To the best of our knowledge the composition of non-participating schools was not systematically different from participating schools since non-participating schools exhibited a similar geographical spread and deprivation profile to participating schools.
In the first instance, the patients could have been wrongly deemed eligible, or ineligible, and in the second instance, patients with specific characteristics could be systematically refusing to participate or dropping out, or conversely, patients with specific characteristics could be systematically agreeing to participate.
Health care personnel, patients, and their caregivers (defined as tutors, accompanying persons and visitors) were systematically invited to participate in the study.
All men who enrolled in the RCT between March 2004 and September 2005 were systematically invited to participate in the current study, which took place at a separate facility approximately 100 meters from the trial study site.
Only one eligible adult will be systematically selected to participate per household, according to the Kish grid [ 47] method (Table 2).
From this sampling frame, a cohort of 335 physicians was systematically selected to participate (equal-probability sampling interval of 9), with the assumption of a non-response or refusal rate of 20%.
Information was not systematically collected from participating mental health services on the generation and implementation of local action plans to tackle areas where practice fell short of the standard or the use of the bespoke change interventions.
Anonymized data on patients are systematically recorded by participating primary care physicians (PCPs) as part of their routine patient care and regularly delivered to THIN for use in research projects.
Finally, every working day during the study period, each eligible woman was systematically asked to participate in the survey and to provide signed informed consent to be sequentially enrolled.
The database contains data systematically collected from participating institutions electronic medical records and includes encounter data (emergency, outpatient, and inpatient), provider specialty, demographics (age, sex, and race), diagnoses and in-hospital procedures documented by ICD-9-CM codes, laboratory data, pharmacy data, in-hospital mortality, and hospital characteristics.
