| variables | Abbreviations | Coding categories |
| Dependent variables |
|
|
| work while studying | WWS | 1 = working while studying and 0 = otherwise |
| Independent variables |
|
|
| Age | YEAR | a continuous variable |
| Financial needs | FN | 1 if the international student has enough money to respond to financial needs and 0 otherwise |
| Tutor work pattern | TWP | 1 if a tutor participates in the labour market and 0 otherwise |
| Tutor income | TI | a continuous variable |
| Practicing Chinese | PC | 1 if the international student speaks Chinese and 0 otherwise |
| Develop relationship | DR | 1 if the international student developed relationships and 0 otherwise |
| Gain experience | GE | 1 if the international student gain experience and 0 otherwise |
| Student earning | SE | 1 if a salary is attractive 0 otherwise |
| Children | CHI | 1 if the international student has children in China or in origin country and 0 otherwise |