Table 2.

Incidence rates of papillary thyroid cancer among whites of age 20 to 49 in the U.S. active duty military and U.S. general populations by year of diagnosis, sex, and other select characteristics, 1990–2004

1990–19971998–2004
CharacteristicPopulationCountRatea (95% CI)CountRatea (95% CI)IRRb (95% CI)
Women
AllMilitary (ACTUR)12413.31 (11.06–15.89)13719.64 (16.45–23.27)1.48 (1.14–1.90)
General population (SEER-9)3,9049.62 (9.25–9.99)5,09813.51 (13.05–13.98)1.40 (1.33–1.48)
Age
20–34Military (ACTUR)959.68 (7.83–11.84)7810.68 (8.42–13.38)1.10 (0.80. 1.51)
General population (SEER-9)1,6956.68 (6.35–7.04)1,8698.92 (8.50–9.36)1.33 (1.24–1.43)
35–49Military (ACTUR)293.62 (2.42–5.22)598.96 (6.80–11.57)2.47 (1.55–4.01)
General population (SEER-9)2,2092.93 (2.80–3.07)3,2294.59 (4.41–4.78)1.57 (1.47–1.67)
Stagec
LocalizedMilitary (ACTUR)9410.14 (8.19–12.44)9714.16 (11.46–17.30)1.40 (1.03–1.88)
General population (SEER-9)2,4215.56 (5.29–5.84)3,4268.59 (8.24–8.96)1.54 (1.45–1.65)
RegionalMilitary (ACTUR)252.64 (1.71–3.91)405.48 (3.90–7.51)2.08 (1.21–3.59)
General population (SEER-9)1,2593.45 (3.22–3.68)1,5514.55 (4.27–4.84)1.32 (1.20–1.45)
Sized, cm
≤2Military (ACTUR)727.77 (6.07–9.80)8812.77 (10.22–15.77)1.64 (1.18–2.28)
General population (SEER-9)2,3495.43 (5.17–5.71)3,3478.44 (8.08–8.80)1.55 (1.45–1.66)
>2Military (ACTUR)343.61 (2.50–5.08)456.28 (4.56–8.43)1.74 (1.07–2.81)
General population (SEER-9)1,0512.92 (2.72–3.14)1,3413.98 (3.72–4.25)1.48 (1.27–1.72)
Men
AllMilitary (ACTUR)2092.52 (2.19–2.89)1572.76 (2.34–3.22)1.09 (0.88–1.35)
General population (SEER-9)9922.08 (1.92–2.25)1,2772.83 (2.64–3.03)1.36 (1.22–1.51)
Age
20–34Military (ACTUR)1031.23 (1.00–1.49)751.42 (1.12–1.78)1.16 (0.84–1.57)
General population (SEER-9)3481.29 (1.15–1.44)3851.67 (1.50–1.86)1.30 (1.11–1.52)
35–49Military (ACTUR)1061.30 (1.06–1.57)821.34 (1.07–1.66)1.03 (0.76–1.39)
General population (SEER-9)6440.79 (0.72–0.87)8921.16 (1.07–1.25)1.46 (1.29–1.65)
Stagec
LocalizedMilitary (ACTUR)1311.58 (1.32–1.88)1081.88 (1.54–2.27)1.19 (0.91–1.55)
General population (SEER-9)4750.91 (0.81–1.02)6691.38 (1.25–1.52)1.52 (1.31–1.76)
RegionalMilitary (ACTUR)680.82 (0.64–1.04)450.80 (0.58–1.07)0.98 (0.65–1.44)
General population (SEER-9)4400.99 (0.88–1.11)5351.28 (1.14–1.42)1.29 (1.10–1.51)
Sized, cm
≤2Military (ACTUR)901.08 (0.87–1.33)751.30 (1.02–1.63)1.19 (0.86–1.64)
General population (SEER-9)4870.94 (0.84–1.05)6431.39 (1.25–1.53)1.48 (1.27–1.72)
>2Military (ACTUR)810.98 (0.78–1.22)691.23 (0.95–1.55)1.25 (0.89–1.75)
General population (SEER-9)3210.74 (0.64–0.84)4841.12 (0.99–1.25)1.51 (1.26–1.80)
  • aAge-adjusted (active duty military 1990–2004 and six 5-year age groups) rates per 100,000 person-years.

  • bIRR comparing rates in 1998–2004 to the rates in 1990–1997.

  • cMilitary: SEER Summary Stage; General population: SEER Historic Stage A; distant and unknown stages were not included (military, 19; general population, 495).

  • dUnknown size not included (military, 73; general population, 1,248).