the multivariate calibration method, partial least square regression (pls) was applied for thesimultaneous spectrophotometric determination of lidocaine (lid) and hydrocortisone acetate(hca) in their mixtures. the parameters of chemometric technique were optimized and theproposed method was validated with synthetic samples and applied to analyze these drugs inpharmaceutical products with good a...

Previous statistical studies have indicated that dichotomizing a continuous confounding variable in multivariate regression analyses can lead to biased estimation of the effect of exposures, treatments, and risk factors on outcomes. We suggest that, prior to entry in the multivariate analysis, one should test whether or not the continuous confounding variable is linearly related to log-odds of ...

We propose an efficient semiparametric estimator for the multivariate linear quantile regression model in which the conditional joint distribution of errors given regressors is unknown. The procedure can be used to estimate multiple conditional quantiles of the same regression relationship. The proposed estimator is asymptotically as efficient as if the conditional distribution were known. Simu...

cytomegalovirus (cmv) and rubella are considered as dangerous viral infections to the fetus. the findings of this research can clear the possible progress made thus far toward prevention in this part of the country. the data of all referees to genetic center of shahid beheshti hospital in hamadan, including the rubella and cmv tests were recorded in questionnaires and analyzed by logistic regre...

background: one of the significant processes concerning human resources is the organizational socialization of the recruited people through which new members get acquainted with values, norms and behavioral models and adapt themselves with the organizational culture. the present study evaluated the relationship between organizational socialization and commitment among nurses in shariati hospita...