Table 1 The App-generated parameters in this study

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

Smartphone use parameters Smartphone non-use parameters
Smartphone use epoch: an epoch as a smartphone use that starts from screen-on and ends at screen-off. Smartphone non-use epoch: in contrast to smartphone use epoch, an epoch as a smartphone non-use that starts from screen-off and ends at screen-on.
 Use-frequency: the daily epoch count of smartphone use.  Non-use frequency: the daily epoch count of smartphone non-use.
 Use-duration: The total daily epoch time of smartphone use.  Non-use duration: the total daily epoch time of smartphone non-use.
 Use-median: The median duration per epoch per day.  Non-use-median: the median duration per non-use epoch per day.
Use/non-use reciprocity  
 Root mean square of the successive differences (RMSSD): root mean square of the differences between the adjacent duration of use and non-use epochs
 Similarity Index: differences between the duration of one non-use epoch and the corresponding three successive use epochs