Research Topics
| M P LittleSummaryAffiliation: Imperial College Country: UK Publications
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Detail Information
Publications
Projection of cancer risks from the Japanese atomic bomb survivors to the England and Wales population taking into account uncertainty in risk parametersM P Little
Department of Epidemiology and Public Health, Imperial College School of Medicine, London, UK
Radiat Environ Biophys 39:241-52. 2000..Overall, cancer risks predicted by Bayesian Markov Chain Monte Carlo methods are similar to those derived by classical likelihood-based methods and which form the basis of established estimates of radiation-induced cancer risk...
Systematic review of worldwide variations of the prevalence of wheezing symptoms in childrenSwatee P Patel
School of Health and Social Care, University of Greenwich, Southwood Site, Avery Hill Road, London SE9 2UG, UK
Environ Health 7:57. 2008..Considerable variation in the prevalence of childhood asthma and its symptoms (wheezing) has been observed in previous studies and there is evidence that the prevalence has been increasing over time...
Cancer models, genomic instability and somatic cellular Darwinian evolutionMark P Little
Department of Epidemiology and Biostatistics, School of Public Health, Imperial College Faculty of Medicine, London, UK
Biol Direct 5:19; discussion 19. 2010..Biosci. 2003:183;111-134; Little et al. J. Theoret. Biol. 2008:254;229-238)...
A systematic review of epidemiological associations between low and moderate doses of ionizing radiation and late cardiovascular effects, and their possible mechanismsM P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, London W2 1PG, United Kingdom
Radiat Res 169:99-109. 2008..Further epidemiological and biological evidence will allow a firmer conclusion to be drawn...
Systems biological and mechanistic modelling of radiation-induced cancerM P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, London W2 1PG, UK
Radiat Environ Biophys 47:39-47. 2008....
Systematic review of experimental studies on the relative biological effectiveness of tritiumM P Little
Department of Epidemiology and Public Health, Imperial College, London W2 1PG, UK
Radiat Environ Biophys 47:71-93. 2008..17 (95% CI 0.96, 1.39). Again, problems with the design, in particular the range of doses used in some of these studies, mean that these RBE values should also probably not be interpreted as RBE(max)...
Are cancer risks associated with exposures to ionising radiation from internal emitters greater than those in the Japanese A-bomb survivors?Mark P Little
Department of Epidemiology and Public Health, Imperial College London, Faculty of Medicine, St Mary s Campus, Norfolk Place, London, UK
Radiat Environ Biophys 46:299-310. 2007....
Factors associated with fall in neonatal intubation rates in the United Kingdom--prospective studyM P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, St Mary s Campus, and Paediatric Department, St Mary s Hospital, London, UK
BJOG 114:156-64. 2007..To investigate the trend of neonatal resuscitation by intubation or mask ventilation over time and to assess its association with changes in prevalence of caesarean section and use of general anaesthesia in labour...
A multi-compartment cell repopulation model allowing for inter-compartmental migration following radiation exposure, applied to leukaemiaMark P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, London W2 1PG, UK
J Theor Biol 245:83-97. 2007..In general, mutant cell numbers are highly overdispersed, with variance much greater than the mean...
Stochastic modelling of colon cancer: is there a role for genomic instability?Mark P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, London W2 1PG, UK
Carcinogenesis 28:479-87. 2007....
Hemoglobin concentration in pregnancy and perinatal mortality: a London-based cohort studyMark P Little
Department of Epidemiology and Public Health, Imperial College London, Faculty of Medicine, St Mary s Campus, Norfolk Place, United Kingdom
Am J Obstet Gynecol 193:220-6. 2005..The objective of the study was to determine the association between maternal hemoglobin concentration during pregnancy and perinatal mortality...
A model for radiation-induced bystander effects, with allowance for spatial position and the effects of cell turnoverM P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, Norfolk Place, London W2 1PG, UK
J Theor Biol 232:329-38. 2005..It is shown that the generally intractable solution of the full stochastic system can be considerably simplified by assumption of pairwise conditional dependence that varies exponentially over time...
Systematic review of epidemiological studies of exposure to tritiumM P Little
Department of Epidemiology and Public Health, Imperial College, London, UK
J Radiol Prot 28:9-32. 2008..Although the studies presently reported are uninformative on risks from tritium, a number of the occupationally exposed cohorts would be potentially informative, particularly if data were suitably combined...
New models for evaluation of radiation-induced lifetime cancer risk and its uncertainty employed in the UNSCEAR 2006 reportM P Little
Department of Epidemiology and Public Health, Imperial College, London, UK
Radiat Res 169:660-76. 2008..Linear-quadratic-exponential models predict lower risks (at least at low test doses) and appear to fit as well, although for other (theoretical) reasons we favor the simpler linear-quadratic models...
Parameter identifiability and redundancy: theoretical considerationsMark P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, London, United Kingdom
PLoS ONE 5:e8915. 2010..Before data is analysed it is critical to determine which model parameters are identifiable or redundant to avoid ill-defined and poorly convergent regression...
Do non-targeted effects increase or decrease low dose risk in relation to the linear-non-threshold (LNT) model?M P Little
Department of Epidemiology and Biostatistics, Imperial College School of Public Health, Faculty of Medicine, St Mary s Campus, Norfolk Place, London W2 1PG, UK
Mutat Res 687:17-27. 2010..If there is to be modification by low doses of ionizing radiation of cardiovascular disease through this mechanism, a role for non-DNA-targeted effects cannot be excluded...
Parameter identifiability and redundancy in a general class of stochastic carcinogenesis modelsMark P Little
Department of Epidemiology and Public Health, Imperial College, London, UK
PLoS ONE 4:e8520. 2009..Math Biosci 1979 47 55-77), the generalized multistage model of Little (Biometrics 1995 51 1278-1291), and a recently developed cancer model of Nowak et al. (PNAS 2002 99 16226-16231)...
Updated estimates of the proportion of childhood leukaemia incidence in Great Britain that may be caused by natural background ionising radiationMark P Little
Department of Epidemiology and Public Health, Imperial College, London W2 1PG, UK
J Radiol Prot 29:467-82. 2009..The slightly lower attributable proportions compared with those previously derived by Wakeford et al (Leukaemia 2009 23 770-6) are largely due to the lower doses (and in particular lower high LET doses) for the first year of life...
Review and meta-analysis of epidemiological associations between low/moderate doses of ionizing radiation and circulatory disease risks, and their possible mechanismsM P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, Norfolk Place, London, W2 1PG, UK
Radiat Environ Biophys 49:139-53. 2010..Although the predictions of the model are consistent with the epidemiological data, the experimental predictions made have yet to be tested. Further epidemiological and biological evidence will allow a firmer conclusion to be drawn...
Heterogeneity of variation of relative risk by age at exposure in the Japanese atomic bomb survivorsMark P Little
Department of Epidemiology and Public Health, Imperial College, London, UK
Radiat Environ Biophys 48:253-62. 2009..Stratification by solid cancer type slightly weakens the evidence for quadratic variation in relative risk by age at exposure (P = 0.060)...
Cancer and non-cancer effects in Japanese atomic bomb survivorsM P Little
Department of Epidemiology and Public Health, Imperial College, London W2 1PG, UK
J Radiol Prot 29:A43-59. 2009..Further epidemiological and biological evidence will allow a firmer conclusion to be drawn...
Leukaemia following childhood radiation exposure in the Japanese atomic bomb survivors and in medically exposed groupsM P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, St Mary s Campus, Norfolk Place, London W2 1PG, UK
Radiat Prot Dosimetry 132:156-65. 2008..The effects of cell sterilisation can largely explain the discrepancy between the Japanese and the medical series...
A stochastic carcinogenesis model incorporating multiple types of genomic instability fitted to colon cancer dataMark P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, London W21PG, UK
J Theor Biol 254:229-38. 2008..Given the good fit of the model to this large dataset, it is unlikely that further information on presence of genomic instability or of types of genomic instability can be extracted from age-incidence data by extensions of this model...
The bystander effect model of Brenner and Sachs fitted to lung cancer data in 11 cohorts of underground miners, and equivalence of fit of a linear relative risk model with adjustment for attained age and age at exposureM P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, St Mary s Campus, Norfolk Place, London W2 1PG, UK
J Radiol Prot 24:243-55. 2004..In particular, both models are capable of describing the observed inverse dose rate effect in this data set...
Risks associated with ionizing radiationM P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, St Mary s Campus, London, UK
Br Med Bull 68:259-75. 2003..Risks among occupationally exposed groups such as nuclear workforces and underground miners are generally consistent with those observed in the Japanese atomic bomb survivors...
Association between microfilarial load and excess mortality in onchocerciasis: an epidemiological studyM P Little
Department of Epidemiology and Public Health, Imperial College London, London, UK
Lancet 363:1514-21. 2004..Excess mortality has been noted among people with onchocerciasis, but it is not clear whether this effect is entirely due to blindness, or mediated by some more direct effects of the infection...
A stochastic carcinogenesis model incorporating genomic instability fitted to colon cancer dataM P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, London, UK
Math Biosci 183:111-34. 2003....
Threshold and other departures from linear-quadratic curvature in the non-cancer mortality dose-response curve in the Japanese atomic bomb survivorsMark P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, London W2 1PG, UK
Radiat Environ Biophys 43:67-75. 2004..Again, increasing the size of the errors resulted in wider confidence intervals on the power of dose, without marked effect on the central estimates. In general these findings remain true for various non-cancer disease subtypes...
Potential funding crisis for the Radiation Effects Research FoundationMark P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, London W2 1PG, UK
Lancet 364:557-8. 2004
A model of cardiovascular disease giving a plausible mechanism for the effect of fractionated low-dose ionizing radiation exposureMark P Little
Department of Epidemiology and Public Health, Faculty of Medicine, Imperial College London, London, United Kingdom
PLoS Comput Biol 5:e1000539. 2009..The analysis of the present paper suggests that linear extrapolation would be appropriate for this endpoint...
Incidence of blindness during the Onchocerciasis control programme in western Africa, 1971-2002Mark P Little
Department of Epidemiology and Public Health, Imperial College London, Faculty of Medicine, St Mary s Campus, London, United Kingdom
J Infect Dis 189:1932-41. 2004..Infection with Onchocerca volvulus is associated with the prevalence of severe visual impairment and blindness. However, longitudinal studies of the incidence of blindness caused by onchocerciasis are scarce...
Flexible dose-response models for Japanese atomic bomb survivor data: Bayesian estimation and prediction of cancer riskJames Bennett
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, St Mary's Campus, Norfolk Place, London, W2 1PG, UK
Radiat Environ Biophys 43:233-45. 2004..Overall, cancer incidence risks predicted by Bayesian Markov Chain Monte Carlo methods are similar to those derived by classical likelihood-based methods and which form the basis of established estimates of radiation-induced cancer risk...
Absence of evidence for differences in the dose-response for cancer and non-cancer endpoints by acute injury status in the Japanese atomic-bomb survivorsMark P Little
Department of Epidemiology and Public Health, Imperial College Faculty of Medicine, St Mary s Campus, Norfolk Place, London W2 1PG, UK
Int J Radiat Biol 78:1001-10. 2002..To ascertain possible evidence for radiosensitive subgroups in the Japanese atomic-bomb survivors...
Comparisons of lung tumour mortality risk in the Japanese A-bomb survivors and in the Colorado Plateau uranium miners: support for the ICRP lung modelM P Little
Department of Epidemiology and Public Health, Imperial College of Science, Technology and Medicine, St Mary s Campus, Norfolk Place, London, W2 1PG, UK
Int J Radiat Biol 78:145-63. 2002..To estimate the ratio of risks for exposure to radon progeny relative to low-LET radiation based on human lung cancer data, taking account of possible time and age variations in radiation-induced lung cancer risk...
The bystander effect in experimental systems and compatibility with radon-induced lung cancer in humansM P Little
Department of Epidemiology and Public Health, Imperial College of Science, Technology and Medicine, London, UK
J Radiol Prot 22:A27-31. 2002..Other experimental data relating to the bystander effect after alpha-particle exposure are surveyed; some of these data are more compatible with the epidemiological data...
The proportion of thyroid cancers in the Japanese atomic bomb survivors associated with natural background radiationM P Little
Department of Epidemiology and Public Health, Imperial College of Science, Technology and Medicine, London, UK
J Radiol Prot 22:279-91. 2002..5% for those over the age of 60, assuming that the absolute risk model applies. There is a similar increase in this percentage, if to a rather lower level (from 0.2 to 10.2%), assuming that the relative risk model applies...
Comparison of the risks of cancer incidence and mortality following radiation therapy for benign and malignant disease with the cancer risks observed in the Japanese A-bomb survivorsM P Little
Department of Epidemiology and Public Health, Imperial College School of Medicine, Norfolk Place, London, UK
Int J Radiat Biol 77:431-64. 2001....
Derivation of low-dose extrapolation factors from analysis of curvature in the cancer incidence dose response in Japanese atomic bomb survivorsM P Little
Department of Epidemiology and Public Health, Imperial College School of Medicine, London, UK
Int J Radiat Biol 76:939-53. 2000..To assess the degree of overestimation in low-dose cancer risk when models linear in dose are fitted to cancer data...
A comparison of the degree of curvature in the cancer incidence dose-response in Japanese atomic bomb survivors with that in chromosome aberrations measured in vitroM P Little
Department of Epidemiology and Public Health, Imperial College School of Medicine, St Mary s Campus, London, UK
Int J Radiat Biol 76:1365-75. 2000..To compare the degree of curvature in the dose-response for chromosome aberrations and for radiation-induced cancer...
Cancer after exposure to radiation in the course of treatment for benign and malignant diseaseM P Little
Department of Epidemiology and Public Health, Imperial College School of Medicine, London, UK
Lancet Oncol 2:212-20. 2001..This increase in risk has to be balanced against the generally high spontaneous cancer risk in these individuals and the benefits accruing from radiotherapy...
The statistical power of epidemiological studies analyzing the relationship between exposure to ionizing radiation and cancer, with special reference to childhood leukemia and natural background radiationM P Little
Department of Epidemiology and Biostatistics, School of Public Health, Imperial College Faculty of Medicine, London W2 1PG, United Kingdom
Radiat Res 174:387-402. 2010..Sufficiently large studies should be capable of detecting the predicted risk attributable to natural background radiation...
The bystander effect in C3H 10T cells and radon-induced lung cancerM P Little
Department of Epidemiology and Public Health, Imperial College of Science, Technology and Medicine, St Mary s Campus, Norfolk Place, London W2 1PG, United Kingdom
Radiat Res 156:695-9. 2001..As a consequence, the bystander effect observed in the experimental C3H 10T(1/2) cell system probably does not play a large part in the process of radon-induced lung carcinogenesis in humans...
Modelling lung tumour risk in radon-exposed uranium miners using generalizations of the two-mutation model of Moolgavkar, Venzon and KnudsonMark P Little
Department of Epidemiology and Public Health, Imperial College of Science, Technology and Medicine, St Mary s Campus, Norfolk Place, London W2 1PG, UK
Int J Radiat Biol 78:49-68. 2002..To model radon-induced lung cancer in uranium miners using a quasi-biological model of carcinogenesis...
Maternal blood pressure in pregnancy, birth weight, and perinatal mortality in first births: prospective studyPhilip J Steer
Academic Department of Obstetrics and Gynaecology, Imperial College London, Faculty of Medicine, Chelsea and Westminster Hospital, London SW10 9NH
BMJ 329:1312. 2004..To investigate the relation of diastolic blood pressure in pregnancy with birth weight and perinatal mortality...
Change in salt intake affects blood pressure of chimpanzees: implications for human populationsPaul Elliott
Department of Epidemiology and Public Health, Imperial College London, Faculty of Medicine, St Mary s Campus, Norfolk Place, London W2 1PG, UK
Circulation 116:1563-8. 2007..Effects of more modest alterations to sodium intakes in chimpanzees, akin to current efforts to lower sodium intakes in the human population, are unknown...
River blindness: a success story under threat?Maria Gloria Basanez
Department of Infectious Disease Epidemiology, Imperial College of Science, Technology and Medicine, London, United Kingdom
PLoS Med 3:e371. 2006
Transmission intensity and the patterns of Onchocerca volvulus infection in human communitiesMaria Gloria Basanez
Department of Infectious Disease Epidemiology, Imperial College School of Medicine, St Mary s Campus, London, United Kingdom
Am J Trop Med Hyg 67:669-79. 2002..ochraceum than in those where the vector is S. damnosum. A role for focal vector control in Mexico and Guatemala, in addition to nodulectomy and ivermectin, is suggested...
Human infection patterns and heterogeneous exposure in river blindnessJoao A N Filipe
Department of Infectious Disease Epidemiology, Imperial College London, Norfolk Place, London W2 1PG, United Kingdom
Proc Natl Acad Sci U S A 102:15265-70. 2005..The basic reproductive number, R0, ranges from 5 to 8, which is slightly above estimates for other helminth parasites but well below previously presented values...
Childhood cancer after low-level intrauterine exposure to radiationRichard Wakeford
BNFL, Risley, Warrington, Cheshire, UK
J Radiol Prot 22:A123-7. 2002..Nonetheless, the evidence does suggest that the risk is not zero at doses of the order of 10 mSv...
Comment on "Use of A-bomb survivor studies as a basis for nuclear worker compensation"Mark P Little
Environ Health Perspect 111:A267-8. 2003
Radiation: a dose of the bombMark P Little
Nature 424:495-6. 2003
Radiation-induced leukemia at doses relevant to radiation therapy: modeling mechanisms and estimating risksIgor Shuryak
Center for Radiological Research, Columbia University Medical Center, 630 West 168th St, New York, NY 10032, USA
J Natl Cancer Inst 98:1794-806. 2006....
Risks of non-cancer disease incidence and mortality in the Japanese atomic bomb survivorsMark P Little
J Radiol Prot 24:327-8. 2004
Funding crisis at the Radiation Effects Research FoundationMark P Little
J Radiol Prot 24:195-7. 2004
Does gestation vary by ethnic group? A London-based study of over 122,000 pregnancies with spontaneous onset of labourRoshni R Patel
Epidemiology Unit, Department of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, University of London, Keppel St, London WC1E 7HT, UK
Int J Epidemiol 33:107-13. 2004..Evidence exists that normal gestational length varies with ethnicity. This UK-based study compares gestational length amongst a cohort of white European, Black and Asian women...
Early growth and adult respiratory function in men and women followed from the fetal period to adulthoodDexter Canoy
Department of Public Health Science and General Practice, University of Oulu, Finland
Thorax 62:396-402. 2007..A study was undertaken to determine the association between early growth and adult respiratory function...
