The technical setup of this scenario is similar to the second scenario, but the data collection is not performed for clinical purposes and will in many cases be acquired by entities established especially for the data collection of the population study. .
Detailed information on the study population and data collection of the EPIC study has been described elsewhere[15].
Detailed information on the study population and data collection of the EPIC study has been described elsewhere [14].
A detailed description of the study population and data collection of the Prospect-EPIC study has been published elsewhere [ 21].
The MDC is a population-based data collection of all births in NSW.
Detailed descriptions of study design, population, and baseline data collection of the cohort can be found elsewhere (Haftenberger et al, 2002; Riboli et al, 2002).
Descriptions of study design, population and baseline data collection of the cohort (Riboli et al, 2002) and this nested case control study (Ose et al, 2014) have been reported in detail.
Quality and relevance were assessed using the following domains: the research focus; caregiver status (bereaved/current); relationship to cared-for person; methods of data collection; population; country of origin; theoretical framework and key findings.
All the 18 studies included were briefly described regarding important characteristics, including 'type of physical exercise intervention, comparator, length of intervention, data collection, study population, country, setting, year(s) of the study, study design, type of economic evaluation'and key economic findings.
The differences in the incidence rates may be due to variations in the definition of colic and of differences in study design, method of data collection and population size between different studies [ 6, 7].
