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Table 2 Primary and secondary endpoints, data sources and evaluation methods

From: Improving cooperation between general practitioners and dermatologists via telemedicine: study protocol of the cluster-randomized controlled TeleDerm study

Secondary endpoints (intervention group) Primary endpoint (both groups)
Patients GPs Dermatologists GP team staff Teledermatology software/KSYOS (process evaluation) Routine data
Care provider/customer satisfaction, description of technical processes with their advantages and disadvantages • Number of teleconsultations
• Time until dermatologist answers
• Number of physical referral recommendations
• Number of queries by dermatologists after teleconsultation
• Type of disease treated by teleconsultation
• Duration of complete teleconsultation process
• Result of dermatologic consultation
• Number of referrals to dermatologists by GPs
• Ambulatory dermatologic diagnoses
• Ambulatory patient contacts with GPs and/or dermatologists due to skin conditions (including EBMa keys)
• Number of clinic referrals due to skin conditions
• Quality of life (DLQI, questionnaire)
• Satisfaction with dermatologic care/telemedicine (questionnaire, interviews)
Appraisal of feasibility, practicability and barriers for implementation (interviews)
• Number of reports by dermatologists after consultation (KSYOS and GP PMS)
• Time until dermatologist report completed (PMS)
• Recommendation of physical referrals by teledermatologists  
  1. DLQI Dermatology Life Quality Index, EBM Einheitlicher Bewertungsmaßstab, GP general practitioner, KSYOS teledermatology system, PMS patient management software
  2. aPhysician’s fee table used to encode what kind of procedure is performed in an outpatient setting and how much money will be paid for it; data are transferred from a practice to the Kassenärztliche Vereinigung and then generate a defined amount of income for the physician