Background: In the context of 2009 pandemic influenza (H1N1) virus infection (pandemic
H1N1 influenza), identifying correlates of the severity of disease is critical to guiding the …

Objective: To evaluate the direct and indirect influences of physical comorbidity, symptoms
of depression and anxiety, fatigue, and disability on health-related quality of life (HRQoL) in …

Objective: We aimed to compare survival in the multiple sclerosis (MS) population with a
matched cohort from the general population, and to evaluate the association of comorbidity with …

Background The objectives of this study were to determine rates of prenatal care utilization
in Winnipeg, Manitoba, Canada from 1991 to 2000; to compare two indices of prenatal care …

Province-wide population-based administrative health data from British Columbia (BC),
Canada (population: approximately 4.5 million) were used to estimate the incidence and …

Background While mental comorbidity is considered common in multiple sclerosis (MS), its
impact is poorly defined; methods are needed to support studies of mental comorbidity. We …

The authors' objective in this study was to determine geographic variations in the incidence
of inflammatory bowel disease (IBD), specifically Crohn's disease and ulcerative colitis, in …

Background: Despite the importance of comorbidity in multiple sclerosis (MS), methods for
comorbidity assessment in MS are poorly developed. Objective: We validated and applied …

Background Socioeconomic disparities in the use of prenatal care (PNC) exist even where
care is universally available and publicly funded. Few studies have sought the perspectives …

Objective: To determine the prevalence of comorbidity in the multiple sclerosis (MS) population
at the time of MS diagnosis. We also compared the prevalence of comorbidity in the MS …