Dialyzing women and men: does it matter? An observational study.
BACKGROUND
Application and consequences of hemodialysis treatment may differ between genders; focusing on these differences may be useful to optimize outcomes.


METHODS
Data from 1 999 648 hemodialysis sessions performed in 10 984 (3316 incident and 7668 prevalent) patients, treated in 55 centers of the European Clinical Database (EuCliD)-Turkey, were analyzed, and various demographic, clinical, biochemical, therapeutic and prognostic parameters were compared.


RESULTS
There were 1905 male and 1411 female incident and 4339 male and 3329 female prevalent patients. For females, the mean age in incident (61.8 ± 14.9 years) and prevalent (58.3 ± 15.2 years) patients was higher than for males (60.2 ± 14.8 and 56.5 ± 14.9 years, respectively) (P < 0.001 for both analyses). Also, body mass index was higher, while the hemoglobin level, and the percentage of interdialytic weight gain and arteriovenous fistula were lower. Serum phosphorus was similar in both genders in incident cases, while it was lower in prevalent female patients. Serum parathyroid hormone levels were lower in incident, but higher in prevalent male cases. Erythropoiesis-stimulating agents and vitamin D preparations were more frequently used in female incident and prevalent patients. Hospitalization was more frequent in prevalent females, while it did not differ significantly in the incident cases. Overall, no significant difference was observed in survival rates at 3 years in both incident and prevalent male and female patients.


CONCLUSIONS
Many parameters differ significantly between female and male dialysis patients. Considering the effects of sex on several parameters may be a valuable approach for achieving better outcomes when formulating treatment strategies in this patient population.
Division of Nephrology, Department of Internal Medicine , Istanbul Medical Faculty , Istanbul , Turkey.
Ayse Serra
AS
Artan
Fresenius Medical Care , Istanbul , Turkey.
Fatih
F
Kircelli
Ege Medical Faculty , Izmir , Turkey.
Ercan
E
Ok
Bakirkoy Dr. Sadi Konuk Education and Research Hospital , Istanbul , Turkey.
Murvet
M
Yilmaz
Ege Medical Faculty , Izmir , Turkey.
Gulay
G
Asci
CEND Consulting , Istanbul , Turkey.
Cengiz
C
Dogan
Division of Nephrology, Department of Internal Medicine , Istanbul Medical Faculty , Istanbul , Turkey.
Ozgur
O
Oto
Fresenius Medical Care , Istanbul , Turkey.
Kutay
K
Gunestepe
Ege Medical Faculty , Izmir , Turkey.
Ali
A
Basci
Division of Nephrology, Department of Internal Medicine , Istanbul Medical Faculty , Istanbul , Turkey.
Mehmet Sukru
MS
Sever
end-stage renal disease; gender; hemodialysis treatment