Multivariable logistic regression of factors associated with self-perceived medical errors
| Variables | Odds ratio (95% CI) | P value |
| Age* | 0.79 (0.73 to 0.86) | <0.0001 |
| Sex (ref=male) | ||
| Female | 0.70 (0.64 to 0.78) | <0.0001 |
| Education level (ref=associate degree or vocational diploma) | ||
| Bachelor degree | 1.17 (1.04 to 1.34) | 0.0125 |
| Master degree or higher | 1.56 (1.29 to 1.88) | <0.0001 |
| Self-perceived physical health (ref=good) | ||
| Fair | 1.40 (1.21 to 1.61) | <0.0001 |
| Bad | 1.61 (1.37 to 1.89) | <0.0001 |
| The level of hospital (ref=primary hospital and others) | ||
| Secondary hospital | 1.17 (1.05 to 1.31) | 0.0051 |
| Tertiary hospital | 1.22 (1.09 to 1.38) | 0.0009 |
| Job title (ref=resident) | ||
| Physician-in-charge | 1.12 (1.00 to 1.24) | 0.0446 |
| Chief physician | 1.31 (1.10 to 1.56) | 0.0023 |
| Shortage of physicians (ref=no) | ||
| Yes | 1.12 (1.01 to 1.24) | 0.0337 |
| Workplace verbal aggression (times) (ref=no) | ||
| 1~3 | 1.66 (1.45 to 1.90) | <0.0001 |
| 4~6 | 2.08 (1.78 to 2.44) | <0.0001 |
| 7~ | 2.33 (2.00 to 2.70) | <0.0001 |
| Effort-reward imbalance (ref=no) | ||
| Yes | 1.04 (0.92 to 1.17) | 0.5595 |
| Overcommitment† | 1.12 (1.06 to 1.18) | <0.0001 |
| Depressive symptoms (ref=no) | ||
| Yes | 1.05 (0.95 to 1.17) | 0.3532 |
| Negative affect† | 1.41 (1.34 to 1.49) | <0.0001 |
| Satisfaction with job† | 0.96 (0.91 to 1.02) | 0.1676 |
| Self-efficacy† | 0.81 (0.77 to 0.85) | <0.0001 |
*This result meant each 10-year increase in the physicians’ age was associated with a 21% reduction in the odds of a self-reported error in the previous 3 months.
†These results showed the association between each 1-point change of continuous variables and the odds of self-reported medical errors in the previous 3 months.