PURPOSE The growing competitiveness between various health centres in the scope of offered medical services is accompanied by growth of patients' expectations concerning the quality of the abovementioned services. That is why knowledge of the patients' needs and expectations concerning medical services may significantly contribute to the improvement in the quality of the services to be rendered...

The dominance of Jamaican sprinters in international meets remains largely unexplained. Proposed explanations include demographics and favorable physiological characteristics. The aim of this study was to analyze the demographic characteristics of world class Jamaican sprinters. Questionnaires administered to 120 members of the Jamaican national team and 125 controls elicited information on pla...

Objectives To assess levels of burnout in medical students, and to explore the influence of extracurricular activities on burnout at a medical school in Saudi Arabia. Methods This cross-sectional study was conducted with first to fourth year medical students at King Saud bin Abdulaziz University for Health Sciences (KSAU-HS) in Riyadh, Saudi Arabia. Socio-demographic, burnout level (the Masla...

BACKGROUND The Second China National Sample Survey on Disability in 2006 showed that the participation rate of disabled Chinese rural individuals in social medical insurance participation was less than 30%. However, there has been limited number of studies on the influencing factors, especially contextual factors, affecting their participation in social medical insurance. Therefore, this study ...

AIMS AND BACKGROUND The increasingly older population confronts oncologists with an imposing challenge: older cancer patients have specific healthcare needs both independent of and associated with the diagnosis of cancer. The aim of the present study is to examine whether elderly versus younger cancer patients have different needs with respect to attendance, treatment and information. METHODS...

OBJECTIVE To evaluate suicide seasonality in the city of São Paulo within an urban area and tropical zone. METHOD Suicides were evaluated using the chi-square test and analysis of variance (ANOVA) by comparing monthly, quarterly and half-yearly variations, differentiating by gender. Analyses of time series were carried out using the autocorrelation function and periodogram, while the signific...

BACKGROUND This retrospective cross-sectional study aimed to investigate the relationship between Chinese medicine (CM) dietary patterns (hot, neutral, and cold) and the incidence of breast cancer among Chinese women in Hong Kong. METHODS Breast cancer cases (n = 202) and healthy controls (n = 202) were matched according to demographics. Chinese women residing in Hong Kong for the past 7 year...

10.1 The Chi-square Goodness of Fit Test. The general area of nonparametric statistical inference deals with statistical procedures such as hypothesis testing, point estimation and confidence intervals in problems where the parent distribution has no known functional form. For one reason or another, the chi-square goodness of fit test is considered to be in this area, and so we present it here....

The proper use of Karl Pearson's chi-square for the analysis of contingency tables is reviewed. The 1949 article by Lewis and Burke, who cited nine sources of error in the use of chi-square, is updated. Research on the application of the chi-square statistic is examined and supplementary and alternative approaches are discussed. Emphasis is placed on techniques that are of use to the practicing...

We introduce two methods for approximation to distribution of weighted sum of chi-square random variables. These methods can be more useful than the known methods in literature to transform chi-square type chance constrained programming (CCP) problem into deterministic problem. Therefore, these are compared with Sengupta (1970)’s method. Some examples are illustrated for the purpose of comparin...