TABLE 6-3 Association of Selected Characteristics of Military Service in Vietnam with Hodgkin’s Disease in the Selected Cancers Study, 1984–1988

Characteristic

Controls (n = 1,776)

Hodgkin’s Disease Cases (n = 1,157)

OR (95% CI)

Corps in Vietnam

 

 

 

I

18.9% (23)

25.9% (7)

1.67 (0.67–4.18)

II

24.6% (30)

11.1% (3)

0.52 (0.15–1.81)

III

32.8% (40)

33.3% (9)

1.25 (0.57–2.75)

IV

3.3% (4)

3.7% (1)

0.93 (0.09–9.82)

Navy, Blue Water

20.5% (25)

25.9% (7)

1.39 (0.56–3.48)

Unknown

— (11)

— (1)

Land v. sea duty in Vietnam

 

 

 

All land-based men

81.2% (108)

75.0% (21)

1.08 (0.64–1.82)

All branches other than Navy

76.7% (102)

75.0% (21)

1.18 (0.70–2.00)

Navy, shore

3.0% (4)

Navy, Brown Water

1.5% (2)

Navy, Blue Water

18.8% (25)

25.0% (7)

1.41 (0.57–3.50)

SOURCE: CDC, 1990c.

Navy, the OR was 1.09 (95% CI 0.93–1.28). For both outcomes, neither service in Vietnam in general nor service in the Navy in Vietnam conferred a higher risk. Results were not confounded by age, year of hospitalization, race, or education. Results do not support any association between NHL or Hodgkin’s disease and surrogates of Agent Orange exposure in Vietnam veterans.

The use of hospital-ascertained cases and controls may limit the generalizability of results to all Vietnam veterans (those hospitalized are different from other veterans) and introduce bias (exposed cases are more likely to be hospitalized than controls). It was also not possible to determine whether controls were hospitalized for diseases related to service in Vietnam.



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