In some cases, the estimators obtained in compound tests have better features than the traditional ones, obtained from individual tests, cf. Sobel and Elashoff (1975), Garner et al. (1989) and Loyer (1983). The bias, the efficiency and the robustness of these estimators are investigated in several papers, e.g. Chen and Swallow (1990), Hung and Swallow (1999) and Lancaster and Keller-McNulty (19...

background abnormalities of external genitalia in male children nurseries and inguinal hernia are the most common congenital disorders in children. we aimed to determine prevalence rate of inguinal hernia and other genital among children nurseries, in shahrood-iran. materials and methods in this descriptive cross-sectional study, we examined 920 children nurseries boys. physical examination of ...

OBJECTIVES To determine the prevalence of self-reported herpes zoster (HZ) disease and vaccination in a geriatric population and to characterize the deciding factors to receive the HZ vaccine. METHODS This was a cross-sectional survey of patients older than age 60 years at 3 university-based primary care clinics in the southeastern United States. Participants provided information for age, rac...

BACKGROUND The endocrine adrenal gland has 3 zones comprised of the cortex and medulla. The character of multi-hormonal expression results in multiple clinical manifestations. To define the clinical characteristics of adrenal tumors in Taiwan, we reviewed 336 pathologically proven adrenal tumors at Chang Gung Memorial Hospital in Linkou. METHODS We retrospectively analyzed 258 pathologically ...

background : ligulae intestinalis is a parasitic cestode, which has the economic-health importance in fishery industries. the aim of this study was to determine the prevalence of this parasite in mazandaran. the effects of habitat temperature and kind of pool (sandy-cement) were considered as well. methods : in this study, 103 fish samples were obtained in all stages; the samples (male and fema...

We explore the rate-dependent dynamic response of periodically paced bullfrog (Rana catesbeiana) cardiac muscle. Alternans (2:2 behavior) occur in 35% of animals and 2:1 $ 1:1 bistability in 74% of animals. In addition, we observe 2:2 $ 2:1 bistablility. We discuss the implications of these results for two map-based models of cardiac dynamics. The high prevalence of bistability suggests that th...

feline herpesvirus 1 (fehv-1) and feline calicivirus (fcv), associated with upper respiratory tract disease, are highly prevalent in cats worldwide. with the aim of investigating the importance of fehv-1 in a population of cats, samples were taken in a hospital in ahvaz, south-west iran, between june 2007 and june 2008. oropharyngeal, nasal and ocular swabs were collected from 65 domestic cats,...

introduction: based on the serious complications which are followed, hypertension is a common and asymptomatic health problem. this study aims to present a general statistics of the rate of the prevalence of systolic and diastolic hypertension in iranian men and women based on the age range through the systematic review and meta-analysis method. materials and methods: in this study of systemati...

Background: Bladder cancer is the 10th most common cancer worldwide. We aimed to assess the prevalence of bladder cancer in the Kerman Province, in southeast Iran. Materials and Methods: In this cross-sectional study, we used data on 1272 patients with bladder cancer registered in the Kerman population-based cancer registry from 2014 to 2017. There were two parts of data including observed dat...

INTRODUCTION We investigated sampling methods being used to estimate the HIV prevalence rate among female commercial sex workers. METHODS The studies were classified according to the adequacy or not of the sample size to estimate HIV prevalence rate and according to the sampling method (probabilistic or convenience). RESULTS We identified 75 studies that estimated the HIV prevalence rate am...