Sammendrag
Background CKD is more prevalent in women, but more men receive kidney replacement therapy for kidney failure. This apparent contradiction is not well understood.
Methods We investigated sex differences in the loss of kidney function and whether any sex disparities
could be explained by comorbidity or CKD risk factors. In the Renal Iohexol Clearance Survey (RENIS) in
northern Europe, we recruited 1837 persons (53% women, aged 50–62 years) representative of the general population and without self-reported diabetes, CKD, or cardiovascular disease. Participants’ GFR was
measured by plasma iohexol clearance in 2007–2009 (n51627), 2013–2015 (n51324), and 2018–2020
(n51384). At each study visit, healthy persons were defined as having no major chronic diseases or risk
factors for CKD. We used generalized additive mixed models to assess age- and sex-specific GFR
decline rates.
Results Women had a lower GFR than men at baseline (mean [SD], 90.0 [14.0] versus 98.0 [13.7] ml/min
per 1.73 m2
; P
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