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Table 2 Methods for self-assessment of skin oil

From: Patient experiences with oily skin: The qualitative development of content for two new patient reported outcome questionnaires

  Total Sample (N = 54) US Sample (N = 28) German Sample (N = 26)
Touch Assessment (Rub-Stroke) % (n)    
Simple stroke 52% (28) 21% (6) 85% (22)
Number of strokes/rubs 39% (21) 18% (5) 62% (16)
Examining oil on fingers after touching 35% (19) 43% (12) 27% (7)
Pressure of stroke 31% (17) 32% (9) 31% (8)
Rubbing index finger and thumb 31% (17) 36% (10) 27% (7)
Visual Assessment % (n)    
Reflection in mirror 83% (45) 78% (22) 88% (23)
Location of mirror placement (Bathroom) 42% (23) 36% (10) 50% (13)
Blotting (and visual inspection of blot) 42% (23) 54% (15) 31% (8)
# of dabs before inspection 31% (17) 21% (6) 42% (11)
Frequency of self examination    
- 1 – 5 times per day 28% (15) 32% (9) 23% (6)
- 6 – 10 times per day 26% (14) 18% (5) 35% (9)
Type of blotting material % (n)    
- Tissue/Toilet paper 61% (33) 36% (10) 88% (23)
- Cleansing Tissues 30% (16) 7% (2) 54% (14)
- Paper towel 26% (14) 11% (3) 42% (11)
Skin Sensations (non-touch) % (n) 24% (13) 36% (10) 12% (3)