| COPD* | Referent | p Value for comparison | |
| Entire COPD cohort (n = 1202) | |||
| Ever employed | 299 (99%) | 1194 (99%) | 0.55 |
| Currently employed | 595 (50%) | 190 (63%) | <0.0001 |
| VGDF exposure during longest held job | 697 (58%) | 117 (39%) | <0.0001 |
| JEM exposure probability | <0.0001 | ||
| Low | 817 (68%) | 250 (83%) | |
| Intermediate | 107 (9%) | 20 (7%) | |
| High | 278 (23%) | 32 (11%) | |
| GOLD stage II or higher (n = 742) | |||
| Ever employed | 737 (99%) | 1194 (99%) | 0.59 |
| Currently employed | 343 (46%) | 190 (63%) | <0.0001 |
| VGDF exposure during longest held job | 442 (60%) | 117 (39%) | <0.0001 |
| JEM exposure probability | <0.0001 | ||
| Low | 495 (67%) | 250 (83%) | |
| Intermediate | 70 (9%) | 20 (7%) | |
| High | 177 (24%) | 32 (11%) |
COPD, chronic obstructive pulmonary disease; GOLD, Global Obstructive Lung Disease initiative; JEM, job exposure matrix for exposure likelihood on longest held job; VGDF, vapours, gas, dust or fume on longest held job by self-report.
*First set of results are for the entire FLOW cohort of COPD subjects vs referents; second set of results (lower portion of table) are for ⩾GOLD stage II COPD vs referents.