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Table 1 Relevant global screening factors identified for the MACUSTAR study in qualitative evaluation ordered by estimated magnitude of impact on screening numbers

From: Challenges, facilitators and barriers to screening study participants in early disease stages-experience from the MACUSTAR study

Screening measures Factors prioritized in qualitative interviews* Other factors
All sites Change of inclusion criteria (opening for individuals with unilateral intermediate disease) (#8) Dissemination material (patient flyer, referral letter, study procedure flyers, sample visit schedules)
Increase of participant travel expenses reimbursement (#3) Distribution of study newsletter
Investigator teleconferences (#6)  
Investigator meetings (conferences) (#7) Letter of appreciation for clinical sites at recruitment start
Increase of study newsletter frequency (monthly to biweekly) (#4) Implementation of a clinical site questionnaire to identify unsolved issues
Regular coordination teleconferences with the project management and monitors (#5)  
Single sites   Pre-screening lists
  Individual contacts with investigators (e-mail, phone, in person)
  Individual contacts with site coordinators
  Appearing in the newsletter as a “top recruiter”
Interacting factors Public holiday (#2) Competitive recruitment
Reaching a high proportion of the initial “recruitment target” or exceeding this target (#9) Communication of recruiting problems by individual sites
Successive initiation of screening activity (#1) Problems with study devices at individual sites
Consortium core membership (#10)  
  1. * only global factors that could be assigned to specific time periods were allowed
  2. Factors preceded by a # sign were considered relevant in the qualitative evaluation and are displayed in the ranking order obtained in the qualitative evaluation