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. 2013 Sep 11;2(2):e35. doi: 10.2196/resprot.2416

Table 3.

Phase I prototype evaluation: interface and usability results (n=20).

Game evaluation Scale n (%) Mean (SD)
User interface



How easy or difficult was it to figure out how to play? 1=Very difficult 0 (0) 3.55 (0.89)


2=Difficult 2 (10)


3=Neutral 8 (40)


4=Easy 7 (35)


5=Very easy 3 (15)

How easy or difficult was it to understand the instructions? 1=Very difficult 1 (5) 3.70 (1.13)


2=Difficult 2 (10)


3=Neutral 4 (20)


4=Easy 8 (40)


5=Very easy 5 (25)

How easy or difficult was it to see the on-screen text? 1=Very difficult 0 (0) 4.65 (0.59)


2=Difficult 0 (0)


3=Neutral 1 (5)


4=Easy 5 (25)


5=Very easy 14 (70)

How easy or difficult was it to know what you were supposed to do? 1=Very difficult 2 (10) 3.00 (1.08)


2=Difficult 4 (20)


3=Neutral 7 (35)


4=Easy 6 (30)


5=Very easy 1 (5)

How easy or difficult was it to know whether you were doing well? 1=Very difficult 1 (5) 3.65 (1.04)


2=Difficult 1 (5)


3=Neutral 6 (30)


4=Easy 8 (40)


5=Very easy 4 (20)

How comfortable or frustrated did you feel interacting with the game? 1=Very frustrating 0 (0) 3.85 (1.14)


2= Frustrating 4 (20)


3=Neutral 2 (10)


4= Comfortable 7 (35)


5=Very Comfortable 7 (35)

How would you rate the professionalism or production value of the game? 1= Poor 2 (10) 3.95 (1.23)


2=Somewhat poor 0 (0)


3=Moderate 3 (15)


4=Good 7 (35)


5=Very good 8 (40)
Usability



Summary score 0-25 0 (0) 67.00 (14.81)


26-50 2 (10)


51-75 12 (60)


76-100 6 (30)