(A) Ratio of FISH doses vs TLD doses | |||||
---|---|---|---|---|---|
FISH dose/TLD dose* | HR radiation workers | Total | p Value† | OR (95% CI) | |
CBC-HR | TLD-HR | ||||
≥5 | 25 | 57 | 82 | <0.001 | 8.772 (2.510 to 30.655) |
<5 | 3 | 60 | 63 | ||
Total | 28 | 117 | 145 |
(B) Annual FISH doses from working duration | |||||
---|---|---|---|---|---|
Annual FISH dose‡ | HR radiation workers | Total | p Value† | OR (95% CI) | |
CBC-HR | TLD-HR | ||||
≥50 mGy | 10 | 17 | 27 | 0.010 | 3.268 (1.291 to 8.270) |
<50 mGy | 18 | 100 | 118 | ||
Total | 28 | 117 | 145 |
*Ratio of FISH doses to TLD doses ≥5 means ‘high-risk’ radiation workers because they had lower frequency of TLD-wearing during working periods.
†Significant difference between the groups as determined by Pearson's χ2 test.
‡Annual FISH doses ≥50 mGy means ‘high-risk’ radiation workers because they were exposed by IR during working periods.
CBC-HR, complete blood cell count-high risk; IR, ionising radiation; FISH, fluorescence in situ hybridisation; TLD-HR, thermoluminescent dosimeter-high risk.