The only area-based study to examine a spectrum of ages found that life expectancy differentials increased over time between the least and most deprived areas of the US for all ages in both sexes, yet were smallest for the population 70 years and over [ 11].
A case-control study was performed as part of a hospital-based study to examine the impact of psychiatric and psychosocial problems on migraine.
Recently, Yang (2012) conducted a questionnaire-based study to examine test takers' strategies in relation to their performance on graph writing tasks.
To our knowledge, this is the first large, population-based study to examine the association between ADRB2 Arg16Gly polymorphism, lung function, beta-agonist use, and mortality.
We observed no differences in survival by genotype among black or white subjects not reporting beta-agonist use at visit 2. To our knowledge, this is the first large, population-based study to examine the association between ADRB2 Arg16Gly polymorphism, beta-agonist use, lung function, and mortality.
To our knowledge this is the first population-based study to examine survival from small intestinal tumours separately by morphology, subsite and socio-economic deprivation.
To our knowledge, this is the first population-based study to examine thoughts of death and suicidal feelings in extreme old age.
This is the first large, community-based study to examine risk of very preterm birth in relation to mercury levels among women with low to moderate exposure.
This is the first US-based study to examine the prevalence of RI among patients with bone metastases from solid tumors.
We conducted this population-based study to examine the current incidence rate of ILDs and temporal changes in incidence rate between 1995 and 2005.
