Selecting RRs for the meta-analyses All meta-analyses are restricted to records with available RR and CI values
The convenience factor is not always on your side at the cigarette store, and tobacco products are not readily available if you want to buy cigarettes online
Adjustment for misclassification would be difficult, as denial rates are likely to vary by aspects of the study design, the way questions are asked, and also by sex, age, location and other demographic variables
Moreover, strange little paths winding between houses in a seemingly pointless way may, in fact, be descendants of ancient field paths which, for fear of opposition or out of regard for local usage, were never closed or diverted
They concluded the high rates of illness and death among the factory workers could be attributed to heavy asbestos exposure