Table 1.
Living participants by re-contact status and consent
| Contacted a (n = 1,820) | Status of consent b (n = 871) | |||||
|---|---|---|---|---|---|---|
| Yes | No | p-value | Given | Refused | p-value | |
| Study | <0.0001 | 0.76 | ||||
| FHS | 138 (48.6%) | 146 (51.4%) | 98 (90.7%) | 10 (9.3%) | ||
| WELD | 551 (73.3%) | 201 (26.7%) | 423 (88.7%) | 54 (11.3%) | ||
| INHALE | 456 (58.2%) | 328 (41.8%) | 252 (88.1%) | 34 (11.9%) | ||
| Sex | <0.0001 | 0.05 | ||||
| Male | 238 (48.5%) | 253 (51.5%) | 122 (84.1%) | 23 (15.9%) | ||
| Female | 907 (68.3%) | 422 (31.7%) | 651 (89.7%) | 75 (10.3%) | ||
| Age (years) | <0.0001 | 0.07 | ||||
| <49 | 229 (51.0%) | 220 (49.0%) | 163 (92.6%) | 13 (7.4%) | ||
| 50+ | 916 (66.8%) | 455 (33.2%) | 610 (87.8%) | 85 (12.2%) | ||
| Race | <0.0001 | 0.43 | ||||
| White | 578 (72.2%) | 223 (27.8%) | 448 (89.8%) | 51 (10.2%) | ||
| Black | 550 (55.6%) | 439 (44.4%) | 312 (87.2%) | 46 (12.9%) | ||
| Other | 17 (56.7%) | 13 (43.3%) | 13 (92.9%) | 1 (7.1%) | ||
| Status | 0.0009 | 0.48 | ||||
| Case | 362 (68.8%) | 164 (31.2%) | 248 (89.9%) | 28 (10.1%) | ||
| Control | 783 (60.5%) | 511 (39.5%) | 525 (88.2%) | 70 (11.8%) | ||
aExcludes 13 people for whom contact status was unclear/still pending.
bExcludes 274 people who were successfully contacted and verbally agreed but never sent back the form (n = 252), individuals who were contacted but too sick to give informed consent (n = 30), and n = 2 individuals who were deceased but had next of kin return a consent form.