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. 2018 Oct 19;20(10):e267. doi: 10.2196/jmir.9058

Table 4.

Proportion of variance explained.

Predictors R2 (%)

Psychological well-being Quality of sleep Work-related stress Productivity
Time effect (T1-T2) 11.9 9.7 7.1 3.3
Time effect with demographics 12.8 9.8 7.4 3.9
Time effect with modules 12.6 10.2 7.6 4.1
Time effect with features 13.5 10.4 7.9 4.4
Time effect with text topics 12.6 10.0 7.4 4.3
All variables 14.6 10.4 8.5 5.5

aPsychological well-being, quality of sleep, reduced work stress, productivity.