| Variables | Mean of factors | Bivariate analysis |
| Age | 54.58 (16.43) | 0.07(P) |
| Sex |
| -5.45***(T) |
| Male | 11.67 (1.85) |
|
| Female | 14.48 (1.77) |
|
| Occupation |
| 0.72(A) |
| Farmers | 13.47 (2.20) |
|
| Officers | 13.09 (2.51) |
|
| Retiree | 13.83 (1.90) |
|
| Others | 12.38 (2.27) |
|
| Educational level |
| 1.44(A) |
| Primary | 12.71 (2.36) |
|
| Secondary | 13.86 (2.38) |
|
| High school | 12.70 (2.32) |
|
| College, bachelor | 14.22 (1.64) |
|
| Preoperative pain | 2.92 (1.21) | 0.30*(P) |
| Fear of surgical procedure |
| 18.29***(A) |
| None | 10.50 (2.52) |
|
| Little | 11.89 (1.60) |
|
| Average | 13.71 (1.44) |
|
| Multiple | 15.50 (1.40) |
|