Table II.
RRs of cancer incidence by type of CAs (All tumours - ICD IX 140–208)
| Type of CA | Subjects | Cases | Person-years | RR | 95% CI |
| Total CAs | |||||
| Lowa | 6399 | 152 | 63 210 | 1 | — |
| Medium | 7456 | 240 | 71 956 | 1.31 | 1.07–1.60 |
| High | 6438 | 283 | 70 463 | 1.41 | 1.16–1.72 |
| Chromatid-type aberrations | |||||
| Lowa | 6026 | 185 | 60 523 | 1 | — |
| Medium | 7146 | 226 | 69 696 | 1.10 | 0.90–1.35 |
| High | 6870 | 252 | 72 106 | 1.12 | 0.92–1.36 |
| Chromosome-type aberrations | |||||
| Lowa | 8521 | 195 | 84 273 | 1 | — |
| Medium | 5366 | 207 | 55 311 | 1.29 | 1.05–1.59 |
| High | 6150 | 261 | 62 702 | 1.42 | 1.17–1.71 |
| Dicentric chromosomes | |||||
| Noa | 7288 | 253 | 78 632 | 1 | — |
| Yes | 976 | 52 | 10 432 | 1.32 | 0.96–1.80 |
| Ring chromosomes | |||||
| Noa | 7542 | 255 | 78 058 | 1 | — |
| Yes | 188 | 20 | 1941 | 2.22 | 1.34–3.68 |
| Chromatid exchanges | |||||
| Noa | 4621 | 158 | 51 466 | 1 | — |
| Yes | 498 | 25 | 5550 | 1.30 | 0.83–2.01 |
| Marker chromosomes | |||||
| Noa | 4849 | 163 | 53 121 | 1 | — |
| Yes | 270 | 20 | 3895 | 1.39 | 0.84–2.30 |
ICD, International Classification of Diseases.
RRs were adjusted for country, gender, age, time since test, job exposure and smoking habit.
a
Reference category.