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Table 4 Standardised Mortality Ratios (SMR) by period of follow-up for Vietnam War regular Navy and Air Force veterans

From: Changes over time in the "healthy soldier effect"

Follow-up

0-9 years

10-19 years

20-29 years

30+ years

 

O*

E†

SMR 95% CI

O

E

SMR 95% CI

O

E

SMR 95% CI

O

E

SMR 95% CI

All deaths

291

364.8

0.80 (0.71, 0.89)

456

521.5

0.87 (0.80, 0.96)

922

893.9

1.03 (0.97, 1.10)

452

451.1

1.00 (0.91, 1.10)

Cancers

44

49.0

0.90 (0.67, 1.21)

129

131.1

0.98 (0.83, 1.17)

385

314.5

1.22 (1.11, 1.35)

185

181.1

1.02 (0.88, 1.18)

Lung cancer

9

8.3

1.09 (0.57, 2.09)

44

32.7

1.35 (1.00, 1.81)

107

80.3

1.33 (1.10, 1.71)

51

45.0

1.13 (0.86, 1.49)

Colorectal cancer

8

5.3

1.51 (0.75, 3.01)

13

17.2

0.76 (0.44, 1.30)

54

43.1

1.25 (0.96, 1.63)

24

24.7

0.97 (0.65, 1.45)

Circulatory diseases

44

77.9

0.57 (0.42, 0.76)

144

177.3

0.81 (0.69, 0.96)

298

307.6

0.97 (0.86, 1.09)

144

149.1

0.97 (0.82, 1.14)

Ischemic heart disease

23

51.2

0.45 (0.30, 0.68)

107

126.6

0.85 (0.70, 1.02)

210

214.5

0.98 (0.86, 1.12)

102

100.2

1.02 (0.84, 1.24)

Stroke

16

12.4

1.29 (0.79, 2.10)

18

23.0

0.78 (0.49, 1.24)

41

41.0

1.00 (0.74, 1.36)

19

22.5

0.84 (0.54, 1.32)

External causes

180

183.5

0.98 (0.85, 1.13)

130

124.3

1.05 (0.88, 1.24)

102

98.2

1.04 (0.86, 1.26)

28

29.1

0.96 (0.66, 1.39)

Motor vehicle accidents

92

97.1

0.95 (0.77, 1.16)

44

41.9

1.05 (0.78, 1.41)

14

22.3

0.63 (0.37, 1.06)

6

5.9

1.02 (0.46, 2.27)

Suicides

19

35.6

0.53 (0.34, 0.84)

38

40.0

0.95 (0.69, 1.31)

53

40.6

1.30 (1.00, 1.71)

11

11.8

0.93 (0.52, 1.68)

  1. *Observed deaths
  2. †Expected deaths