Dr Graham Hepworth
Contact Details
e-mail:hepworth@unimelb.edu.au
Phone: (03) 8344 4796
Fax: (03) 8344 7499
Consulting
I provide statistical consulting for external clients and for researchers and postgraduate students within the University. I have a particular interest in experimental design, having worked as a statistical consultant (biometrician) for Agriculture Victoria for many years.
Teaching
I teach the short courses "Design and Analysis of Surveys" and "Design and Analysis of Experiments" run by the Statistical Consulting Centre. Formerly I co-ordinated the subject "Experimental Design/Statistical Methods" for second-year students in the Melbourne School of Land and Environment.
Research interests
- Estimation of proportions by group testing
- Interval estimation for discrete data
- Bias correction of point estimates in discrete data problems
- Statistics in sport
Recent publications
2009
- G. Hepworth & R.K. Watson. Debiased estimation of proportions in group testing. Accepted for publication in Journal of the Royal Statistical Society: Series C (Applied Statistics).
- M.J. McCullough, G. Hepworth, I.R. Gordon, K.V. Clemons & D.A. Stevens. Molecular epidemiology of global Candida dubliniensis isolates utilizing genomic-wide, co-dominant, PCR-based markers for strain delineation. Accepted for publication in Medical Mycology.
- E.K. Waters, A.J. Hamilton, G. Hepworth, H.J. Kim, W.S. Pak & M.J. Furlong. The influence of management practice on the spatial distribution of Lepidopteran pests in Brassica crops in the Democratic People’s Republic of Korea: implications for sequential sampling plans. Accepted for publication in Population Ecology.
- K. Wilkinson, D. Beardsell, G. Hepworth, E. Tee, V. Hood & C. Hudson. Effect of maturation of grease-trap compost on plant growth. Accepted for publication in Compost Science and Utilization.
- P. Gibson-Roy, J.Delpratt, G. Moore & G. Hepworth. Australian temperate grassland restoration: does diversity influence soil nitrate, light availability and productivity? Accepted for publication in Ecological Management & Restoration.
2008
- J. Cavalieri, V.M. Smart, G. Hepworth, M. Ryan & K.L. Macmillan. Ovarian follicular development and hormone concentrations in inseminated cows with resynchronized estrous cycles. Theriogenology 70: 946–955.
- J. Tiller, D. Ames, H. Brodaty, G. Byrne, S. Chawla, G. Halliday, G. Hepworth, P. McArdle, I. Schweitzer & J. Snowdon. Antipsychotic use in the elderly: what doctors say they do, and what they do. Australasian Journal on Ageing 27: 134–142.
2007
- G. Hepworth, I.R. Gordon & M.J. McCullough. Accounting for dependence in similarity data from DNA fingerprinting. Statistical Applications in Genetics and Molecular Biology 6: Issue 1, Article 1.
- J. Cavalieri, G. Hepworth, V.M. Smart, M. Ryan & K.L. Macmillan. Reproductive performance of lactating dairy cows and heifers resychronized for a second insemination with an intravaginal progesterone releasing device for 7 or 8 days with estradiol benzoate injected at the time of device insertion and 24 h after removal. Theriogenology 67:824–834.
2006
- J. Cavalieri, G. Hepworth, L.A. Fitzpatrick, R.W. Sheppard & K.L. Macmillan. Manipulation and control of the estrous cycle in pasture-based dairy cows. Theriogenology 65: 45–64.
2005
- G. Hepworth. Confidence intervals for proportions estimated by group testing with groups of unequal size. Journal of Agricultural, Biological and Environmental Statistics 10: 478–497.
- J. Cavalieri, A. Rabiee, G. Hepworth & K.L. Macmillan. Effect of artificial insemination on submission rates of lactating dairy cows synchronised and resynchronised with intravaginal progesterone releasing devices and oestradiol benzoate. Animal Reproduction Science 90: 39–55.
- J. Cavalieri, G. Hepworth & L.A. Fitzpatrick. Synchronising oestrus with oestradiol benzoate after using a two-dose prostaglandin treatment to synchronise luteolysis in dairy heifers. Australian Veterinary Journal 83: 91–96.
- A.J. Hamilton, V.L. Versace, G. Hepworth, F. Stagnitti, J. Dawson, P.M. Ridland, N.M. Endersby, N.A. Schellhorn, C. Mansfield & P.M. Rogers. Attending to risk in sequential sampling plans. In Environmental Health Risk III, C.A. Brebbia, V. Popov & D. Fayzieva (eds.). The Sustainable World series, vol. 13. Wessex Institute of Technology. pp. 11–20.
2004
- G. Hepworth. Mid-P confidence intervals based on the likelihood ratio for proportions estimated by group testing. Australian and New Zealand Journal of Statistics 46: 391–405.
- A.J. Hamilton & G. Hepworth. Accounting for cluster sampling in constructing enumerative sequential sampling plans. Journal of Economic Entomology 97: 1132–1136.
- R. Goodman & G. Hepworth. Densities of feral honeybee Apis mellifera colonies in Victoria. The Victorian Naturalist 121: 210–214.
- J. Cavalieri, G. Hepworth & K.L. MacMillan. Ovarian follicular development in Holstein cows following synchronisation of oestrus with oestradiol benzoate and an intravaginal progesterone releasing insert for 5 to 9 days and duration of the oestrus cycle and concentrations of progesterone following ovulation. Animal Reproduction Science 81: 177–193.
- J. Cavalieri, G. Hepworth & L.A. Fitzpatrick. Comparison of two estrus synchronization and resynchronization treatments in lactating dairy cows. Theriogenology
62: 729–747.
2003
- J. Cavalieri, G. Hepworth, K.I. Parker, P.J. Wright & K.L. Macmillan. Effect of treatment with progesterone and oestradiol when starting treatment with an intravaginal progesterone releasing insert on ovarian follicular development and hormonal concentrations in Holstein cows. Animal Reproduction Science 76: 177–193.
- B.A. McKee, R.D. Goodman, C. Saywell & G. Hepworth. Oxytetracycline hydrochloride activity in honeybee larvae (Apis mellifera) following medication with various doses. Apidologie 34: 269–279.
- J. Cavalieri, G. Hepworth, V.E. Eagles & K.L. Macmillan. Comparison of two doses of oestradiol benzoate administered at a resynchronised oestrus on reproductive performance of dairy cows. Australian Veterinary Journal 81: 348–354.