A Handbook of Statistical Analysis Using Stata

The Effect of Nigella Sativa on Cardio-Metabolic Parameters: A Protocol for A Systematic Review and Meta-Analysis

Background: Among non-communicable diseases, cardiovascular diseases (CVDs) account for 44% of all deaths. Among natural alternatives, Nigella sativa (NS) exert beneficial effects on cardio-metabolic factors. This is the first systematic review and meta-analysis protocol aimed to identify all the findings relevant to the effects of NS on cardio-metabolic factors among adults. Methods: This stud...

A Handbook of Statistical Analysis Using R

Ordinal Regression Analysis: Fitting the Proportional Odds Model Using Stata, SAS and SPSS

Researchers have a variety of options when choosing statistical software packages that can perform ordinal logistic regression analyses. However, statistical software, such as Stata, SAS, and SPSS, may use different techniques to estimate the parameters. The purpose of this article is to (1) illustrate the use of Stata, SAS and SPSS to fit proportional odds models using educational data; and (2...

Fitting Stereotype Logistic Regression Models for Ordinal Response Variables in Educational Research (Stata)

The stereotype logistic (SL) model is an alternative to the proportional odds (PO) model for ordinal response variables when the proportional odds assumption is violated. This model seems to be underutilized. One major reason is the constraint of current statistical software packages. Statistical Package for the Social Sciences (SPSS) cannot perform the SL regression analysis, and SAS does not ...

The effects of azelnidipine and amlodipine in treatment of mild to moderate hypertension: a systematic review

Hypertension is an important risk factor for patients with cardiovascular disease. Long-acting calcium channel blockers are frequently used to treat patients with mild to moderate hypertension, among which azelnidipine and amlodipine are two dihydropyridine (DHP) type calcium channel blockers that are widely used in Japan and China. We offer a current evaluation and comparison of the efficacy a...