarette smoking and alcohol drinking behaviour among a sample of high school adolescents in the Pietersburg area of the Northern Province, South Africa. Journal of Adolescence, 26, 121-136. doi:10.1016/S0140-1971(02)00120-3
 Ihunwo, A.O., Kayanja, F.I. and Amadi-Ihunwo, U.B. (2004) Use and perception of the psychostimulant, khat (Catha edulis) among three occupational groups in south western Uganda. East African Medical Journal, 81, 468-473. doi:10.4314/eamj.v81i9.9223
 Denny, S.J., Robinson, E.M., Utter, J., Fleming, T.M., Grant, S., Milfont, T.L., et al. (2011) Do schools influence student risk-taking behaviors and emotional health symptoms? Journal of Adolescent Health, 48, 259-267. doi:10.1016/j.jadohealth.2010.06.020
 Gnadt, B. (2006) Religiousness, current substance use, and early risk Indicators for substance abuse in nursing students. Journal of Addictions Nursing, 17, 151-158. doi:10.1080/10884600600862103