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. 2009 Mar;2(3):44–50.

Table 5.

Subjects’ evaluation of instructions and use of the blue light device (N=21)

MEAN* SD
   Understanding of the blue light Skincare System 4.38 0.59
   Understanding warnings in given information 4.28 0.56
   Understanding precautions in given information 4.19 0.60
   Confident about use of device without a doctor 4.43 0.50
   Use of the blue light device is easy 4.14 0.57
   Daily use of TC is easy for me 4.19 0.51
   Once-per-day use of TC is easy for me 4.29 0.56
   Twice-per-day use of the device is easy for me 3.76 0.89
   Expectation of performing the blue light treatment correctly 4.38 0.59
   Self treatment is positive because of control 4.33 0.48
   The outcome will be positive 3.90 0.62
   Tända Clear is medically effective and safe 4.10 0.54
   Satisfaction with the way TC has to be applied 4.14 0.57
   TC is safe for self treatment 4.05 0.50
   The blue light treatment will improve the facial skin condition 4.00 0.70
   Satisfaction with current treatment 3.10 1.17
   Result with TC Skincare System is better than my current treatment 3.95 0.67
   General impression of the blue light device and treatment 4.14 0.57

Score range = from 1 to 5 (1=strongly disagree, 2=disagree, 3=neutral, 4=agree, 5=strongly agree)

*

= mean score (on a scale of 1 to 5)