Table 1.
Select characteristics of the cases and controls
| Cases | Controls | |||
|---|---|---|---|---|
| Women (n=272) | Men (n=69) | Women (n=415) | Men (n=29) | |
|
| ||||
| Study, n (%) | ||||
| U.S. Radiologic Technologists | 182 (67) | 18 (26) | 415 (100) | 29 (100) |
| M. D. Anderson Cancer Center | 90 (33) | 51 (74) | 0 | 0 |
| Attained age, n (%) | ||||
| 19–25 | 23 (8) | 2 (3) | 30 (7) | 0 |
| 26–35 | 58 (21) | 15 (22) | 95 (23) | 5 (17) |
| 36–45 | 89 (33) | 24 (35) | 142 (34) | 13 (45) |
| 46–55 | 65 (24) | 11 (16) | 99 (24) | 6 (21) |
| 56–65 | 29 (11) | 13 (19) | 43 (10) | 5 (17) |
| 66–79 | 8 (3) | 4 (6) | 6 (1) | 0 |
| Smoking status, n (%) | ||||
| Never | 167 (62) | 38 (55) | 218 (53) | 12 (41) |
| Former | 67 (25) | 20 (29) | 89 (22) | 10 (34) |
| Current | 37 (14) | 11 (16) | 104 (25) | 7 (24) |
| Family history of thyroid cancer, n (%) | 13 (4.8) | 4 (5.8) | 5 (1.2) | 1 (3.5) |
| Body mass index (BMI)a, median (interquartile range) | 23.9 (21.1–28.3) | 28.8 (25.6–32.6) | 23.2 (21.0–25.8) | 25.0 (23.1–27.5) |
a
Weight in kilograms divided by height in meters squared