Emeritus Professor
Email john.horwood@otago.ac.nz
John retired from the University in 2021 after 44 years' service as the lead biostatistician for the Christchurch Health and Development Study (CHDS). From 2015 to 2019, he served as the third Director in the history of the CHDS. He was a much respected academic and colleague and will be greatly missed.
His research focussed on aspects of psychosocial development in adolescence and young adulthood including:
- the development, course and consequences of cannabis and other illicit drug use
- life course trajectories in antisocial behaviour
- the consequences of early onset psychiatric disorder for later adult functioning
- the psychosocial consequences of the Canterbury earthquakes
- and the long term functional outcomes of preterm birth and very low birthweight
Publications
Noble, A. J., Pearson, J. F., Kennedy, M. A., Boden, J. M., Horwood, L. J., & Osborne, A. J. (2021). Does DNA methylation link the association between maternal tobacco use during pregnancy and altered offspring neurodevelopment. Proceedings of the 16th Congress of the Federation of Asian & Oceanic Biochemists & Molecular Biologists (FAOBMB). (pp. 292). Retrieved from https://www.faobmb2021.org
Conference Contribution - Published proceedings: Abstract
Watson, H. J., Thornton, L. M., Yilmaz, Z., Baker, J. H., Coleman, J. R. I., Adan, R. A. H., … Boden, J. M., … Horwood, L. J., … Jordan, J., Kennedy, M., … Bulik, C. M. (2022). Common genetic variation and age at onset of anorexia nervosa. Biological Psychiatry: Global Open Science, 2, 368-378. doi: 10.1016/j.bpsgos.2021.09.001
Journal - Research Article
McLeod, G. F. H., Cleland, L., Welch, J., Spittlehouse, J. K., Fenton, A., Boden, J. M., & Horwood, L. J. (2022). Menopause status and climacteric symptoms in a birth cohort of mid-life New Zealand women. Climacteric, 25(3), 271-277. doi: 10.1080/13697137.2021.1948005
Journal - Research Article
Greer, C., Harris, S. L., Troughton, R., Adamson, P. D., Horwood, J., Frampton, C., & Darlow, B. A. (2021). Right ventricular structure and function in young adults born preterm at very low birth weight. Journal of Clinical Medicine, 10(21), 4864. doi: 10.3390/jcm10214864
Journal - Research Article
Ip, H. F., van der Laan, C. M., Krapohl, E. M. L., Brikell, I., Sánchez-Mora, C., Nolte, I. M., … Miller, A., … Boden, J., Pearson, J., Horwood, L. J., Kennedy, M., Poulton, R., … Boomsma, D. I. (2021). Genetic association study of childhood aggression across raters, instruments, and age. Translational Psychiatry, 11, 413. doi: 10.1038/s41398-021-01480-x
Journal - Research Article
McLeod, G. F. H., Cleland, L., Welch, J., Spittlehouse, J. K., Fenton, A., Boden, J. M., & Horwood, L. J. (2022). Menopause status and climacteric symptoms in a birth cohort of mid-life New Zealand women. Climacteric, 25(3), 271-277. doi: 10.1080/13697137.2021.1948005
Journal - Research Article
McLeod, G. F. H., Horwood, L. J., Darlow, B. A., Boden, J. M., Martin, J., Spittlehouse, J. K., Carter, F. A., Jordan, J., Porter, R., Bell, C., Douglas, K., … McIntosh, V. V. W., … Vierck, E. (2022). Recruitment and retention of participants in longitudinal studies after a natural disaster. Longitudinal & Life Course Studies, 13(2), 287-306. doi: 10.1332/175795921X16168462584238
Journal - Research Article
Watson, H. J., Thornton, L. M., Yilmaz, Z., Baker, J. H., Coleman, J. R. I., Adan, R. A. H., … Boden, J. M., … Horwood, L. J., … Jordan, J., Kennedy, M., … Bulik, C. M. (2022). Common genetic variation and age at onset of anorexia nervosa. Biological Psychiatry: Global Open Science, 2, 368-378. doi: 10.1016/j.bpsgos.2021.09.001
Journal - Research Article
Darlow, B. A., Horwood, J., Dhakal, B., Harris, S. L., McKelvey, V. A., Elliott, J. M., Yang, J., & Mackay, R. J. (2021). Biomarkers of ageing in New Zealand VLBW young adults and controls. Pediatric Research, 89, 533-539. doi: 10.1038/s41390-020-0882-x
Journal - Research Article
Eves, R., Mendonça, M., Baumann, N., Ni, Y., Darlow, B. A., Horwood, J., Woodward, L. J., … Wolke, D. (2021). Association of very preterm birth or very low birth weight with intelligence in adulthood: An individual participant data meta-analysis. JAMA Pediatrics, 175(8), e211058. doi: 10.1001/jamapediatrics.2021.1058
Journal - Research Article
Greer, C., Harris, S. L., Troughton, R., Adamson, P. D., Horwood, J., Frampton, C., & Darlow, B. A. (2021). Right ventricular structure and function in young adults born preterm at very low birth weight. Journal of Clinical Medicine, 10(21), 4864. doi: 10.3390/jcm10214864
Journal - Research Article
Ip, H. F., van der Laan, C. M., Krapohl, E. M. L., Brikell, I., Sánchez-Mora, C., Nolte, I. M., … Miller, A., … Boden, J., Pearson, J., Horwood, L. J., Kennedy, M., Poulton, R., … Boomsma, D. I. (2021). Genetic association study of childhood aggression across raters, instruments, and age. Translational Psychiatry, 11, 413. doi: 10.1038/s41398-021-01480-x
Journal - Research Article
McKelvey, V., Darlow, B. A., Horwood, L. J., & Martin, J. (2021). Dental status of young adults born with very low birthweight: A national cohort study. Community Dentistry & Oral Epidemiology, 49, 240-248. doi: 10.1111/cdoe.12595
Journal - Research Article
McLeod, G. F. H., Horwood, J., Boden, J. M., & Woodward, L. J. (2021). Parental use of physical punishment in a birth cohort. New Zealand Medical Journal, 134(1534), 17-30. Retrieved from https://www.nzma.org.nz/journal
Journal - Research Article
Munn-Chernoff, M. A., Johnson, E. C., Chou, Y.-L., Coleman, J. R. I., Thornton, L. M., Walters, R. K., … Boden, J. M., … Horwood, L. J., … Pearson, J. F., … Jordan, J., Kennedy, M. A., … Agrawal, A. (2021). Shared genetic risk between eating disorder- and substance-use-related phenotypes: Evidence from genome-wide association studies. Addiction Biology, 26, e12880. doi: 10.1111/adb.12880
Journal - Research Article
Boden, J. M., Cleland, L., Dhakal, B., & Horwood, L. J. (2020). Attitudes towards cannabis and cannabis law change in a New Zealand birth cohort. New Zealand Medical Journal, 133(1515), 79-88. Retrieved from https://www.nzma.org.nz/journal
Journal - Research Article
Boden, J. M., Dhakal, B., Foulds, J. A., & Horwood, L. J. (2020). Life-course trajectories of cannabis use: A latent class analysis of a New Zealand birth cohort. Addiction, 115(2), 279-290. doi: 10.1111/add.14814
Journal - Research Article
Clare, P. J., Dobbins, T., Bruno, R., Peacock, A., Boland, V., Yuen, W. S., … Horwood, J., … McCambridge, J. (2020). The overall effect of parental supply of alcohol across adolescence on alcohol-related harms in early adulthood: A prospective cohort study. Addiction, 115, 1833-1843. doi: 10.1111/add.15005
Journal - Research Article
Darlow, B. A., Woodward, L. J., Levin, K. J., Melzer, T., & Horwood, L. J. (2020). Perinatal and childhood predictors of general cognitive outcome at 28 years in a very-low-birthweight national cohort. Developmental Medicine & Child Neurology, 62, 1423-1428. doi: 10.1111/dmcn.14649
Journal - Research Article
Johnson, E. C., Demontis, D., Thorgeirsson, T. E., Walters, R. K., Polimanti, R., Hatoum, A. S., … Boden, J., … Pearson, J. F., … Horwood, J., … Kennedy, M. A., … Agrawal, A. (2020). A large-scale genome-wide association study meta-analysis of cannabis use disorder. Lancet Psychiatry, 7, 1032-1045. doi: 10.1016/S2215-0366(20)30339-4
Journal - Research Article
Lee, J. O., Horwood, L. J., Lee, W. J., Hackman, D. A., McLeod, G. F. H., & Boden, J. M. (2020). Social causation, social selection, or common determinants? Examining competing explanations for the link between young adult unemployment and nicotine dependence. Nicotine & Tobacco Research, 22(11), 2006-2013. doi: 10.1093/ntr/ntz131
Journal - Research Article
Mulder, R. T., Horwood, L. J., & Tyrer, P. (2020). The borderline pattern descriptor in the International Classification of Diseases, 11th Revision: A redundant addition to classification. Australian & New Zealand Journal of Psychiatry, 54(11), 1095-1100. doi: 10.1177/0004867420951608
Journal - Research Article
Osborne, A. J., Pearson, J. F., Noble, A. J., Gemmell, N. J., Horwood, L. J., Boden, J. M., … Kennedy, M. A. (2020). Genome-wide DNA methylation analysis of heavy cannabis exposure in a New Zealand longitudinal cohort. Translational Psychiatry, 10, 114. doi: 10.1038/s41398-020-0800-3
Journal - Research Article
Spittlehouse, J. K., Boden, J. M., & Horwood, L. J. (2020). Sexual orientation and mental health over the life course in a birth cohort. Psychological Medicine, 50, 1348-1355. doi: 10.1017/S0033291719001284
Journal - Research Article
Yang, J., Kingsford, R. A., Horwood, J., Epton, M. J., Swanney, M. P., Stanton, J., & Darlow, B. A. (2020). Lung function of adults born at very low birth weight. Pediatrics, 145(2), e20192359. doi: 10.1542/peds.2019-2359
Journal - Research Article
Yuen, W. S., Chan, G., Bruno, R., Clare, P., Mattick, R., Aiken, A., … Horwood, J., … Peacock, A. (2020). Adolescent alcohol use trajectories: Risk factors and adult outcomes. Pediatrics, 146(4), e20200440. doi: 10.1542/peds.2020-0440
Journal - Research Article
Bell, C. J., Foulds, J. A., Horwood, L. J., Mulder, R. T., & Boden, J. M. (2019). Childhood abuse and psychotic experiences in adulthood: Findings from a 35-year longitudinal study. British Journal of Psychiatry, 214, 153-158. doi: 10.1192/bjp.2018.264
Journal - Research Article
Duncan, R., Mulder, R., Wilkinson, S. H., & Horwood, J. (2019). Medically unexplained symptoms and antecedent sexual abuse: An observational study of a birth cohort. Psychosomatic Medicine, 81, 622-628. doi: 10.1097/psy.0000000000000726
Journal - Research Article
Najman, J. M., Plotnikova, M., Horwood, J., Silins, E., Fergusson, D., Patton, G. C., … Mattick, R. P. (2019). Does adolescent heavier alcohol use predict young adult aggression and delinquency? Parallel analyses from four Australasian cohort studies. Aggressive Behavior, 45, 427-436. doi: 10.1002/ab.21828
Journal - Research Article
Richards, A., Horwood, J., Boden, J., Kennedy, M., Sellers, R., Riglin, L., … Harold, G. T. (2019). Associations between schizophrenia genetic risk, anxiety disorders and manic/hypomanic episode in a longitudinal population cohort study. British Journal of Psychiatry, 214, 96-102. doi: 10.1192/bjp.2018.227
Journal - Research Article