title: Applicational possibilities of linear and non-linear (polynomial) regressions and analysis of variance: kinetics of chloramphenicol.
abstract: The dependance of the content and microbiological activity of Chloramphenicol (active substance) at dissolution on time and on pH, as well as that of the content and microbiological activity of Chloramphenicol (250 mg capsules) at release, on time, in in-vitro conditions, was determined using linear and non-linear (polynomial and generalized dilution) regressions. Based on the square error value, the dependance of the content and microbiological activity of Chloramphenicol (active substance) at dissolution on time and different pH values, as well as the dependance of the content and microbiological activity of Chloramphenicol (capsules) at release on time were best described by polynomial function. The comparison of the content and microbiological activity of Chloramphenicol (active substance) at dissolution at different pH values, as well as of Chloramphenicol (capsules) at release showed the significant correlation between these parameters (r = 0.999, P << 0.001). The comparision of the content, on one hand, and microbiological activity of Chloramphenicol (active substance), on the other, at dissolution at different pH values, as a function of time, was done using a modified method of one-way analysis of variance for linear regression comparisons. Based on the value of Fischer's coefficient (F), there is a statistically very significant difference between the contents and between the microbiological activities of chloramphenicol (active substance) at dissolution and different pH as a function of time (P << 0.005).
authors.affiliation: Pharmaceutical Factory GALENIKA a.d., Quality Control Center: Dept. Biological Control, Beograd-Zemun, Yugoslavia.
authors.forename: M B
authors.initials: MB
authors.lastname: Arambasić
authors.forename: D
authors.initials: D
authors.lastname: Ristanović
authors.forename: A
authors.initials: A
authors.lastname: Djordjević
mesh_terms: D000465:Algorithms; D000704:Analysis of Variance; D000900:Anti-Bacterial Agents / Q000493:pharmacokinetics* / Q000494:pharmacology; D002214:Capsules; D002701:Chloramphenicol / Q000493:pharmacokinetics* / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D016014:Linear Models; D017711:Nonlinear Dynamics; D012044:Regression Analysis; D012984:Software
chemical_list: D000900:Anti-Bacterial Agents; D002214:Capsules; D002701:Chloramphenicol