In the year 1985, the first cases of Aids were diagnosed in Navarra. Since then and until December 2002, according to the notifications received, 2,329 persons with HIV have been counted, of whom 1,538 were from Navarra and 791 temporary residents in this autonomous community. In recent years, the incidence of new diagnoses of HIV infection and cases of Aids has shown a clear tendency to fall i...

AIM This study describes the long term follow up of haemophilic patients infected with hepatitis C virus (HCV) between 1961 and 1985. METHODS Clinical and treatment records from 310 patients with inherited coagulation disorders treated with blood product before 1985 were reviewed. Standard survival analysis methods were used to model progression to liver failure and death. RESULTS A total o...

BACKGROUND Improvements in socioeconomic conditions and population health have been linked to declining age at menarche. In China, secular trends in age at menarche following extensive economic reform during recent decades have not been thoroughly investigated. This study examined the overall trend in age at menarche and assessed differences in the rate of change of age at menarche over time, a...

BACKGROUND Assessing the accuracy of influenza epidemic periods determined by statistical models is important to improve the performance of algorithms used in real-time syndromic surveillance systems. This is a difficult problem to address in the absence of a reliable gold standard. The objective of this study is to establish an expert-based determination of the start and the end of influenza e...

BACKGROUND AND PURPOSE Some studies suggest that the incidence of stroke may continue to change. We examined recent temporal trends in a defined geographical area of southern Sweden. METHODS Medical records at the University Hospital of Lund (hospital district population 224 126 in 1993) were retrospectively screened for possible first-ever strokes during 1993 to 1995. Included patients were ...

Tandem computer systems are designed to be single-fault tolerant. This paper takes a census of customer system outages reported to Tandem. The census shows a clear improvement in the reliability of hardware and maintenance. It indicates that now (1989) software is the majority source of reported system outages (62%), followed by system operations (15%). This is a dramatic shift from the statist...

BACKGROUND The Minnesota Heart Survey is a population-based study designed to monitor and explain trends in cardiovascular mortality, morbidity, and risk factors. As part of this effort, a 50% sample of patients hospitalized for myocardial infarction (MI) in the seven-county Twin Cities (Minneapolis and St. Paul) metropolitan area was reviewed in 1970, 1980, and 1985. Those with a validated def...

It is well documented that occupational stress causes health problems (Cooper and Marshall, 1976; Cooper and Smith, 1985; Harrison, 1985; Jenkins, 1971; Quick and Quick, 1984). in several work contexts, research findings have demonstrated a positive relationship between stress and angina, ulcers, and hypertension and a negative relationship between stress and job satisfaction (House et al., 197...