Table 3.
Multiple and univariate logistic regression to determine predictors of BSE
| Variable name | Category | Crude OR (95%CI) | P | Adjusted OR (95%CI) | P |
|---|---|---|---|---|---|
| Age (year) | 20-29 | 1 (reference) | - | 1 (reference) | - |
| 30-39 | 1.25 (1.31-1.61) | <0.0001 | 1.16 (1.06-1.27) | <0.0001* | |
| 40-49 | 1.31 (1.20-1.44) | <0.0001 | 1.18 (1.06-1.33) | 0.003* | |
| 50-59 | 1.02 (0.90-1.15) | 0.689 | 0.88 (0.71-1.09) | 0.280 | |
| 60-69 | 0.87 (0.73-1.05) | 0.712 | 0.77 (0.57-1.02) | 0.074 | |
| Marital status | Single | 1 (reference) | - | 1 (reference) | - |
| Married | 0.80 (0.64-1.00) | 0.054 | 0.63 (0.43-0.91) | 0.016* | |
| Divorce | 0.71 (0.54-0.94) | 0.014 | 0.61 (0.41-0.91) | 0.017* | |
| Educational level | Illiterate | 1 (reference) | - | 1 (reference) | - |
| High school | 1.14 (1.03-1.27) | 0.011 | 0.98 (0.86-1.11) | 0.790 | |
| Diploma and higher | 1.19 (1.07-1.33) | 0.001 | 1.13 (0.97-1.35) | 0.095 | |
| History hormonotherapy | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 1.25 (1.17-1.33) | <0.0001 | 1.23 (1.1 5-1.33) | <0.0001* | |
| The age of the first marriage (year) | <30 years | 1 (reference) | - | 1 (reference) | - |
| >=30 years | 0.77 (0.60-0.98) | 0.034 | 0.85 (0.65-1.1 0) | 0.227 | |
| History of other cancer | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 1.4 4 (1.21-1.72) | <0.0001 | 1.17 (0.97-1.42) | 0.103 | |
| First-degree relatives with BC | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 12.32 (8.66-17.52) | <0.0001 | 14.22 (9.83-20.57) | <0.0001* | |
| second-degree relatives with BC | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 10.94 (9.03-13.25) | <0.0001 | 11.65 (9.57-14.18) | <0.0001* | |
| history of benign breast disease | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 14.45 (11.15-18.73) | <0.0001 | 11.96 (9.04-15.82) | <0.0001* | |
| History of biopsy | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 10.48 (6.65-16.50) | <0.0001 | 1.16 (0.63-2.12) | 0.630 | |
| Previous BC surgery | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 14.94 (9.38-23.18) | <0.0001 | 2.85 (1.58-5.00) | <0.0001* | |
| History of chemotherapy | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 12.71 (3.79-42.64) | <0.0001 | 1.81 (0.27-12.16) | 0.539 | |
| History of doing pap-smear | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 1.48 (1.35-1.62) | <0.0001 | 1.29 (1.16-1.43) | <0.0001* | |
| Physical activity | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 1.44 (1.35-1.54) | <0.0001 | 1.58 (1.47-1.69) | <0.0001* | |
| History of smoking | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 0.63 (0.44-0.89) | 0.010 | 0.65 (0.45-0.95) | 0.029* | |
| Formerly | 0.29 (0.12-0.68) | 0.005 | 0.21 (0.08-0.54) | 0.001* | |
| History of stress | No | 1 (reference) | - | 1 (reference) | - |
| Yes | 1.09 (0.98-1.22) | 0.097 | 0.97 (0.85-1.10) | 0.662 |
*0.05 level of statistical significant