Figure 2

Baseline associations between nighttime smartphone use and mental health. All estimates are adjusted for age, gender, personality (neuroticism and extroversion), co-habitation, social network score. *P-value from F-test. Mean differences denotes the estimated mean difference from the reference group (0 Nights) on a scale ranging from 0 to 10. Error bars corresponds to a 95% confidence interval for the estimated mean difference.