Background— Clinic-based observational studies in men have reported that obstructive sleep
apnea is associated with an increased incidence of coronary heart disease. The objective …

Rationale: Although obstructive sleep apnea is associated with physiological perturbations
that increase risk of hypertension and are proatherogenic, it is uncertain whether sleep …

Objective: To describe the development and the performance of a brief questionnaire designed
to measure functional impairment caused by cataract (the VF-14). Design: Observational …

PURPOSE: As more and more youth utilize the Internet, concern about Internet harassment
and its consequences for adolescents is growing. This paper examines the potential overlap …

Objective To describe the time between treatment for choroidal melanoma and first diagnosis
of metastatic disease, sites of metastasis, treatments for metastasis, and time between …

Background Despite speculation that clinical information technologies will improve clinical
and financial outcomes, few studies have examined this relationship in a large number of …

• With the use of data published during the period from 1966 through 1988, a pooled analysis
(meta-analysis) of 5-year mortality rates among patients who had an eye enucleated for …

Background Intraventricular haemorrhage is a subtype of intracerebral haemorrhage, with
50% mortality and serious disability for survivors. We aimed to test whether attempting to …

OBJECTIVE: Evaluations of screening or diagnostic tests sometimes incorporate measures
of overall accuracy, diagnostic accuracy, or test efficiency. These terms refer to a single …

Rationale: The prevalence in cystic fibrosis (CF) of respiratory cultures with methicillin-resistant
Staphylococcus aureus (MRSA) has dramatically increased over the last 10 years, but …