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Gender differences in mortality among statin users aged 80 years or more

Geschlechtsunterschiede in der Mortalität von Statinanwendern im Alter von ≥80 Jahren

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Abstract

Background

Little is known about the prognosis associated with statin therapy and its gender differences in older adults aged ≥80 years.

Objective

To study the mortality and survival associated with statin therapy and their gender differences in older adults aged ≥80 years.

Method

This was a historical prospective study conducted at a tertiary medical center. The medical charts of all older adults aged ≥80 years who had been admitted to a single internal medicine department during 1 year were reviewed. All-cause 3‑year mortality and survival rates following hospital admission in men and in women using statins were investigated.

Results

The final cohort included 216 patients: 122 (56.5%) women, mean age 85.3 ± 3.9 years. Overall, 66 (53.2%) women and 58 (46.8%) men used statins for 3 years or more following hospital admission. During this time 48 (39.3%) women and 48 (51.1%) men died. The all-cause 3‑year mortality rates were significantly lower only in women who had used statins compared with women who had not used statins (24.2% vs. 57.1%; relative risk = 0.2; 95% confidence interval 0.1–0.5; p < 0.0001). The 3‑year cumulative survival rates were significantly higher in women who had used statins as part of primary as well as secondary cardiovascular prevention (p < 0.0001 and p = 0.014, respectively). A Cox regression analysis showed that statin therapy was independently associated with low 3‑year cumulative mortality rates in women (hazard ratio=0.3; 95% confidence interval=0.1–0.6; p = 0.001).

Conclusion

In older adults aged ≥80 years, statin therapy is associated with high 3‑year cumulative survival rates only in women.

Zusammenfassung

Hintergrund

Über die mit einer Statintherapie assoziierte Prognose und die Geschlechtsunterschiede bei älteren Menschen (≥80 Jahre) ist wenig bekannt.

Ziel

Ziel war es, die Mortalitäts- und Überlebensrate sowie die Geschlechtsunterschiede bei einer Statintherapie bei älteren Menschen (≥80 Jahre) zu untersuchen.

Methode

Eine historische prospektive Studie wurde in einem tertiären medizinischen Zentrum durchgeführt. Es erfolgte die Überprüfung der Patientenakten aller älteren Patienten (≥80 Jahre), die im 1. Jahr einer einzelnen Abteilung für Innere Medizin zugewiesen wurden. Die 3‑Jahres-Mortalität jeglicher Ursache und die Überlebensraten nach Krankenhauseinweisung bei Männern und Frauen, die Statine einnahmen, wurden untersucht.

Ergebnisse

In die finale Kohorte wurden 216 Patienten eingeschlossen, davon 122 (56,5%) Frauen (mittleres Alter: 85,3 ± 3,9 Jahre). Insgesamt nahmen 66 (53,2%) Frauen und 58 (46,8%) Männer Statine für 3 Jahre oder länger nach einer Krankenhauseinweisung ein. Während dieser Zeit starben 48 (39,3%) Frauen und 48 (51,1%) Männer. Die 3‑Jahres-Mortalitätsrate jeglicher Ursache war nur bei Frauen, die Statine einnahmen, signifikant geringer als bei Frauen, die keine Statine einnahmen (24,2% vs. 57,1%; relatives Risiko: 0,2; 95% Konfidenzintervall [CI] 0,1–0,5; p < 0.0001). Die kumulative Überlebensrate war signifikant höher bei Frauen, die als Teil der kardiovaskulären Primär- und Sekundärprävention Statine einnahmen (p < 0,0001 bzw. p = 0,014). Eine Cox-Regressionsanalyse zeigte, dass eine Statintherapie unabhängig mit einer geringeren 3‑Jahres-Mortalitätsrate bei Frauen assoziiert war (Hazard-Ratio 0,3; 95% CI 0,1–0,6; p = 0,001).

Schlussfolgerung

Bei älteren Menschen (≥80 Jahre) ist eine Statintherapie nur bei Frauen mit einer hohen kumulativen 3‑Jahres-Überlebensrate assoziiert.

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Correspondence to Dan Justo MD.

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Conflict of interest

D. Justo, M. Tchernichovsky, A. Kremer, E. Joffe, S. Sherman, M. Ioffe and H. Mayan declare that they have no competing interests.

This contribution depicts a historical prospective study which does not interfere with therapy.

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Justo, D., Tchernichovsky, M., Kremer, A. et al. Gender differences in mortality among statin users aged 80 years or more. Z Gerontol Geriat 51, 882–888 (2018). https://doi.org/10.1007/s00391-017-1335-y

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  • DOI: https://doi.org/10.1007/s00391-017-1335-y

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