48 Five population based studies assessed the relation between volume of white matter hyperintensities and global cognitive decline (see web extra table 3).
INTERGENE is a population-based study assessing the interplay between genetic susceptibility, environmental factors, lifestyle and psychosocial background as risk factors for chronic diseases and cardiovascular disease.
The CoLaus study is a population-based study assessing the clinical, biological and genetic determinants of cardiovascular disease in the city of Lausanne, Switzerland [ 11].
Relative risk of incident PE and DVT according to SLE status This is the first population-based study assessing the risk of PE and DVT in patients with SLE.
Our findings compare favorably with a recent population-based study assessing the risk of cardiotoxicities in association with trastuzumab with/without anthracyclines in 47,806 women aged ≥65 years with breast cancer diagnosed between 1998 and 2005 [ 21].
In a pioneering population-based study assessing the relationship between community-level measures of IPV and unintended pregnancies among Colombian women, Pallito and O'Campo found that the odds of having an unintended pregnancy were higher in settings with high levels of patriarchal control and high rates of IPV [ 22].
An a priori power analysis was conducted to detect the sample size that is necessary to find statistically significant exercise effects [ 93] based on a study assessing the effects of balance training on postural control in older adults [ 94].
Based on studies assessing the association between PA and metabolic risk, it seems logical that young people should be encouraged to replace some sedentary time with light physical activity and then proceed to moderate-intensity activities.
Many governments have made commitments to examine inequalities in healthcare access based on studies assessing the association between several socio-demographic factors and late initiation or fewer prenatal examinations.
Most of the psychooncological literature is based on studies assessing the prevalence of mental disorders (categorical approach) (Derogatis, 1993; Härter et al, 2001), quality-of-life studies (Spilker, 1990; Cella et al, 1993), or studies using global or specific distress questionnaires (dimensional approach) (Zabora et al, 2001; Herschbach et al, 2004a; Bultz and Carlson, 2006).
