TABLE 1.
COMPARISON OF DEMOGRAPHIC CHARACTERISTICS AMONG SUBJECTS WITH CHRONIC BERYLLIUM DISEASE, SUBJECTS WITH BERYLLIUM SENSITIZATION, AND CONTROL SUBJECTS
| Total | Control Subjects | BeS | CBD | ||
|---|---|---|---|---|---|
| (n = 386) | (n = 255) | (n = 70) | (n = 61) | P Value | |
| Median age, yr (range)* | 67 (41–89) | 67 (41–89) | 65 (45–84) | 65 (49–86) | |
| Sex, n (%)† | |||||
| Male | 341 (88.3%) | 230 (90.2%) | 55 (78.6%) | 56 (91.8%) | |
| Female | 45 (11.7%) | 25 (9.8%)‡ | 15 (21.4%)‡,§ | 5 (8.2%)§ | 0.009,‡ 0.036§ |
| Race, n (%)† | |||||
| White | 377 (97.7%) | 252 (98.8%) | 68 (97.1%) | 57 (93.4%) | |
| African American | 9 (2.3%) | 3 (1.2%)‖ | 2 (2.9%) | 4 (6.6%)§ | 0.028§ |
| Ethnicity, n (%)† | |||||
| Hispanic | 24 (6.2%) | 11 (4.3%)‡ | 8 (11.4%)‡ | 5 (8.2%) | 0.039‡ |
| Non-Hispanic | 362 (93.8%) | 244 (95.7%) | 62 (88.6%) | 56 (91.8%) | |
| Smoking status, n (%)† | |||||
| Current | 23 (6.0%) | 13 (5.1%)‡ | 8 (11.4%)‡,§ | 2 (3.3%)§ | 0.094,‡ 0.104§ |
| Former | 203 (52.6%) | 135 (52.9%) | 34 (48.6%) | 34 (55.7%) | |
| Never | 160 (41.4%) | 107 (42.0%) | 28 (40.0%) | 25 (41.0%) | |
| Year of hire, median (range)* | 1969 (1952–1998) | 1968 (1952–1993) | 1972 (1952–1998) | 1969 (1952–1990) | |
| Years at facility, median (range)* | 15.0 (0.2–40.7) | 15.8 (0.2–40.7)‡ | 12.6 (0.5–33.7)‡ | 16.8 (1.0–40.0) | 0.020‡ |
Definition of abbreviations: BeS = beryllium sensitization; CBD = chronic beryllium disease.
*
Compared using Kruskal-Wallis test followed by pair-wise Mann-Whitney tests when significant.
†
Compared using chi-square or Fisher's exact method.
‡
Comparison between BeS and control subjects.
§
Comparison between BeS and CBD.
‖
Comparison between CBD and control subjects.