Table 1.

Select characteristics of the cases and controls

CasesControls
Women (n = 272)Men (n = 69)Women (n = 415)Men (n = 29)
Study, n (%)
 USRT182 (67)18 (26)415 (100)29 (100)
 MD Anderson Cancer Center90 (33)51 (74)00
Attained age, n (%)
 19–2523 (8)2 (3)30 (7)0
 26–3558 (21)15 (22)95 (23)5 (17)
 36–4589 (33)24 (35)142 (34)13 (45)
 46–5565 (24)11 (16)99 (24)6 (21)
 56–6529 (11)13 (19)43 (10)5 (17)
 66–798 (3)4 (6)6 (1)0
Smoking status, n (%)
 Never167 (62)38 (55)218 (53)12 (41)
 Former67 (25)20 (29)89 (22)10 (34)
 Current37 (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)
BMIa, 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)
  • aWeight in kilograms divided by height in meters squared.