In this work, we show that Spearman’s correlation coefficient test about H0:ρs=0 found in most statistical software is theoretically incorrect and performs poorly when bivariate normality assumptions are not met or the sample size small. There common misconception tests ρs=0 robust to deviations from normality. However, under certain scenarios violation of assumption has severe effects on type ...

Reconstruction of broken fragments is an extremely difficult task, mainly due to the high probability of missing pieces and the likelihood of erosion. This process is tedious and requires many hours to complete even for the experienced archaeologist. This paper describes some of the most successful fragment reconstruction algorithms and presents a new technique for reassembly. The technique rel...

Objective: The aim of present study was to find the effect of cholesterol level on platelet aggregability in normal individuals. Methodology: This study was conducted in Cardiology department, Lady Reading Hospital, Peshawar in SeptemberOctober 2007. Normal individuals aged 18 years or above were randomly included. Patients who were suffering from any cardiovascular or other diseases were exclu...

introduction: the nursing staff, compared to other professions, have less healthy work environment and always face a lot of job stress. the quality of the relationship between nurses and physicians has a significant impact on nurses. thus, the aim of the present study was to determine the correlation between job stress for nurses with professional communication between nurses and physicians. ma...

the present study was conducted to determine the association between social support and health-related qol (hrql) for a sample of 120 patients living with hiv/aids in tehran.eighty male and 40 female living with hiv referred to iranian aids research center at imam khomini hospital in tehran, iran in 2011 were randomly selected for assessment. data was collected by means of vaux's social support...

The Pearson correlation coefficient, ρ (rho), is a popular statistic for describing the strength of the relationship between two variables. It is the slope of the regression line between two variables when both variables have been standardized by subtracting their means and dividing by their standard deviations. The correlation ranges between plus and minus one. The population correlation ρ is ...

introduction. one of the proplems that both medical students and educational programmers are involved in is the importance of basic science materials in comprehention of clinical subjects and student's performance after that. our goal is to measure the correlation coefficient between the cbse and cpse and the predictive validity of cbse for cpie. methods. analytic cross-sectional study was...

OBJECTIVE To transculturally adapt the Spanish version of Pregnancy Physical Activity Questionnaire (PPAQ) analyzing its psychometric properties. METHODS The PPAQ was transculturally adapted into Spanish. Test-retest reliability was evaluated in a subsample of 109 pregnant women. The validity was evaluated in a sample of 208 pregnant women who answered the questionnaire and wore the multi-sen...