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Table 2 Study flow chart

From: Daylight photodynamic therapy versus cryosurgery for the treatment and prophylaxis of actinic keratoses of the face − protocol of a multicenter, prospective, randomized, controlled, two-armed study

Time - 4 weeks
– 0 d+
d 0+ 3 months after V1# 3 months after V2# 6 months after V3# 6 months after V4# 6 months after V5#
Visit Screening 1 2 3 4 5 6
Study treatment
Test-group: Fullface-Daylight-PDT
  1.PDT 2.PDT 3.PDT 4.PDT 5.PDT  
Study treatment
Control-group: cryosurgery
  Cryo Cryo° Cryo° Cryo° Cryo°  
Documentation of AK lesions in the face   X X X X X X
Randomization X       
Obtaining Informed Consent X       
Check of Inclusion/ Exclusion Criteria X X X X X X X
Medical history X       
Photodocumentation   X X X X X X
Assessment of photoaging parameters   X X X X X X
Documentation of newly occurred malignant skin tumors in the face   X X X X X X
Documentation of AEs and SAEs   X X X X X X
Pain score (VAS) during treatment   X X X X X  
Skin-related quality of Life (DLQI) X       X
Patient satisfaction with cosmetic results    X X X X X
Investigator satisfaction with cosmetic results    X X X X X
Local skin reactions   X X X X X  
Pregnancy test X X X X X X  
  1. +: Screening and Visit 1 may take place on the same day
  2. # +/− 4 weeks
  3. Cryo: Cryosurgery
  4. ° cryosurgery in the case of uncleared or newly developed AK lesions