Table 3 The cutoff point for the parameters that maximizes the sum of sensitivity and specificity

From: To use or not to use? Compulsive behavior and its role in smartphone addiction

  Diagnostic interview App-assisted diagnosis
  Cutoff point Sensitivity Specificity Cutoff point Sensitivity Specificity
Non-use frequency 58.5 count per day 0.710 0.604 67.4 count per day 0.750 0.686
Non-use duration 52618.8 s per day 0.608 0.786 54801.8 s per day 0.479 0.839
Non-use-median 404.4 s per day 0.725 0.643 415.9 s per day 0.667 0.613
RMSSD 3498.2 s per day 0.647 0.786 3783.5 s per day 0.521 0.774
Similarity Index 857.5 s per day 0.625 0.677 857.5 s per day 0.667 0.786
  1. Abbreviations: RMSSD, root mean square of the successive differences.