Table 5. Patients with ADCN according to their occupational exposure from studies included in the meta-analysis.
| First author, ref. no., year | Criteria selection | ADCN among those exposed to wood dust | ADCN with other | ||||
|---|---|---|---|---|---|---|---|
| Events | Controls | Total | Events | Controls | Total | ||
| d'Errico et al26, 2009 | OE: Information was collected regarding lifetime occupational exposure | 41 | 22 | 63 | 12 | 314 | 326 |
| Pukkala et al27, 2009 | 122 | 350627 | 350749 | 405 | 12538073 | 12538478 | |
| -Finland substudy | OE: Obtained from the national adaptations of the Nordic Occupational Classification | 6 | 101014 | 101020 | 54 | 3303726 | 3303780 |
| -Iceland substudy | OE: Obtained and converted from the International Standard Classification of Occupations from 1968 (ISCO-68) | 1 | 1537 | 1538 | 1 | 119456 | 119457 |
| -Norway substudy | OE: Obtained from the national adaptations of the Nordic Occupational Classification | 27 | 82333 | 82360 | 123 | 2480191 | 2480314 |
| -Sweden substudy | OE: Obtained from the national adaptations of the Nordic Occupational Classification | 88 | 165743 | 165831 | 227 | 6634700 | 6634927 |
| Luce et al35, 2002 | OE: Detailed information on occupational history was collected in all studies, including job description and years of employment for each job held | 118 | 555 | 673 | 77 | 2581 | 2658 |
| Roush et al43, 1980 | OE: Obtained from death certificates and directories from occupational information | 2 | 13 | 15 | 17 | 846 | 863 |
| Cecchi et al44, 1980 | OE: Occupational history data | 3 | 2 | 5 | 8 | 20 | 28 |
ADCN: Adenocarcinoma.; OE: occupational exposure.