PURPOSE To determine the optimal dosage of cyclopentolate for adequate cycloplegia with minimal side effects. METHODS A prospective randomized clinical trial of patients 3.5 to 20 years of age referred to a strabismus clinic during a 1-year period. Eligible patients were randomly divided into three groups. In Group 1, the cycloplegic effect of one drop of cyclopentolate was compared with two ...

This study examines the individual and workplace factors related to depression and stress in a large privately owned enterprise in China. The cross-sectional study design involved 13 privately owned retail enterprises in China. A self-report survey was administered to 4,847 employees aged 18-54 recruited through the management boards of the 13 enterprises. A chi-square test was used to compare ...

This paper proposes a new method of improved meta analysis to combine relative risk for both homogeneous and heterogeneous set of studies. The standard meta analyses don’t give any conclusive result when the effects of heterogenous studies are combined. The proposed improved meta analysis uses the predicted relative risk, and chi-square test to check the heterogeneity of the effects. Confidence...

BACKGROUND Internet is an important source of up-to-date dental information for delivering educational materials. The aim of this study was to determine the use of internet among dental students in Yazd. METHODS In this descriptive study, a questionnaire consisting of multiple choice questions was distri-buted to clinical undergraduate students studying at the School of Dentistry at the Shahi...

BACKGROUND In a previous study, we showed that unprofessional behavior in medical school was associated with subsequent disciplinary action. This study expands on that work by identifying the domains of unprofessional behavior that are most problematic. METHOD In this retrospective case-control study, negative comments were extracted from student files for 68 case (disciplined) and 196 matche...

CONTEXT AND OBJECTIVE the adequacy of blood depends on blood donation rates and numbers of blood donors. To prepare adequate blood supplies, it is essential to investigate the barriers and factors that stop individuals from donating. This study aimed to identify the causes of lapsed donation at our center. DESIGN AND SETTING cross-sectional study of volunteer blood donors in Shiraz, Iran. M...

PURPOSE Many patients presenting with headache also complain of constipation; the relationship between these two symptoms has not been explored in detail. The aim of this study was to investigate the association between primary headache and constipation. METHODS This retrospective study included all children who attended the Inje University Sanggye Paik Hospital complaining of headache, and w...

AIM Identify the experience of dental caries among adolescents associated to work, self-care, social life and access to healthcare services. MATERIALS AND METHODS This cross-sectional study was carried out with 60 adolescents aged 15 and 16 years in a city in southeastern Brazil. The data were collected through a structured interview and clinical exam for dental caries carried out by a single...

We propose a nonparametric association analysis combining both family and unrelated case-control genotype data. Under the assumption of Hardy-Weinberg equilibrium, we formed an affected group to compare with a group of unaffecteds.Comparison with traditional case-control chi-square test and transmission-disequilibrium test shows that this new approach has noticeably improved power. All analysis...

BACKGROUND Many argue that prohibition creates more troubles than alternative policies, but fewer than half of American voters support a taxed and regulated market for cannabis. Some oppose a regulated market because of concerns about driving after smoking cannabis. Although a roadside sobriety test for impairment exists, few voters know about it. The widespread use of a roadside sobriety test ...