Table 2 —

Mortality rates and standardized mortality ratios by sex, race, and year at onset (Allegheny County Registry, U.S., 1965–1979, 20+ years follow-up)

Sex
Race
Year at onset
Total
MaleFemaleCaucasianAfrican-American1965–19691970–19741975–1979
Deceased (n)818914426925721170
Mortality rate5716905711,388903577299627
 (95% CI)(447–670)(551–846)  (478–672)(895–2,012)(729–1,094)(440–736)(182–451)(532–728)
SMR3251,041530645677488281519
 (95% CI)(255–398)(832–1,277)(443–623)(416–934)  (546–821)  (372–622)(171–424)(440–602)
Deceased (n) at 20 years duration of diabetes354067833271575
Mortality rate at 20 years  duration of diabetes310389335508457345229347
 (95% CI)(210–422)(282–522)  (217–360)(207–948)  (318–627)  (225–487)(124–363)(253–459)
SMR at 20 years duration  of diabetes222776387327492367235367.0
 (95% CI)(151–303)(562–1,042)(251–416)(133–610)  (342–676)  (239–519)(127–372)(267–484)
  • 95% CIs according to the Poisson distribution are given in the parentheses. Mortality rate of African-Americans is significantly higher than that of Caucasians (P < 0.05). At 20 years duration of diabetes, the time trend in mortality rates was significant (P = 0.01).