Sociodemographic characteristics of participants (n=11 couples)
| Characteristic | Wife | Husband |
| Age (years) | Mean: 25.8 Range: 22–30 | Mean: 28.4 Range: 25–34 |
| Education level | Senior high: 1 (9%) Technical college: 2 (18%) Undergraduate: 8 (73%) | Postgraduate: 2 (18%) Technical college: 1 (9%) Undergraduate: 8 (73%) |
| Employment | Office worker: 5 (45%) Business owner: 3 (27%) Factory worker: 1 (9%) Teacher: 1 (9%) Coach: 1 (9%) | Office worker: 5 (45%) Public servant: 3 (27%) Business owner: 3 (27%) Police officer: 1 (9%) |
| Annual household income (yuan RMB) | <100 000: 1 (9%) 100 000–200 000: 7 (64%) >200 000: 3 (27%) | <100 000: 1 (9%) 100 000–200 000: 7 (64%) >200 000: 3 (27%) |