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J. Welham · SciRah

Researcher profile · Semantic Scholar

J. Welham

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J. Welham — researcher profile on SciRah

h-index: 25
Works: 78
Citations: 7,350

Most-cited papers

Schizophrenia: a concise overview of incidence, prevalence, and mortality.
J. McGrath, S. Saha, D. Chant, J. Welham
2008Epidemiologic Reviews2,257 citations Open access
Semantic Scholar
A Systematic Review of the Prevalence of Schizophrenia
S. Saha, D. Chant, J. Welham, J. McGrath
2005PLoS Medicine2,149 citations Open access
Semantic Scholar
A systematic review and meta-analysis of Northern Hemisphere season of birth studies in schizophrenia.
G. Davies, J. Welham, D. Chant, E. Torrey +1 more
2003Schizophrenia bulletin433 citations
Semantic Scholar
Emotional and behavioural antecedents of young adults who screen positive for non-affective psychosis: a 21-year birth cohort study
J. Welham, J. Scott, G. Williams, J. Najman +3 more
2008Psychological Medicine283 citations
Semantic Scholar
Psychotic-like experiences in major depression and anxiety disorders: a population-based survey in young adults.
D. Varghese, J. Scott, J. Welham, W. Bor +4 more
2011Schizophrenia bulletin282 citations Open access
Semantic Scholar
Association between cannabis use and psychosis-related outcomes using sibling pair analysis in a cohort of young adults.
J. McGrath, J. Welham, J. Scott, D. Varghese +6 more
2010Archives of General Psychiatry259 citations
Semantic Scholar
The antecedents of schizophrenia: a review of birth cohort studies.
J. Welham, M. Isohanni, P. Jones, J. McGrath
2009Schizophrenia bulletin210 citations Open access
Semantic Scholar
Performance on tests sensitive to impaired executive ability in schizophrenia, mania and well controls: acute and subacute phases.
J. McGrath, S. Scheldt, J. Welham, A. Clair
1997Schizophrenia Research178 citations
Semantic Scholar
Season of birth and schizophrenia: a systematic review and meta-analysis of data from the Southern Hemisphere.
J. McGrath, J. Welham
1999Schizophrenia Research138 citations
Semantic Scholar
Paternal and maternal age as risk factors for psychosis: findings from Denmark, Sweden and Australia.
O. El-Saadi, C. Pedersen, T. Mcneil, S. Saha +6 more
2004Schizophrenia Research110 citations
Semantic Scholar
Psychopathology during childhood and adolescence predicts delusional-like experiences in adults: a 21-year birth cohort study.
J. Scott, G. Martin, J. Welham, W. Bor +5 more
2009American Journal of Psychiatry106 citations
Semantic Scholar
The incidence and prevalence of schizophrenia varies with latitude
S. Saha, D. Chant, J. Welham, John J. McGrath
2006Acta Psychiatrica Scandinavica106 citations
Semantic Scholar
Demographic correlates of psychotic‐like experiences in young Australian adults
J. Scott, J. Welham, G. Martin, W. Bor +5 more
2008Acta Psychiatrica Scandinavica104 citations
Semantic Scholar
Schizophrenia and the influenza epidemics of 1954, 1957 and 1959: a southern hemisphere study.
John J. McGrath, M. Pemberton, J. Welham, R. M. Murray
1994Schizophrenia Research102 citations
Semantic Scholar
Clinical correlates of olfactory hallucinations in schizophrenia
S. Saha, D. Chant, J. Welham, J. McGrath
200673 citations Open access
Semantic Scholar
The Distribution of Adipose Tissue in Female In-patients Receiving Psychotropic Drugs
T. Stedman, J. Welham
1993British Journal of Psychiatry58 citations
Semantic Scholar
Month of Birth, Hemisphere of Birth and Schizophrenia
J. Mcgrath, J. Welham, M. Pemberton
1995British Journal of Psychiatry48 citations
Semantic Scholar
Poster presentation: IV. Epidemiology B. SeasonalitySeasonality of first admissions for schizophrenia in the southern hemisphere
G. Davies, F. Ahmad, D. Chant, J. Welham +1 more
200045 citations
Semantic Scholar
Incidence of schizophrenia does not vary with economic status of the country
S. Saha, J. Welham, D. Chant, J. McGrath
2006Social Psychiatry and Psychiatric Epidemiology44 citations
Semantic Scholar
Directional and fluctuating asymmetry in finger and a-b ridge counts in psychosis: a case-control study
S. Saha, D. Loesch, D. Chant, J. Welham +4 more
2003BMC Psychiatry43 citations Open access
Semantic Scholar
The antecedents of non‐affective psychosis in a birth‐cohort, with a focus on measures related to cognitive ability, attentional dysfunction and speech problems
J. Welham, J. Scott, G. Williams, J. Najman +3 more
2010Acta Psychiatrica Scandinavica35 citations
Semantic Scholar
Clinical and demographic features of treated first-episode psychotic disorders: a Zambian study.
E. Mbewe, A. Haworth, J. Welham, Didduh Mubanga +4 more
2006Schizophrenia Research34 citations
Semantic Scholar
Effects of nifedipine on psychosis and tardive dyskinesia in schizophrenic patients.
Terry J. Stedman, Harvey A. Whiteford, D. Eyles, J. Welham +1 more
1991Journal of Clinical Psychopharmacology29 citations
Semantic Scholar
A gap approach to exploring quality of life in mental health
J. Welham, M. Haire, D. Mercer, T. Stedman
2004Quality of Life Research26 citations
Semantic Scholar
Choosing negative symptom instruments: issues of representation and redundancy.
J. Welham, T. Stedman, A. Clair
1999Psychiatry Research26 citations
Semantic Scholar
Age-at-first-registration for affective psychosis and schizophrenia.
J. Welham, R. Thomis, J. McGrath
2004Schizophrenia bulletin19 citations Open access
Semantic Scholar
Season of birth effect and latitude: A systematic review and meta-analysis of northern hemisphere schizophrenia studies
G. Davies, J. Welham, E. Torrey, John J. McGrath
200017 citations
Semantic Scholar
No significant association between prenatal exposure poliovirus epidemics and psychosis.
Matthew Cahill, D. Chant, J. Welham, J. McGrath
2002Australian and New Zealand journal of psychiatry (Print)16 citations
Semantic Scholar
Schizophrenia; birthrates and three Australian epidemics
J. Welham, John J. McGrath, M. Pemberton
199316 citations
Semantic Scholar
Incorporating lag effects in register-based age-of-onset distributions in schizophrenia.
J. Welham, M. Pemberton, J. McGrath
1996Schizophrenia Research14 citations
Semantic Scholar
Growth in Young Adults Who Screen Positive for Non-Affective Psychosis: Birth Cohort Study
J. Welham, J. Scott, G. Williams, J. Najman +2 more
2009Australian and New Zealand journal of psychiatry (Print)12 citations
Semantic Scholar
Climate, Geography, and the Search for Candidate, Nongenetic, Risk Factors for Schizophrenia
J. Welham, G. Davies, A. Auliciems, J. McGrath
200012 citations
Semantic Scholar
Heterogeneity in schizophrenia; mixture modelling of age‐at‐first‐admission, gender and diagnosis
J. Welham, Geoffrey J. McLachlan, G. Davies, J. McGrath
2000Acta Psychiatrica Scandinavica11 citations
Semantic Scholar
Placebo‐Controlled, Double‐Blind Study of the Effects of Proglumide in the Treatment of Schizophrenia
H. Whiteford, T. Stedman, J. Welham, John G. Csernansky +1 more
1992Journal of Clinical Psychopharmacology11 citations
Semantic Scholar
Modelling cognitive symptoms in the DVD-deficient rodent model of schizophrenia
J. McGrath, J. Welham, James G. Scott, D. Varghese +6 more
20119 citations Open access
Semantic Scholar
An open-label study of famotidine as a treatment for schizophrenia.
H. Whiteford, Terry J. Stedman, John J. McGrath, J. Welham +1 more
1995Journal of Psychiatry & Neuroscience9 citations
Semantic Scholar
No association between the deficit syndrome in psychosis and summer birth in a Southern hemisphere country.
J. Welham, D. Chant, S. Saha, J. McGrath +2 more
2006Australian and New Zealand journal of psychiatry (Print)6 citations
Semantic Scholar
Age-at-First-Registration and Heterogeneity in Affective Psychoses
J. Welham, R. Thomis, J. McGrath
2003Australian and New Zealand journal of psychiatry (Print)6 citations
Semantic Scholar
Age-at-first-registration in schizophrenia: a comparison of mental health registers from Australia and Brazil.
S. Andreoli, F. Gastal, S. O. Leite, J. Welham +1 more
2002Schizophrenia Research5 citations
Semantic Scholar
A systematic review of the incidence of schizophrenia: the distribution of rates and the influence of sex, urbanicity, migrant status and methodology
J. McGrath, S. Saha, J. Welham, O. El-Saadi +2 more
2004BMC Medicine4 citations Open access
Semantic Scholar
The incidence and prevalence of schizophrenia: Preliminary results from a systematic review
O. El-Saadi, J. Welham, S. Saha, C. Macaulay +4 more
20024 citations
Semantic Scholar
Between-year fluctuations in schizophrenia birth rate and associations with the Southern Oscillation Index, cloud cover and sunshine
John J. McGrath, J. Welham, G. Davies, D. Chant +1 more
20003 citations
Semantic Scholar
Authors' Reply: Measurement Errors in Schizophrenia Epidemiology
J. McGrath, S. Saha, J. Welham, D. Chant
2005PLoS Medicine2 citations Open access
Semantic Scholar
Schizophrenia; do seasonal birthrates differ between the hemispheres?
J. Welham, M. Pemberton, John J. McGrath
19932 citations
Semantic Scholar
The incidence of schizophrenia: A systematic review
S. Saha, J. Welham, C. Macaulay, O. El-Saadi +2 more
20031 citations
Semantic Scholar
Paternal age as a risk factor for psychosis and schizophrenia: Findings from Denmark, Sweden and Australia
O. El-Saadi, S. Saha, J. Welham, D. Chant +6 more
20021 citations
Semantic Scholar
Age-at-first-admission of schizophrenia, bipolar disorder and major depression: Implications of heterogeneity
Richard J. Thomis, J. Welham, G. Davies, D. Chant +2 more
20001 citations
Semantic Scholar
Integrating quality of life assessment into consumer-focused research
J. Welham, M. Haire, Terry Stedman, D. Mercer
19981 citations
Semantic Scholar
Heterogeneity in schizophrenia: A mixture model analysis based on age-of-onset, gender and diagnosis
Geoffrey J. McLachlan, J. Welham, John J. McGrath
19981 citations
Semantic Scholar
Time-series as an alternative analysis of seasonality in schizophrenia birth-rates
J. Welham, Geoffrey J. McLachlan, John J. McGrath
19951 citations
Semantic Scholar

Frequent co-authors

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J. McGrath×27
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D. Chant×18
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S. Saha×13
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John J. McGrath×10
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J. Scott — researcher profile on SciRah

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J. Najman — researcher profile on SciRah

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W. Bor — researcher profile on SciRah

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G. Davies — researcher profile on SciRah

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O. El-Saadi — researcher profile on SciRah

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