Table 3.
Change in body dosemeter measurements over time by speciality.
| Speciality | Year term | Ratio (95% CI)a | P -value | ||
|---|---|---|---|---|---|
| Analysis 1 (entire dataset) | Analysis 2 (excluding 0 mSv readings) | Analysis 1 (entire dataset) | Analysis 2 (excluding 0 mSv readings) | ||
| Radiology |
Linear term | 0.88 (0.86, 0.91) | 0.69 (0.62, 0.77) | <0.01 | <0.001 |
| Squared term | 0.98 (0.97, 0.99) | 0.93 (0.87, 0.99) | |||
| Cubic term | 1.02 (1.01, 1.03) | - | |||
| Cardiology | Linear term | 0.91 (0.88, 0.94) | 0.53 (0.43, 0.66) | <0.01 | <0.001 |
| Squared term | 1.02 (1.00, 1.03) | 1.27 (1.13, 1.42) | |||
| Cubic term | 1.01 (1.00, 1.02) | 1.08 (1.02, 1.15) | |||
| Surgeon/ Anaesthetist |
Linear term | 0.84 (0.78, 0.91) | 0.60 (0.46, 0.79) | <0.01 | 0.001 |
| Squared term | 0.97 (0.97, 1.00) | 0.84 (0.70, 1.00) | |||
| Cubic term | 1.02 (1.00, 1.04) | - | |||
a
As the analysis was performed on a log scale, the regression coefficients have been converted to ratios, which are presented along with corresponding confidence intervals and represent the relative change in radiation per 5 year increase in time.