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Research Output

Academic performance, externalizing disorders and depression: 26,000 adolescents followed into adulthood

Sörberg Wallin, A., Koupil, I., Gustafsson, J-E., Zammit, S., Allebeck, P. & Falkstedt, D., 12 Aug 2019, In : Social Psychiatry and Psychiatric Epidemiology. 54, 8, p. 977-986 10 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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2 Citations (Scopus)
135 Downloads (Pure)

Adverse life outcomes associated with adolescent psychotic experiences and depressive symptoms

Davies, J., Sullivan, S. & Zammit, S., May 2018, In : Social Psychiatry and Psychiatric Epidemiology. 53, 5, p. 497–507 11 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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7 Citations (Scopus)
226 Downloads (Pure)

Age- and puberty-dependent association between IQ score in early childhood and depressive symptoms in adolescence

Glaser, B., Gunnell, D., Timpson, N. J., Joinson, C., Zammit, S., Smith, G. D. & Lewis, G. H., 1 Feb 2011, In : Psychological Medicine. 41, 02, p. 333-343 11 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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15 Citations (Scopus)
185 Downloads (Pure)

Aggressive behaviour in patients with schizophrenia is associated with catechol-O-methyltransferase genotype

Jones, G., Zammit, S., Norton, N., Hamshere, M. L., Jones, S. J., Milham, C., Sanders, R. D., McCarthy, G. M., Jones, L. A., Cardno, A. G., Gray, M., Murphy, K. C. & Owen, M. J., 1 Oct 2001, In : British Journal of Psychiatry. 179, 4, p. 351-355 5 p.

Research output: Contribution to journalArticle (Academic Journal)

92 Citations (Scopus)

A longitudinal investigation of childhood communication ability and adolescent psychotic experiences in a community sample

Sullivan, S. A., Hollen, L. I., Wren, Y. E., Thompson, A., Lewis, G. H. & Zammit, S., 1 May 2016, In : Schizophrenia Research. 173, 1-2, p. 54-61 8 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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10 Citations (Scopus)
270 Downloads (Pure)

A longitudinal study of premorbid IQ score and risk of developing schizophrenia, bipolar disorder, severe depression, and other nonaffective psychoses

Zammit, S., Allebeck, P., David, A., Dalman, C., Hemmingsson, T., Lundberg, I. & Lewis, G., Apr 2004, In : Archives of General Psychiatry. 61 (4), p. 354 - 360 7 p.

Research output: Contribution to journalArticle (Academic Journal)

329 Citations (Scopus)

A Mendelian randomization study of the causal association between anxiety phenotypes and schizophrenia

Jones, H. J., Martin, D., Lewis, S. J., Davey Smith, G., O'Donovan, M. C., Owen, M. J., Walters, J. T. R. & Zammit, S., 28 May 2020, (Accepted/In press) In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics.

Research output: Contribution to journalArticle (Academic Journal)

A meta-analysis of the MTHFR C677T polymorphism and schizophrenia risk

Lewis, S. J., Zammit, S., Gunnell, D. & Smith, G. D., 5 May 2005, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 135B, 1, p. 2-4 3 p.

Research output: Contribution to journalArticle (Academic Journal)

78 Citations (Scopus)

Analysis of 10 independent samples provides evidence for association between schizophrenia and a SNP flanking fibroblast growth factor receptor 2

O'Donovan, M. C., Norton, N., Williams, H., Peirce, T., Moskvina, V., Nikolov, I., Hamshere, M., Carroll, L., Georgieva, L., Dwyer, S., Holmans, P., Marchini, J. L., Spencer, C. C. A., Howie, B., Leung, H. T., Giegling, I., Hartmann, A. M., Möller, H. J., Morris, D. W., Shi, Y. & 44 others, Feng, G., Hoffmann, P., Propping, P., Vasilescu, C., Maier, W., Rietschel, M., Zammit, S., Schumacher, J., Quinn, E. M., Schulze, T. G., Iwata, N., Ikeda, M., Darvasi, A., Shifman, S., He, L., Duan, J., Sanders, A. R., Levinson, D. F., Adolfsson, R., Ösby, U., Terenius, L., Jönsson, E. G., Cichon, S., Nöthen, M. M., Gill, M., Corvin, A. P., Rujescu, D., Gejman, P. V., Kirov, G., Craddock, N., Williams, N. M., Owen, M. J., Gejman, P. V., Sanders, A. R., Duan, J., Levinson, D. F., Buccola, N. G., Mowry, B. J., Freedman, R., Amin, F., Black, D. W., Silverman, J. M., Byerley, W. J. & Cloninger, C. R., 25 Jan 2009, In : Molecular Psychiatry. 14, 1, p. 30-36 7 p.

Research output: Contribution to journalArticle (Academic Journal)

52 Citations (Scopus)

An investigation into the use of cannabis and tobacco as risk factors for schizophrenia

Zammit, S., 2004, (Unpublished) University of Cardiff.

Research output: Other contributionPhD thesis (not Bristol)

ApoE elevation is associated with the persistence of psychotic experiences from age 12 to age 18: Evidence from the ALSPAC birth cohort

Sabherwal, S., Föcking, M., English, J. A., Fitzsimons, S., Hryniewiecka, M., Wynne, K., Scaife, C., Healy, C., Cannon, M., Belton, O., Zammit, S., Cagney, G. & Cotter, D. R., 1 Jul 2019, In : Schizophrenia Research. 209, p. 141-147 7 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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1 Citation (Scopus)
10 Downloads (Pure)

A population-based cohort study examining the incidence and impact of psychotic experiences from childhood to adulthood, and prediction of psychotic disorder.

Sullivan, S. A., Kounali, D-Z., Cannon, M., David, A. S., Fletcher, P., Holmans, P. A., Jones, H., Jones, P. B., Linden, D. E. J., Lewis, G. H., Owen, M. J., O'Donovan, M. C., Rammos, A., Thompson, A., Wolke, D. & Zammit, S., 7 Jan 2020, In : American Journal of Psychiatry. 10 p.

Research output: Contribution to journalArticle (Academic Journal)

A population-based longitudinal study of childhood neurodevelopmental disorders, IQ and subsequent risk of psychotic experiences in adolescence

Khandaker, G. M., Stochl, J., Zammit, S., Lewis, G. H. & Jones, P. B., 12 Nov 2014, In : Psychological Medicine. 44, 15, p. 3229-3238 10 p.

Research output: Contribution to journalArticle (Academic Journal)

19 Citations (Scopus)

A population-based prospective birth cohort study of childhood neurocognitive and psychological functioning in healthy survivors of early life meningitis

Khandaker, G. M., Stochl, J., Zammit, S., Lewis, G. & Jones, P. B., 1 Apr 2015, In : Annals of Epidemiology. 25, 4, p. 236-242 7 p.

Research output: Contribution to journalArticle (Academic Journal)

10 Citations (Scopus)

A population-based study of atopic disorders and inflammatory markers in childhood before psychotic experiences in adolescence

Khandaker, G. M., Zammit, S., Lewis, G. & Jones, P. B., 1 Jan 2014, In : Schizophrenia Research. 152, 1, p. 139-145 7 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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38 Citations (Scopus)
158 Downloads (Pure)

A population-based study of genetic variation and psychotic experiences in adolescents

Zammit, S., Hamshere, M., Dwyer, S., Georgiva, L., Timpson, N., Moskvina, V., Richards, A., Evans, D. M., Lewis, G., Jones, P., Owen, M. J. & O'Donovan, M. C., 1 Nov 2014, In : Schizophrenia Bulletin. 40, 6, p. 1254-1262 9 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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45 Citations (Scopus)
184 Downloads (Pure)

A population-based study of shared genetic variation between premorbid IQ and psychosis among male twin pairs and sibling pairs from Sweden

Fowler, T., Zammit, S., Owen, M. J. & Rasmussen, F., 1 May 2012, In : Archives of General Psychiatry. 69, 5, p. 460-466 7 p.

Research output: Contribution to journalArticle (Academic Journal)

40 Citations (Scopus)
17 Citations (Scopus)

Are parental ADHD problems associated with a more severe clinical presentation and greater family adversity in children with ADHD?

Agha, S. S., Zammit, S., Thapar, A. & Langley, K., Jun 2013, In : European Child and Adolescent Psychiatry. 22, 6, p. 369-377 9 p.

Research output: Contribution to journalArticle (Academic Journal)

40 Citations (Scopus)

Assessing causality in associations between cannabis use and schizophrenia risk: a two-sample Mendelian randomization study

Gage, S., Jones, H., Burgess, S., Bowden, J., Davey Smith, G., Zammit, S. & Munafo, M., Apr 2017, In : Psychological Medicine. 47, 5, p. 971-980 10 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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53 Citations (Scopus)
312 Downloads (Pure)

Association analysis of NOTCH4 loci in schizophrenia using family and population-based controls

Sklar, P., Schwab, S. G., Williams, N. M., Daly, M., Schaffner, S., Maier, W., Albus, M., Trixler, M., Eichhammer, P., Lerer, B., Hallmayer, J., Norton, N., Williams, H., Zammit, S., Cardno, A. G., Jones, S. & McCarthy, G., 1 Jun 2001, In : Nature Genetics. 28, 2, p. 126-128 3 p.

Research output: Contribution to journalArticle (Academic Journal)

55 Citations (Scopus)

Association analysis of the HOPA12bp polymorphism in schizophrenia and manic depressive illness

Kirov, G., Georgieva, L., Nikolov, I., Zammit, S., Jones, G., Poriazova, N., Tolev, T., Owen, R., Jones, S. & Owen, M. J., 1 Apr 2003, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 118B, 1, p. 16-19 4 p.

Research output: Contribution to journalArticle (Academic Journal)

Association between a functional interleukin 6 receptor genetic variant and risk of depression and psychosis in a population-based birth cohort

Khandaker, G. M., Zammit, S., Burgess, S., Lewis, G. & Jones, P. B., Mar 2018, In : Brain, Behavior, and Immunity. 69, p. 264-272 9 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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30 Citations (Scopus)
141 Downloads (Pure)

Association Between Cannabis and Psychosis: Epidemiologic Evidence

Gage, S. H., Hickman, M. & Zammit, S., 1 Apr 2016, In : Biological Psychiatry. 79, 7, p. 549-556 8 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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130 Citations (Scopus)
1178 Downloads (Pure)

Association between childhood infection, serum inflammatory markers and intelligence: findings from a population-based prospective birth cohort study

MACKINNON, N., ZAMMIT, S., LEWIS, G., JONES, P. B. & KHANDAKER, G. M., 4 Dec 2017, In : Epidemiology and Infection. p. 1-9 9 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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6 Citations (Scopus)
203 Downloads (Pure)

Association between childhood psychiatric disorders and psychotic experiences in adolescence: A population-based longitudinal study

Siebald, C., Khandaker, G., Zammit, S., Lewis, G. H. & Jones, P. B., Aug 2016, In : Comprehensive Psychiatry. 69, p. 45-52 8 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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8 Citations (Scopus)
237 Downloads (Pure)

Association between locus of control in childhood and psychotic symptoms in early adolescence: Results from a large birth cohort

Thompson, A., Sullivan, S., Lewis, G., Zammit, S., Heron, J., Horwood, J., Thomas, K., Gunnell, D., Hollis, C., Wolke, D. & Harrison, G., Sep 2011, In : Cognitive Neuropsychiatry. 16, 5, p. 385-402 18 p.

Research output: Contribution to journalArticle (Academic Journal)

25 Citations (Scopus)

Association between Maternal Depression Symptoms across the First Eleven Years of Their Child's Life and Subsequent Offspring Suicidal Ideation

Hammerton, G., Mahedy, L., Mars, B., Harold, G. T., Thapar, A., Zammit, S. & Collishaw, S., 7 Jul 2015, In : PLoS ONE. 10, 7, 18 p., e0131885.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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19 Citations (Scopus)
287 Downloads (Pure)

Association between PRODH and schizophrenia is not confirmed

Williams, H. J., Williams, N. M., Spurlock, G., Norton, N., Ivanov, D., McCreadie, R. G., Preece, A., Sharkey, V., Jones, S., Zammit, S., Nikolov, I., Kehaiov, I., Thapar, A., Murphy, K. C., Kirov, G., Owen, M. J. & O'Donovan, M. C., 1 Jul 2003, In : Molecular Psychiatry. 8, 7, p. 644-645 2 p.

Research output: Contribution to journalArticle (Academic Journal)

45 Citations (Scopus)

Association between serum C-reactive protein and DSM-IV generalized anxiety disorder in adolescence: Findings from the ALSPAC cohort

Khandaker, G., Zammit, S., Lewis, G. H. & Jones, P. B. T., Oct 2016, In : Neurobiology of Stress. 4, p. 55-61 7 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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19 Citations (Scopus)
217 Downloads (Pure)

Association of Combined Patterns of Tobacco and Cannabis Use in Adolescence With Psychotic Experiences

Jones, H., Gage, S., Heron, J., Hickman, M., Lewis, G., Munafo, M. & Zammit, S., 17 Jan 2018, In : JAMA Psychiatry. 7 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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10 Citations (Scopus)
229 Downloads (Pure)

Association of copy number variation across the genome with neuropsychiatric traits in the general population

Guyatt, A. L., Stergiakouli, E., Martin, J., Walters, J., O'Donovan, M., Owen, M., Thapar, A., Kirov, G., Rodriguez, S., Rai, D., Zammit, S. & Gaunt, T. R., Jul 2018, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 177, 5, p. 489-502 14 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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7 Citations (Scopus)
207 Downloads (Pure)

Association of Genetic Liability to Psychotic Experiences With Neuropsychotic Disorders and Traits

Legge, S. E., Jones, H., Kendall, K., Pardiñas, A., Menzies, G., Bracher-Smith, M., Escott-Price, V., Rees, E., Davis, K. AS., Hotopf, M., Savage, J. E., Posthuma, D., Holmans, P., Kirov, G., Owen, M. J., O’Donovan, M. C., Zammit, S. & Walters, J. T., 25 Sep 2019, In : JAMA Psychiatry. 10 p.

Research output: Contribution to journalArticle (Academic Journal)

9 Citations (Scopus)

Association of Genetic Risk for Rheumatoid Arthritis with Cognitive and Psychiatric Phenotypes Across Childhood and Adolescence

Jones, H., Hubbard, L., Mitchell, R., Jones, S. A., Williams, N. M., Zammit, S. & Hall, J., 21 Jun 2019, In : JAMA Network Open. 2, 6, 12 p., e196118.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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1 Citation (Scopus)
147 Downloads (Pure)

Association of Genetic Risk for Schizophrenia With Nonparticipation Over Time in a Population-Based Cohort Study

Martin, J., Tilling, K. M., Hubbard, L., Stergiakouli, E., Thapar, A., Davey Smith, G., O'Donovan, M. C. & Zammit, S., 15 Jun 2016, In : American Journal of Epidemiology. 183, 12, p. 1149-1158 10 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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263 Downloads (Pure)

Association of measures of fetal and childhood growth with non-clinical psychotic symptoms in 12-year-olds: the ALSPAC cohort

Thomas, K., Harrison, G., Zammit, S., Lewis, G., Horwood, J., Heron, J., Hollis, C., Wolke, D., Thompson, A. & Gunnell, D., Jun 2009, In : British Journal of Psychiatry. 194, 6, p. 521-526 6 p.

Research output: Contribution to journalArticle (Academic Journal)

22 Citations (Scopus)

Association of Rare Copy Number Variants With Risk of Depression

Kendall, K. M., Rees, E., Bracher-Smith, M., Legge, S., Riglin, L., Zammit, S., O'Donovan, M. C., Owen, M. J., Jones, I., Kirov, G. & Walters, J. T. R., 18 Apr 2019, In : JAMA Psychiatry. 76, 8, p. 818-825 8 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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4 Citations (Scopus)
255 Downloads (Pure)

Association of Residential Mobility Over the Life Course With Nonaffective Psychosis in 1.4 Million Young People in Sweden

Price, C., Dalman, C., Zammit, S. & Kirkbride, J., Nov 2018, In : JAMA Psychiatry. 75, 11, p. 1128-1136 9 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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12 Citations (Scopus)
227 Downloads (Pure)

Association of serum interleukin 6 and C-reactive protein in childhood with depression and psychosis in young adult life: a population-based longitudinal study

Khandaker, G. M., Pearson, R. M., Zammit, S., Lewis, G. & Jones, P. B., 1 Oct 2014, In : JAMA Psychiatry. 71, 10, p. 1121-1128 8 p.

Research output: Contribution to journalArticle (Academic Journal)

266 Citations (Scopus)

Association of Trauma Type, Age of Exposure, and Frequency in Childhood and Adolescence with Psychotic Experiences in Early Adulthood

Croft, J., Heron, J. E., Teufel, C., Cannon, M., Wolke, D., Thompson, A., Houtepen, L. C. & Zammit, S., Jan 2019, In : JAMA Psychiatry. 76, 1, p. 79-86 8 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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22 Citations (Scopus)
236 Downloads (Pure)

Associations between schizophrenia genetic risk, anxiety disorders and manic/hypomanic episode in a longitudinal population cohort study

Richards, A., Horwood, J., Boden, J., Kennedy, M., Sellers, R., Riglin, L., Mistry, S., Jones, H., Smith, D. J., Zammit, S., Owen, M. J., O'Donovan, M. C. & Harold, G. T., 1 Feb 2019, In : British Journal of Psychiatry. 214, 2, p. 96-102 7 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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3 Citations (Scopus)
255 Downloads (Pure)

Associations of Cannabis and Cigarette Use with Depression and Anxiety at Age 18: Findings from the Avon Longitudinal Study of Parents and Children

Gage, S. H., Hickman, M. R., Heron, J., Munafò, M. R., Lewis, G., Macleod, J. A. A. & Zammit, S., 13 Apr 2015, In : PLoS ONE. 10, 4, 13 p., e0122896.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
File
37 Citations (Scopus)
231 Downloads (Pure)

Associations of cannabis and cigarette use with psychotic experiences at age 18: findings from the Avon Longitudinal Study of Parents and Children

Gage, S. H., Hickman, M., Heron, J., Munafo, M. R., Lewis, G., Macleod, J. & Zammit, S., 6 Dec 2014, In : Psychological Medicine. 44, 16, p. 3435-3444 10 p.

Research output: Contribution to journalArticle (Academic Journal)

44 Citations (Scopus)

A systematic genomewide linkage study in 353 sib pairs with schizophrenia

Williams, N. M., Norton, N., Williams, H. J., Ekholm, B., Hamshere, M. L., Lindblom, Y., Chowdari, K. V., Cardno, A. G., Zammit, S., Jones, L. A., Murphy, K. C., Sanders, R. D., McCarthy, G. M., Gray, M. Y., Jones, G., Holmans, P. A., Nimgaonkar, V., Adolfson, R., Osby, U., Terenius, L. & 3 others, Sedvall, G., O'Donovan, M. C. & Owen, M. J., 1 Dec 2003, In : American Journal of Human Genetics. 73, 6, p. 1355-1367 13 p.

Research output: Contribution to journalArticle (Academic Journal)

103 Citations (Scopus)

Authors' reply

Zammit, S., Gunawardana, L., Smith, G. D., Whitley, E., Gunnell, D., Lewis, S. & Rasmussen, F., Feb 2012, In : British Journal of Psychiatry. 200, 2, p. 160-161 2 p.

Research output: Contribution to journalArticle (Academic Journal)

Authors' reply

Craddock, N. J., Antebi, D., Attenburrow, M-J., Bailey, T., Carson, A., Cowen, P., Craddock, B., Eagles, J., Ebmeie, K., Farmer, A., Fazel, S., Ferrier, N., Geddes, J., Goodwin, G., Harrison, P., Hawton, K., Hunter, S., Jacoby, R., Jones, I. R., Keedwell, P. A. & 17 others, Kerr, M. P., Mackin, P., McGuffin, P., McIntyre, D., McConville, P., Mountain, D., O'Donovan, M. C., Owen, M. J., Oyebode, F., Phillips, M. L., Price, J., Shah, P., Smith, D. J., Walters, J. T. R., Woodruff, P., Young, A. & Zammit, S., 1 Oct 2008, In : British Journal of Psychiatry.

Research output: Contribution to journalLetter (Academic Journal)

1 Citation (Scopus)

Autistic traits and trajectories of depression from childhood to age 18: genetically informed population-based study

Rai, D., Culpin, I., Heuvelman, H., Magnusson, C. M. K., Carpenter, P., Jones, H., Emond, A. M., Zammit, S., Golding, J. & Pearson, R. M., Aug 2018, In : JAMA Psychiatry. 75, 8, p. 835-843 9 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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18 Citations (Scopus)
218 Downloads (Pure)

Birth order and the severity of illness in schizophrenia

Gaughran, F., Blizard, R., Mohan, R., Zammit, S. & Owen, M. J., 1 Mar 2007, In : Psychiatry Research. 150, 2, p. 205-210 6 p.

Research output: Contribution to journalArticle (Academic Journal)

8 Citations (Scopus)

Blood-Based Protein Changes in Childhood Are Associated With Increased Risk for Later Psychotic Disorder: Evidence From a Nested Case-Control Study of the ALSPAC Longitudinal Birth Cohort

English, J. A., Lopez, L. M., O'Gorman, A., Föcking, M., Hryniewiecka, M., Scaife, C., Sabherwal, S., Wynne, K., Dicker, P., Rutten, B. P. F., Lewis, G., Zammit, S., Cannon, M., Cagney, G. & Cotter, D. R., 27 Jul 2017, In : Schizophrenia Bulletin. 44, 2, p. 297-306 10 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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18 Citations (Scopus)
135 Downloads (Pure)

Borderline personality and attention-deficit hyperactivity traits in childhood are associated with hypomanic features in early adulthood

Mistry, S., Zammit, S., Price, V-E., Jones, H. J. & Smith, D. J., 15 Oct 2017, In : Journal of Affective Disorders. 221, p. 246-253 8 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
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4 Citations (Scopus)
179 Downloads (Pure)