Mr Kim Colyvas

Mr Kim Colyvas

Consulting Unit Manager

School of Mathematical and Physical Sciences (Statistics)

Career Summary

Biography

Research Expertise
Application of Statistics over a wide range of areas, mainly focused in Psychology, Ecology and Biology but also covering Health and Medicine, Linguistics and Speech pathology, Education, Business, Engineering, various sciences including Chemistry, Geology and Physics and industrial applications.  

Statistical help is provided in the analysis of data to understand the important effects in a study, setting up data in preparation for analysis, use of statistical software, how to prepare reports for publication, design of experiments, visualising data, process improvement, Total Quality Management, Statistical Process Control, sampling of raw materials, measurement systems and their performance.


Qualifications

  • Master of Statistics, University of Newcastle
  • Bachelor of Science (Honours), University of Newcastle
  • Master of Science, University of Newcastle

Keywords

  • Ecology
  • Health
  • Psychology
  • Statistics

Languages

  • English (Mother)
  • Greek (Working)

Fields of Research

Code Description Percentage
111199 Nutrition and Dietetics not elsewhere classified 50
111499 Paediatrics and Reproductive Medicine not elsewhere classified 25
111799 Public Health and Health Services not elsewhere classified 25
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Publications

For publications that are currently unpublished or in-press, details are shown in italics.


Journal article (26 outputs)

Year Citation Altmetrics Link
2016 Dempsey I, Valentine M, Colyvas K, 'The Effects of Special Education Support on Young Australian School Students', International Journal of Disability, Development and Education, 63 271-292 (2016)

© 2015 Taylor & Francis.Determining the effectiveness of many special education interventions is most difficult because of the practical and ethical limitations associated with a... [more]

© 2015 Taylor & Francis.Determining the effectiveness of many special education interventions is most difficult because of the practical and ethical limitations associated with assigning participants to a control or non-treated group. Using Longitudinal Study of Australian Children data, this article utilised eight different propensity score analysis methods to determine if a cohort of young primary school children receiving special education services significantly improved their literacy and numeracy skills, social skills and their behaviour, two years after the commencement of the special service, in comparison to a ¿matched¿ group of students who did not receive special education support. The children receiving special education support performed statistically significantly less well than the different matched groups across all outcome measures. This result is consistent with the findings from two similar studies in the US and calls into question the effectiveness of special education services for the majority of Australian students with additional needs.

DOI 10.1080/1034912X.2015.1091066
2015 Unicomb R, Colyvas K, Harrison E, Hewat S, 'Assessment of reliable change using 95% credible intervals for the differences in proportions: A statistical analysis for case-study methodology', Journal of Speech, Language, and Hearing Research, 58 728-739 (2015) [C1]

© 2015 American Speech-Language-Hearing Association.Purpose: Case-study methodology studying change is often used in the field of speech-language pathology, but it can be critici... [more]

© 2015 American Speech-Language-Hearing Association.Purpose: Case-study methodology studying change is often used in the field of speech-language pathology, but it can be criticized for not being statistically robust. Yet with the heterogeneous nature of many communication disorders, case studies allow clinicians and researchers to closely observe and report on change. Such information is valuable and can further inform large-scale experimental designs. In this research note, a statistical analysis for case-study data is outlined that employs a modification to the Reliable Change Index (Jacobson & Truax, 1991). The relationship between reliable change and clinical significance is discussed. Example data are used to guide the reader through the use and application of this analysis. Method: A method of analysis is detailed that is suitable for assessing change in measures with binary categorical outcomes. The analysis is illustrated using data from one individual, measured before and after treatment for stuttering. Conclusions: The application of this approach to assess change in categorical, binary data has potential application in speech-language pathology. It enables clinicians and researchers to analyze results from case studies for their statistical and clinical significance. This new method addresses a gap in the research design literature, that is, the lack of analysis methods for noncontinuous data (such as counts, rates, proportions of events) that may be used in case-study designs.

DOI 10.1044/2015_JSLHR-S-14-0158
Citations Scopus - 1
Co-authors Sally Hewat, Rachael Unicomb
2015 Masoe AV, Blinkhorn AS, Colyvas K, Taylor J, Blinkhorn FA, 'Reliability study of clinical electronic records with paper records in the NSW Public Oral Health Service.', Public health research & practice, 25 e2521519 (2015) [C1]
Co-authors Jane Taylor
2015 Spencer E, Ferguson A, Craig H, Colyvas K, Hankey GJ, Flicker L, 'Propositional idea density in older men's written language: Findings from the HIMS study using computerised analysis', Clinical Linguistics and Phonetics, 29 85-101 (2015) [C1]

© 2015 Informa UK Ltd.Decline in linguistic function has been associated with decline in cognitive function in previous research. This research investigated the informativeness o... [more]

© 2015 Informa UK Ltd.Decline in linguistic function has been associated with decline in cognitive function in previous research. This research investigated the informativeness of written language samples of Australian men from the Health in Men's Study (HIMS) aged from 76 to 93 years using the Computerised Propositional Idea Density Rater (CPIDR 5.1). In total, 60 255 words in 1147 comments were analysed using a linear-mixed model for statistical analysis. Results indicated no relationship with education level (p = 0.79). Participants for whom English was not their first learnt language showed Propositional Idea Density (PD) scores slightly lower (0.018 per 1 word). Mean PD per 1 word for those for whom English was their first language for comments below 60 words was 0.494 and above 60 words 0.526. Text length was found to have an effect (p = <0.0001). The mean PD was higher than previously reported for men and lower than previously reported for a similar cohort for Australian women.

DOI 10.3109/02699206.2014.956263
Co-authors Alison Ferguson, Hugh Craig, Elizabeth Spencer
2014 Manning J, Dwyer P, Rosamilia A, Colyvas K, Murray C, Fitzgerald E, 'A multicentre, prospective, randomised, double-blind study to measure the treatment effectiveness of abobotulinum A (AboBTXA) among women with refractory interstitial cystitis/bladder pain syndrome', INTERNATIONAL UROGYNECOLOGY JOURNAL, 25 593-599 (2014)
DOI 10.1007/s00192-013-2267-8
Citations Scopus - 9Web of Science - 5
2014 Ferguson A, Spencer E, Craig H, Colyvas K, 'Propositional Idea Density in women's written language over the lifespan: Computerized analysis', Cortex, 55 107-121 (2014) [C1]
DOI 10.1016/j.cortex.2013.05.012
Citations Scopus - 2Web of Science - 1
Co-authors Elizabeth Spencer, Alison Ferguson, Hugh Craig
2014 Foreman P, Arthur-Kelly M, Bennett D, Neilands J, Colyvas K, 'Observed changes in the alertness and communicative involvement of students with multiple and severe disability following in-class mentor modelling for staff in segregated and general education classrooms', JOURNAL OF INTELLECTUAL DISABILITY RESEARCH, 58 704-720 (2014) [C1]
DOI 10.1111/jir.12066
Citations Scopus - 4Web of Science - 2
Co-authors Michael Arthur-Kelly, Phil Foreman
2014 Patrick JW, Colyvas K, 'Crop yield components - photoassimilate supply- or utilisation limited-organ development?', FUNCTIONAL PLANT BIOLOGY, 41 893-913 (2014) [C1]
DOI 10.1071/FP14048
Citations Scopus - 5Web of Science - 5
Co-authors John Patrick
2013 Bryant L, Spencer E, Ferguson A, Craig H, Colyvas K, Worrall L, 'Propositional Idea Density in aphasic discourse', Aphasiology, 27 992-1009 (2013) [C1]
DOI 10.1080/02687038.2013.803514
Citations Scopus - 1Web of Science - 2
Co-authors Hugh Craig, Alison Ferguson, Elizabeth Spencer
2013 Cassey J, Armstrong P, Colyvas K, Stanger R, 'Comment on 'Prevention of intraoperative hypothermia...' Witt L, Denhardt N, Eich C et al.', PEDIATRIC ANESTHESIA, 23 970-970 (2013) [C3]
DOI 10.1111/pan.12251
Co-authors Rohan Stanger
2012 Spencer EL, Craig DH, Ferguson AJ, Colyvas KJ, 'Language and ageing - Exploring propositional density in written language - Stability over time', Clinical Linguistics & Phonetics, 26 743-754 (2012) [C1]
Citations Scopus - 3Web of Science - 3
Co-authors Hugh Craig, Elizabeth Spencer, Alison Ferguson
2012 Morrison MK, Koh D, Lowe J, Miller YD, Marshall AL, Colyvas KJ, Collins CE, 'Postpartum diet quality in Australian women following a gestational diabetes pregnancy', European Journal of Clinical Nutrition, 66 1160-1165 (2012) [C1]
Citations Scopus - 5Web of Science - 5
Co-authors Clare Collins
2012 Bowman JA, Wiggers JH, Colyvas KJ, Wye PM, Walsh RA, Bartlem KM, 'Smoking cessation among Australian methadone clients: Prevalence, characteristics and a need for action', Drug and Alcohol Review, 31 507-513 (2012) [C1]
Citations Scopus - 9Web of Science - 9
Co-authors John Wiggers, Jenny Bowman
2011 Collins CE, Okely AD, Morgan PJ, Jones RA, Burrows TL, Cliff DP, et al., 'Parent diet modification, child activity, or both in obese children: An RCT', Pediatrics, 127 619-627 (2011) [C1]
DOI 10.1542/peds.2010-1518
Citations Scopus - 46Web of Science - 40
Co-authors Tracy Burrows, Philip Morgan, Clare Collins
2011 Cliff DP, Okely AD, Morgan PJ, Steele JR, Jones RA, Colyvas KJ, Baur LA, 'Movement skills and physical activity in obese children: Randomized controlled trial', Medicine & Science in Sports & Exercise, 43 90-100 (2011) [C1]
DOI 10.1249/MSS.0b013e3181e741e8
Citations Scopus - 24Web of Science - 24
Co-authors Philip Morgan
2010 Al-Dala'In TA, Luo S, Summons PF, Colyvas KJ, 'Evaluating the utilisation of mobile devices in online payments from the consumer perspective', Journal of Convergence Information Technology, 5 7-16 (2010) [C1]
DOI 10.4156/jcit.vol5.issue2.1
Citations Scopus - 5
Co-authors Suhuai Luo, Peter Summons
2010 Turner A, Phillips L, Hambridge JA, Baker AL, Bowman JA, Colyvas KJ, 'Clinical outcomes associated with depression, anxiety and social support among cardiac rehabilitation attendees', Australian and New Zealand Journal of Psychiatry, 44 658-666 (2010) [C1]
DOI 10.3109/00048671003646751
Citations Scopus - 19Web of Science - 18
Co-authors Jenny Bowman, Amanda Baker
2010 Okely AD, Collins CE, Morgan PJ, Jones RA, Warren JM, Cliff DP, et al., 'Multi-site randomized controlled trial of a child-centered physical activity program, a parent-centered dietary-modification program, or both in overweight children: The HIKCUPS study', Journal of Pediatrics, 157 388-394 (2010) [C1]
DOI 10.1016/j.jpeds.2010.03.028
Citations Scopus - 40Web of Science - 42
Co-authors Clare Collins, Tracy Burrows, Philip Morgan
2009 Burrows TL, Warren JM, Colyvas KJ, Garg ML, Collins CE, 'Validation of overweight children's fruit and vegetable intake using plasma carotenoids', Obesity, 17 162-168 (2009) [C1]
DOI 10.1038/oby.2008.495
Citations Scopus - 48Web of Science - 36
Co-authors Clare Collins, Manohar Garg, Tracy Burrows
2009 Stanger RJ, Colyvas KJ, Cassey JG, Robinson IA, Armstrong P, 'Predicting the efficacy of convection warming in anaesthetized children', British Journal of Anaesthesia, 103 275-282 (2009) [C1]
DOI 10.1093/bja/aep160
Citations Scopus - 6Web of Science - 5
Co-authors Rohan Stanger
2009 Smart CE, Ross K, Edge JA, Collins CE, Colyvas KJ, King BR, 'Children and adolescents on intensive insulin therapy maintain postprandial glycaemic control without precise carbohydrate counting', Diabetic Medicine, 26 279-285 (2009) [C1]
DOI 10.1111/j.1464-5491.2009.02669.x
Citations Scopus - 30Web of Science - 19
Co-authors Clare Collins, Bruce King
2008 Reeves SG, Rich D, Meldrum CJ, Colyvas KJ, Kurzawski G, Suchy J, et al., 'IGF1 is a modifier of disease risk in hereditary non-polyposis colorectal cancer', International Journal of Cancer, 123 1339-1343 (2008) [C1]
DOI 10.1002/ijc.23668
Citations Scopus - 19Web of Science - 17
Co-authors Rodney Scott
2005 Fahy KM, Colyvas KJ, 'Safety of the Stockholm birth center study: A critical review', Birth-Issues in Perinatal Care, 32 145-150 (2005) [C1]
DOI 10.1111/j.0730-7659.2005.00358.x
Citations Scopus - 2Web of Science - 1
1998 Flanagan K, Colyvas K, Tuyl F, 'Injury after absence: a steel industry study', Journal of Occupational Health and Safety, Australia and New Zealand, 14 167-178 (1998)
Co-authors Frank Tuyl
1982 COLYVAS K, TIETZE HR, EGRI SKJ, 'THE STRUCTURE OF DICHLORO(L-HISTIDINE)COPPER(II)', AUSTRALIAN JOURNAL OF CHEMISTRY, 35 1581-1586 (1982)
Citations Scopus - 8Web of Science - 9
1973 Colyvas K, Cooney RP, Walker WR, 'Laser raman and infrared spectral studies on imidazolium complexes of bivalent copper and zinc', Australian Journal of Chemistry, 26 2059-2062 (1973)

The complexes [imH2]2 [CuCl4], [imH2], [CuBr4], and [imH2]2[ZnCl4] containing the imidazolium cation [imH2]+ have been prepared for the first time and studied by laser Raman and i... [more]

The complexes [imH2]2 [CuCl4], [imH2], [CuBr4], and [imH2]2[ZnCl4] containing the imidazolium cation [imH2]+ have been prepared for the first time and studied by laser Raman and infrared spectroscopy. The spectroscopic data are compared to those from studies with imidazole, imidazolium chloride, methylammonium tetrachlorocuprate(II), caesium tetrachlorocuprate(II), and caesium tetrachlorozincate(II). It is concluded that in [imH2]2 [MCl4] (M = Cu and Zn), a distorted tetrahedral (D2d) model is favoured for [CuCl4]2- and that [ZnCl4]2- possesses a slight distortion from Td symmetry. © 1973, CSIRO. All rights reserved.

DOI 10.1071/CH9732059
Citations Scopus - 3
Show 23 more journal articles

Conference (12 outputs)

Year Citation Altmetrics Link
2015 Spencer E, Ferguson A, Craig DH, Colyvas K, Hankey G, Flicker L, 'Propositional Idea Density as a Measure of Informativeness in Older Men¿s Written Descriptions of Health: Considerations for Clinical Use' (2015) [E3]
Co-authors Elizabeth Spencer, Hugh Craig, Alison Ferguson
2014 Stockings EA, Bowman JA, Baker AL, Terry M, Clancy R, Wye PM, et al., 'IMPACT OF A POST-DISCHARGE SMOKING CESSATION INTERVENTION FOR SMOKERS ADMITTED TO A SMOKE-FREE PSYCHIATRIC HOSPITAL: A RANDOMISED CONTROLLED TRIAL', ASIA-PACIFIC JOURNAL OF CLINICAL ONCOLOGY (2014) [E3]
Co-authors Richard Clancy, Jenny Bowman, Amanda Baker, John Wiggers
2014 Stockings EA, Bowman JA, Bartlem KM, McElwaine KM, Baker AL, Terry M, et al., 'QUALITY OF IMPLEMENTATION OF A SMOKE-FREE POLICY IN AN INPATIENT PSYCHIATRIC FACILITY: ASSOCIATION WITH PATIENT ACCEPTABILITY', ASIA-PACIFIC JOURNAL OF CLINICAL ONCOLOGY (2014) [E3]
Citations Web of Science - 1
Co-authors John Wiggers, Richard Clancy, Jenny Bowman, Amanda Baker
2013 Spencer EL, Craig H, Colyvas K, 'Propositional Idea Density in written descriptions of health: Potential clinical applications', . (2013)
Co-authors Elizabeth Spencer, Hugh Craig
2013 Spencer E, Ferguson A, Craig DH, Colyvas K, '43rd Clinical Aphasiology Conference' (2013)
Co-authors Elizabeth Spencer, Hugh Craig, Alison Ferguson
2012 Bowman JA, Wiggers JH, Colyvas KJ, Wye PM, Walsh RA, Bartlem K, 'The need and potential for assisting clients of opioid substitution programs to quit smoking', Drug and Alcohol Review: Abstracts of the Australasian Professional Society on Alcohol and other Drugs Conference 2012 (2012) [E3]
Co-authors John Wiggers, Jenny Bowman
2011 Colyvas KJ, Moffiet TN, 'Statistical consulting under ASEARC', Proceedings of the 4th Applied Statistics Education and Research Collaboration (ASEARC) Conference (2011) [E3]
Co-authors Trevor Moffiet
2008 O'Brien S, Michie PT, Halpin S, Colyvas KJ, Schall UA, Carr VJ, 'Neuropsychological profiles in ultra high risk individuals and in first episode of psychosis or schizophrenia', Early Intervention in Psychiatry (2008) [E3]
Co-authors Sean Halpin, Pat Michie, Ulrich Schall
2008 Guy LM, Learmouth A, Colyvas KJ, Peres C, Pitkin A, 'Effects of a workplace health & wellness program on employee fitness, strength and well-being', The Safety Conference. Abstracts (2008) [E3]
2008 Phillips L, Turner A, Hambridge J, Baker AL, Bowman JA, Colyvas KJ, 'Clinical outcomes associated with depression, anxiety and social support among cardiac rehabiliation attendees', Australian and New Zealand Journal of Psychiatry (2008) [E3]
Co-authors Jenny Bowman, Amanda Baker
2008 Michie PT, O'Brien-Dines ST, Halpin S, Colyvas KJ, Schall UA, Carr VJ, 'Neurophychological profiles of young people at risk of developing schizophrenia', Schizophrenia Research (2008) [E3]
DOI 10.1016/s0920-9964(08)70468-7
Co-authors Pat Michie, Ulrich Schall
2007 Reeves SG, Scott R, Rich D, Meldrum CJ, Colyvas KJ, Kurzawski G, et al., 'IGF-1 is a modifier of disease risk in Hereditary non-polyposis colorectal cancer', Journal of Medical Genetics (2007) [E3]
Co-authors Rodney Scott
Show 9 more conferences
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Mr Kim Colyvas

Positions

Consulting Unit Manager
School of Mathematical and Physical Sciences
Faculty of Science and Information Technology

Casual Consulting Unit Manager
School of Mathematical and Physical Sciences
Faculty of Science and Information Technology

Focus area

Statistics

Contact Details

Email kim.colyvas@newcastle.edu.au
Phone (02) 4921 7759
Fax (02) 4921 6898

Office

Room V240
Building Mathematics
Location Callaghan
University Drive
Callaghan, NSW 2308
Australia
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