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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