| Items | Control group (n = 57) | Observation group (n = 58) | χ2 | P |
| Gender |
|
| 0.080 | 0.778 |
| male | 27 (47.4) | 29 (50) |
|
|
| female | 30 (52.6) | 29 (50) |
|
|
| Age/year |
|
|
|
|
| <40 | 30 (52.6) | 20 (34.5) | 4.134 | 0.127 |
| 40 - 65 | 24 (42.1) | 32 (55.2) |
|
|
| >65 | 3 (5.3) | 6 (10.3) |
|
|
| Education degree |
|
| 5.327 | 0.070 |
| Primary School or Below | 9 (15.8) | 20 (34.5) |
|
|
| Middle school or technical secondary school | 24 (42.1) | 19 (32.8) |
|
|
| College degree or above | 24 (42.1) | 19 (32.8) |
|
|