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Table 1 Mean scores, distribution and floor and ceiling effects, by rater and subscale

From: Development and validation of the Italian version of the Mobile Application Rating Scale and its generalisability to apps targeting primary prevention

Scale

Skewness

Mean (SD)

Floor effect, %

Ceiling effect, %

Rater 1

Rater 2

Rater 1

Rater 2

Rater 1

Rater 2

Rater 1

Rater 2

Engagement

0.39

0.17

2.87 (0.87)

2.96 (0.79)

0

0

2.3

0

Functionality

−0.28

−0.87

4.10 (0.67)

4.15 (0.80)

0

0

18.6

18.6

Aesthetics

−0.67

−0.56

3.34 (0.99)

3.34 (0.94)

7.0

4.7

4.7

2.3

Informationa

−0.64

−0.34

3.49 (0.80)

3.48 (0.72)

0

0

0

0

MARS total score

−0.36

−0.34

3.45 (0.66)

3.48 (0.66)

0

0

0

0

Subjective quality

0.39

0.51

2.49 (1.17)

2.31 (0.99)

7.0

14.0

2.3

0

  1. a Item 19 was excluded from all calculations because of lack of ratings