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Table 3 Mean age at death for retired military personnel (RMPs) and their reference populations, stratified by gender and birth cohort

From: Relative longevity among retired military personnel: a historical-cohort study

Birth cohort

RMPs

Reference

Δ

95%CI

P value*

Mean (SD)

n

Mean (SD)

n

Male

1900–1909

77.88 (10.07)

127

79.91 (10.57)

115951

−2.03

−3.874– −0.186

0.0305

1910–1919

78.28 (10.85)

583

76.52 (11.48)

137,389

1.76

0.824–2.696

<0.001

1920–1929

74.12 (10.08)

1526

73.16 (11.61)

129,948

0.96

0.374–1.547

0.001

1930–1939

67.32 (8.68)

871

65.35 (11.88)

71,343

1.97

1.177–2.763

<0.001

1940–1949

58.47 (7.02)

777

53.99 (13.09)

37,372

4.48

3.555–5.405

<0.001

1950–1959

52.47 (5.31)

382

44.91 (12.00)

23,347

7.56

6.352–8.768

<0.001

1960–1969

46.97 (3.65)

35

36.56 (9.16)

9,056

10.41

7.367–13.453

<0.001

Female

1900–1909

94.75 (5.91)

4

79.32 (10.63)

110373

15.43

4.987–25.873

0.004

1910–1919

89.06 (5.56)

88

79.13 (11.46)

149,155

9.93

7.530–12.330

<0.001

1920–1929

81.14 (5.94)

222

75.60 (10.96)

127,871

5.54

4.094–6.986

<0.001

1930–1939

73.70 (5.34)

127

67.02 (11.13)

54,062

6.68

4.739–8.621

<0.001

1940–1949

60.50 (5.45)

62

54.12 (12.00)

23,077

6.38

3.385–9.375

<0.001

1950–1959

53.38 (4.05)

32

47.48 (10.05)

13,330

5.90

2.409–9.391

<0.001

1960–1969

-

0

38.35 (8.42)

4,687

-

-

-

  1. Δ = Difference between the means
  2. *Independent samples t-test