While additional socio-demographic factors such as education, household income, and marital status were not directly stratified, the large sample size and random stratified sampling method employed ensures that these factors are indirectly represented
And a lot of European and contemporary [brands], rather than an abundance of moderate American brands
Some studies and reviews have found links between frequent relighting and higher risk of chronic bronchitis and possibly lung cancer, though this work is still emerging and complex (confounding factors exist relighters often have heavier dependence and different demographic profiles)
You have been by my side, and my brothers', for more than 40 years through thick and thin, ups and down, joys and sorrows." 1979: Switzer in spring In this 1979 photo, Switzer and his team prepare to start spring drills on Owen Field