We hypothesized that catheter material has a greater influence on stiffness than does cross-sectional shape.
First, although our use of change scores permitted a more rigorous exploration of mediation than do cross-sectional data, our study variables were measured concurrently at each time point which precluded an examination of temporal associations between variables [ 34].
Practice staff were trained in anthropometry to do the cross sectional survey.
We did a cross sectional study of 1105 general acute hospitals 488 in 12 European countries (Belgium, England, Finland, Germany, Greece, Ireland, Netherlands, Norway, Poland, Spain, Sweden, and Switzerland), and 617 in California, Pennsylvania, Florida, and New Jersey in the US.
Although investigating change over time provides more robust evidence than does a simple cross sectional analysis, 27 this type of ecological analysis has several limitations.
Some of the studies done before are cross –sectional with the recall history of as long as five year/s back.
We did a cross-sectional survey of 104 patients, then gave a questionnaire to the final study group of 716868%), a year or more later.
Mann et al (Mann et al. 2010) did a cross-sectional telephone survey of adults in Ontario, Canada aged 18 and older.
We did a cross-sectional study nested within the data collection system for a concurrent trial.
We did a cross-sectional qualitative study of 3 sub-counties in Katakwi district and 1 in Amuria in Uganda between March and May 2009.
We did a cross-sectional study of the characteristics of effective teachers from their own perspective across medicine and dentistry disciplines.
