Predictor variable | Unstandardized coefficient β | Standard error | Standardization coefficient Beta | t | p |
(Constant) | 74.16 | 4.42 |
| 16.77 | 0.00 |
Place of residence | 0.70 | 0.87 | 0.08 | 0.80 | 0.42 |
Education level | −1.02 | 0.47 | −0.22 | −2.17 | 0.03 |
Occupation | 0.08 | 0.18 | 0.03 | 0.42 | 0.68 |
Monthly personal income | −1.38 | 0.42 | −0.32 | −3.3 | 0.00 |
Health status of main caregivers | 1.05 | 0.93 | 0.08 | 1.12 | 0.26 |
Smoking history | 4.25 | 2.02 | 0.26 | 2.10 | 0.04 |
Number of cigarettes smoked per day | −0.48 | 1.16 | −0.04 | −0.41 | 0.68 |
Years of smoking | −0.05 | 1.03 | −0.01 | −0.05 | 0.96 |
Postoperative treatment or not | 1.82 | 1.03 | 0.13 | 1.76 | 0.08 |