A goodness of fit χ 2 test evaluates the degree to which an observed discrete distribution over one dimension differs from another. A typical application of this test is to consider whether a specialisation of a set, i.e. a subset, differs in its distribution from a starting point (Wallis forthcoming). Like the chi-square test for homogeneity (2 × 2 or generalised row r × column c test), the nu...

Tsushima, T., Sasaki, N., lmai, Y., Matsuzaki, F. & Friesen, H. G. Wallis, M. (1981) in Cellular Receptors for Hormones and (1980) Biochem. J . 187,479-492 Neurotransmitters (Schulster, D. & Levitski, A., eds.), pp 163-183. Wallis, M. (1975) Biol. Rev. 50, 35-98 Wiley, Chichester Wallis, M. (1978) in Chemistry and Biochemistry of Amino Acids, Wallis, M., Surowy, T. K., Daniels, M., Hartree, A. ...

PURPOSE To evaluate the clinical performance of a silicone hydrogel (Si-Hy) soft contact lens (CL) in combination with three different multipurpose disinfecting solutions (MPDSs). METHODS This was a prospective, randomized, single-masked, crossover, and comparative study in which 31 habitual soft CL wearers were randomly assigned to one of the three MPDSs (Synergi, COMPLETE RevitaLens, and OP...

Background The aim of this in vitro study was to evaluate the color stability of CAD/CAM Zirconia ceramics following exposure to acidic drink (Coca Cola) and after exposure to staining solution (coffee). Material and Methods All the samples were immersed in different staining solutions over a 28-day test period. A colorimetric evaluation according to the CIE L*a*b* system was performed by a b...

Methods Clinical trial of a consecutive sample of 26 JIA (ILAR) patients of the Oligoarticular (46,2%), Polyarticular (23,1%) and Systemic (30,7)% subtypes, with an average 11,2±4,1 years of age. The patients participated in a standard physiotherapy program twice a week for 6 months. The Chi-square test has been used in order to evaluate the attendance to the program. The HRQL has been assessed...

The aim of this investigation was to determine, compare and evaluate three different computerized tracing programs, where the lateral cephalograms were digitized on the screen. 39 randomly selected cephalometric radiographs were used in the present study. Three programs Planmeca Romexis® (Romexis 3.2.0., Helsinki, Finland), Orthalis (France) and AxCeph (A.C 2.3.0.74, Ljubljana, Slovenia) were e...