Variation in and prognostic importance of troponin T measured using a high-sensitivity assay in clinically stable haemodialysis patients.
Clinical Kidney Journal 6(4):402 (2013)
A recently introduced high-sensitivity assay can measure troponin T (hsT) at low levels with greater precision than the fourth generation troponin T assay. As most patients with end-stage renal failure (ESRF) may have elevated hsT levels, data on biological variability and the impact of haemodia...
Harmonisation of growth hormone assays in australasia.
The Clinical biochemist. Reviews / Australian A... 33(3):101 (2012)
Delayed puberty from partial 17-alpha hydroxylase enzyme deficiency.
New Zealand Medical Journal 125(1355):71 (2012)
An 18-year-old woman with primary amenorrhoea and pubertal delay was investigated for mild labile hypertension and secondary hypogonadism. Low renin and normal aldosterone levels combined with evidence of primary adrenal insufficiency suggested partial 17-alpha hydroxylase enzyme deficiency. The...
Clinical diagnosis and outcomes for Troponin T 'positive' patients assessed by a high sensitivity compared with a 4th generation assay.
Emergency Medicine Australasia 23(4):490 (2011)
High sensitivity troponin T (hsTnT) detects lower levels of troponin T with greater precision than the 4th generation (cTnT) assay. However, the clinical implications of this are uncertain.
Primary: Describe the proportion of patients who test 'positive' with hsTnT but negative with cTnT. Second...
The geometric classification of rotator cuff tears: a system linking tear pattern to treatment and prognosis.
Arthroscopy: The Journal of Arthroscopic & Rela... 26(3):417 (2010)
A valuable classification system allows for communication among surgeons and/or other investigators and offers information on treatment and prognosis. It provides a means for comparison of epidemiologic data and treatment outcomes. There is no current standard classification for rotator cuff tea...
Tests for cointegration with structural breaks based on subsamples
Computational Statistics & Data Analysis 54(11):2498 (2010)
Tests for cointegration with allowance for structural breaks using the extrema of residual-based tests over subsamples of the data are considered. One motivation for the approach is to formalize the practice of data snooping by practitioners, who may examine subsamples after failing to find...
An epidemic of nonexistent iodine deficiency due to inappropriate urine iodide testing and reference ranges.
New Zealand Medical Journal 122(1291):109 (2009)
Type I and type II fractional Brownian motions: A reconsideration
Computational Statistics & Data Analysis 53(6):2089 (2009)
The so-called type I and type II fractional Brownian motions are limit distributions associated with the fractional integration model in which pre-sample shocks are either included in the lag structure, or suppressed. There can be substantial differences between the distributions of these t...
Tests of bias in log-periodogram regression
Economics Letters 102(2):83 (2009)
This paper proposes simple Hausman-type tests to check for bias in the log-periodogram regression of a time series believed to be long memory. The statistics are asymptotically standard normal on the null hypothesis that no bias is present, and the tests are consistent.
Are practitioners of "alternative" therapies competent to practise medicine? Should the Medical Council take action?
New Zealand Medical Journal 121(1284):102 (2008)
Bone formation markers in adults with mild osteogenesis imperfecta.
Clinical Chemistry 53(6):1109 (2007)
Plasma concentrations of procollagen peptides are decreased in osteogenesis imperfecta (OI), whereas other bone formation markers may be increased. We examined the utility of combining these markers in the diagnosis of OI in adults.
We measured plasma concentrations of procollagen-1 N-peptide (P...
The peroxisome proliferator-activated receptor-gamma agonist rosiglitazone decreases bone formation and bone mineral density in healthy postmenopausal women: a randomized, controlled trial.
Journal of Clinical Endocrinology & Metabolism 92(4):1305 (2007)
Thiazolidinediones, which are peroxisome proliferator-activated receptor-gamma agonists, are widely prescribed to patients with disorders characterized by insulin resistance. Preclinical studies suggest that peroxisome proliferator-activated receptor-gamma signaling negatively regulates bone for...
Cross-reactivity of Actrapid and three insulin analogues in the Abbott IMx insulin immunoassay.
Annals of Clinical Biochemistry 44(Pt 2):197 (2007)
Properties of volume-activated taurine efflux from human breast cancer cells.
Advances in Experimental Medicine and Biology 583:109 (2006)
Ayurvedic medicine: patients in peril from plumbism.
New Zealand Medical Journal 119(1233):U1958 (2006)
Heavy metals are commonly incorporated into Ayurvedic preparations as ashes or 'bhasmas'. A widely disseminated belief within Ayurvedic medicine is that these heavy metals can be valuable therapeutic components. Western toxicology refutes this contention. We report eight cases of lead poisoning ...
Recombinant osteoprotegerin for juvenile Paget's disease.
New England Journal of Medicine 353(9):918 (2005)
Juvenile Paget's disease, a genetic bone disease characterized by accelerated bone turnover, results from inactivating mutations in the gene encoding osteoprotegerin--a key regulator of osteoclastogenesis. The effects of recombinant osteoprotegerin were investigated in two adult siblings with ju...
An evaluation of the Abbott IMx sirolimus assay in relation to a high-performance liquid chromatography-ultraviolet method.
Annals of Clinical Biochemistry 42(Pt 5):394 (2005)
Sirolimus is an immunosuppressive agent used after organ transplantation. Monitoring its concentration is clinically relevant, but current methods of measurement using high-performance liquid chromatography (HPLC) are demanding. An immunoassay that uses readily available equipment offers a more ...
Chronic kidney disease and automatic reporting of estimated glomerular filtration rate: a position statement.
The Clinical biochemist. Reviews / Australian A... 26(3):81 (2005)
The systematic staging of chronic kidney disease (CKD) by glomerular filtration measurement and proteinuria has allowed the development of rational and appropriate management plans. One of the barriers to early detection of CKD is the lack of a precise, reliable and consistent measure of kidney ...
Forecasting Markov-switching dynamic, conditionally heteroscedastic processes
Statistics & Probability Letters 68(2):137 (2004)
Recursive formulae are derived for the multi-step point forecasts and forecast standard errors of Markov switching models with ARMA(∞,
q) dynamics (including the fractionally integrated case) and conditional heteroscedasticity in ARCH(∞) form. Hamilton's dynamic models of switching me...
Common bile duct transection in blunt abdominal trauma: case report emphasizing mechanism of injury and therapeutic management.
Journal of Trauma 54(4):781 (2003)