We adhered to standard ethnographic methods to manage potential bias and to ensure that our data collection frame was open and wide, but it is possible that other observers might develop different conclusions.
The validity of aggregated data on alcohol consumption based on self-reports may be particularly biased in studies with short data-collection frames, and caution is required when data on alcohol consumption collected in a short time-frame are compared with other data.
However, to ensure heterogeneity in the participating patients the goal was to include 80 and 40 eligible patients during the planned data collection time frames of the two studies, respectively.
The social utility of mega-events, the concept of event-related legacy, and the operationalization of social impact and data collection time-frames for future studies are discussed.
A regression model based on measured data should be able to predict energy performance of a building for a given day as long as the weather conditions are similar to those during the data collection time frame.
Approximately one-fourth of the target population had comprehensive oral examination data available during the 5-year data collection time frame.
Studies were described according to the country of data collection, sampling frame, sample size, response rate, sex, age, the type of outcome and outcome ascertainment.
Further sensitivity analyses that restricted the analytical sample to only the 7,156 subjects who resided in the study area for ≥1 year during the data collection time frame yielded nearly identical results (data not shown).
The Delphi panel size of at least 8 respondents was in line with recommendations that the membership number be relevant to the purpose of the study, the selected design, and data collection time frame [ 12, 13].
Using convenience sampling [ 26], research personnel identified all potential participants presenting to the out-patient department of the hospital within the data collection time frame (January, May and June of 2009).
