Table 1

Mortality rates and CFRD prevalence and incidence for consecutive time intervals

1992−19971998−20022003−2008
Patients seen in a clinic during the interval752702647
Female subjects (%)535353
CFRD prevalence at the end of the interval (%)20 ± 2a30 ± 2b33 ± 2b
CFRD incidence per 100 person-years3.0 ± 0.3a4.0 ± 0.4b2.7 ± 0.3a
CFRD mortality rate per 100 person-years6.7 ± 1.3a5.4 ± 0.9a3.5 ± 0.6b
Patients diagnosed with CFRD during the interval/those who were diagnosed and died within the same interval108/18a102/12a61/2b
Total CF population mortality rate per 100 person-years1.2 ± 0.21.6 ± 0.21.8 ± 0.2
Non-CFRD mortality rate per 100 person-years0.5 ± 0.1a0.6 ± 0.2ab1.0 ± 0.2b
  • Data are means ± SE unless otherwise indicated. a, b Comparisons are between time intervals within each row. Rates that do not share a letter are significantly different (P < 0.05); rates that share a letter are not significantly different. Rows with no letters have no significant differences. During each interval, for all rates there were no significant differences between male and female subjects.