Demographic and cumulative lead exposure distributions for participants with glioma, glioblastoma multiforme, meningioma, and controls in the National Cancer Institute Adult Brain Tumor Study
| Characteristics | Glioma (n = 362) | Glioblastoma multiforme* (n = 176) | Meningioma (n = 134) | Controls (n = 494) | ||||
|---|---|---|---|---|---|---|---|---|
| Sex, n (%) | ||||||||
| Male | 198 (55) | 92 (52) | 30 (22) | 227 (46) | ||||
| Female | 164 (45) | 84 (48) | 104 (78) | 267 (54) | ||||
| Age at interview, n (%) | ||||||||
| 18-29 | 41 (11) | 3 (2) | 1 (1) | 55 (11) | ||||
| 30-49 | 137 (38) | 37 (21) | 53 (40) | 209 (42) | ||||
| 50-69 | 121 (33) | 83 (47) | 57 (43) | 171 (35) | ||||
| 70-90 | 63 (17) | 53 (30) | 23 (18) | 59 (12) | ||||
| Hospital site, n (%) | ||||||||
| Phoenix, AZ | 160 (44) | 70 (40) | 58 (43) | 229 (46) | ||||
| Boston, MA | 133 (37) | 63 (36) | 65 (49) | 181 (37) | ||||
| Pittsburgh, PA | 69 (19) | 43 (24) | 11 (8) | 84 (17) | ||||
| Cumulative lead exposure (μg/m3 y), n (%) | ||||||||
| 0 | 201 (56) | 92 (52) | 93 (69) | 281 (57) | ||||
| >0-150 | 102 (28) | 45 (26) | 24 (18) | 149 (30) | ||||
| >150-300 | 19 (5) | 10 (6) | 5 (4) | 29 (6) | ||||
| >300-450 | 10 (3) | 6 (2) | 3 (2) | 14 (3) | ||||
| >450-600 | 3 (1) | 2 (1) | 2 (2) | 3 (1) | ||||
| >600 | 12 (3) | 10 (6) | 5 (4) | 15 (3) | ||||
| Unknown | 15 (4) | 11 (6) | 2 (2) | 3 (1) | ||||
↵* Cases with glioblastoma multiforme are a subset of the cases with glioma.