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. 2019:23:18-213.
doi: 10.7812/TPP/18-213.

Temporal Trends in Mortality Rates among Kaiser Permanente Southern California Health Plan Enrollees, 2001-2016

Wansu Chen  1 , Janis Yao  1 , Zhi Liang  1 , Fagen Xie  1 , Don McCarthy  1 , Lee Mingsum  2 , Kristi Reynolds  1 , Corinne Koebnick  1 , Steven Jacobsen  1
Affiliations

Temporal Trends in Mortality Rates among Kaiser Permanente Southern California Health Plan Enrollees, 2001-2016

Wansu Chen et al. Perm J. 2019.

Abstract

Background: Temporal analyses of death rates in the US have found a decreasing trend in all-cause and major cause-specific mortality rates.

Objectives: To determine mortality trends in Kaiser Permanente Southern California (KPSC), a large insured population, and whether they differ from those of California and the US.

Methods: Trends in age-adjusted all-cause and cause-specific mortality rates from 2001 to 2016 were determined using data collected in KPSC and those derived through linkage with California State death files and were compared with trends in the US and California. Trends of race/ethnicity-specific all-cause and cause-specific mortality rates were also examined. Average annual percent changes (AAPC) and 95% confidence intervals (CI) were calculated.

Results: From 2001 to 2016, the age-adjusted all-cause mortality rate per 100,000 person-years decreased significantly in KPSC (AAPC = -1.84, 95% CI = -2.95 to -0.71), California (AAPC = -1.60, 95% CI = -2.51 to -0.69) and the US (AAPC = -1.10, 95% CI = -1.78 to -0.42). Rates of 2 major causes of death, cancer and heart disease, also decreased significantly in the 3 populations. Differences in trends of age-adjusted all-cause mortality rates and the top 10 cause-specific mortality rates between KPSC and California or the US were not statistically significant at the 95% level. No significant difference was found in the trends of race/ethnicity-specific, sex-specific, or race/ethnicity- and sex-specific all-cause mortality rates between KPSC and California or the US.

Conclusion: Trends in age-adjusted mortality rates in this insured population were comparable to those of the US and California.

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Conflict of interest statement

Disclosure Statement

The author(s) have no conflicts of interest to disclose.

Figures

Figure 1
Figure 1
Age-adjusted mortality rates by race/ethnicity in Kaiser Permanente Southern California (KPSC), the US, and CA, 2001–2016.
Figure 2
Figure 2
Age-adjusted mortality rates for each of the top 6 causes of death in Kaiser Permanente Southern California (KPSC), the US, and CA, 2001–2016.
Figure 3
Figure 3
Age-adjusted mortality rates by race/ethnicity for each of the top 6 causes of death in Kaiser Permanente Southern California (KPCS), 2001–2016.
See this image and copyright information in PMC

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