Notes: Beta weights are from final regression equation with all blocks of variables in the model. Variables coded, or recoded, as follows: gender (0=female, 1=male); motivations of mobile Phone use ranged from 1 (strongly disagree) to 5 (strongly agree); General mobile phone use ranged from 1 (never) to 4 (often). Smart phone ownership (0 = no, 1 = yes).
| Independent variables | Group Involvement | Leisure Activity | ||||
| Total | Shanghai | Taipei | Total | Shanghai | Taipei | |
| Block 1: Demographics | ||||||
| Gender | -.06** | -.01 | -.07 | .07** | .06 | .09** |
| Age | -.03 | .04 | -.04 | -.04 | .06 | -.08** |
| Smart phone ownership | -.02 | -.08* | .01 | -.01 | .00 | .01 |
| Adjusted R2 | 0.7% | 0.1% | 1.6% | 0.3% | 0.1% | 1.3% |
| Block 2: Media use | ||||||
| Television use | -.01 | .03 | -.02 | .04 | .00 | .04 |
| Radio use | -.01 | -.03 | -.01 | .06* | .10** | .03 |
| Newspaper use | .01* | .00 | .01 | -.00 | -.05 | .01 |
| Internet use | -.04* | -.05 | .04 | -.01 | -.06 | .04 |
| Incremental adjusted R2 | -0.3% | 0.0% | 0.0% | 0.8% | 1.6% | 0.4% |
| Block 3: Mobile phone use | ||||||
| Calling | .01 | .01 | .02 | .02 | .04 | -.05 |
| Texting | -.02 | .02 | -.07 | -.05 | -.06 | .03 |
| Incremental adjusted R2 | 0.1% | 0.0% | 0.1% | 0.0% | 0.0% | 0.0% |
| Block 4: General Mobile phone use | ||||||
| Interactive use | -.01 | 01.- | -.06 | -.06 | .07 | -.07 |
| Personal use | .04* | *11. | .06 | .04 | -.01 | .02 |
| Incremental adjusted R2 | 2.5% | 6.1% | 1.9% | 0.6% | 2.6% | 0.1% |
| Block 5: Social network size | ||||||
| Social network size | ***09. | .26*** | .03 | .08** | .17*** | .06 |
| Incremental adjusted R2 | 2.6% | 7.0% | 0.8% | 0.9% | 3.9% | 0.5% |
| Block 6: Motivation of mobile phone use | ||||||
| Entertainment/relaxation | .06** | .01 | .06 | .20*** | .15*** | |
| Surveillance | -.01 | .08 | -.00 | -.02 | .06 | .01 |
| Social interaction | .05** | -.09 | .12*** | .01 | .01 | -.04 |
| Communication | .19*** | .24*** | .15*** | -.01 | -.07 | .01 |
| Incremental adjusted R2 | 4.9% | 5.0% 4.9% | 4.9% | 2.4% | 2.9% | 1.5% |
| Total adjusted R2 | 10.6% | 18.7% | 8.3% | 5.0% | 11.7% | 3.8% |
| N | 1,772 | 671 | 1,101 | 1,772 | 675 1,097 | 1,772 |