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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