Introduction: Rheumatoid Arthritis (RA) can get a considerable impact on patients’ quality of life. Path analysis is an exact statistical method for determining the best causative model of variables. So, the aim of this paper is application of regression based path analysis for introduction of the best model of RA quality of life determinants, using Precede Model constructs. Methods: Thi...

‎Latent class analysis (LCA) is a method of evaluating non sampling errors‎, ‎especially measurement error in categorical data‎. ‎Biemer (2011) introduced four latent class modeling approaches‎: ‎probability model parameterization‎, ‎log linear model‎, ‎modified path model‎, ‎and graphical model using path diagrams‎. ‎These models are interchangeable‎. ‎Latent class probability models express l...

The present research was performed to Design the Marital Adjustment Model with due attention to Islamic life Style and Perfectionism in High School Teachers in Birjand. The method of research was non experimental and structural equation Modeling (SEM). A sample of 300 teachers from Birjand city was selected through random cluster sampling (150 male and 150 female). The tools included: Locke-Wal...

This research is a survey and exploratory study to present a conceptual model for the sustainable development of Iran based on social entrepreneurship. Its approach for conceptual modeling is based on Path Analysis through Multiple Regression Method. The study has benefited from five questionnaires (four for the Delphi Method’s rounds and another for the conceptual modeling itself). The statist...

abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...