WHILE OVERALL MORTALITY REMAINS HIGHER AMONG MALES, SEX-SPECIFIC RELATIVE MORTALITY BY INCREASING CKM STAGE IS GREATER AMONG FEMALES

 

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WHILE OVERALL MORTALITY REMAINS HIGHER AMONG MALES, SEX-SPECIFIC RELATIVE MORTALITY BY INCREASING CKM STAGE IS GREATER AMONG FEMALES

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Ana Laura
Licon
Ana Laura Licon alicon@med.umich.edu Universirty of Michigan Internal Medicine, Nephrology Ann Arbor United States *
Rajiv Saran rsaran@med.umich University of Michigan Internal Medicine, Nephrology Ann Arbor United States -
Jennifer Bragg-Gresham jennb@med.umich.edu University of Michigan Internal Medicine, Nephrology Ann Arbor United States -
 
 
 
 
 
 
 
 
 
 
 
 

A recent American Heart Association (AHA) presidential advisory has defined the cardovascular-kidney-metabolic (CKM) sydrome as an adverse and progressive interplay of obesity and key metabolic alterations, chronic kidney disease (CKD) and cardiovascular diseases (CVD). Research has suggested higher mortality rates for women in CKM stage 2 and 3. We sought to examine the relationship between sex and mortality rates with worsening CKM stages.

Using 2001-2020 data from the National Health and Nutrition Examination Survey (NHANES), we categorized US adults (aged ≥20 years) into the five CKM stages: stage 0: no CKM risk factors, stage 1: excess or dysfunctional adiposity (overweight or obesity, abdominal obesity, prediabetes), stage 2: metabolic risk factors and CKD (hypertension, hypertriglyceridemia, diabetes, metabolic syndrome, KDIGO moderate-to-high risk CKD), stage 3: subclinical CVD (10-year PREVENT CVD risk ≥20%), and stage 4: clinical CVD and CKD (diagnosed congestive heart failure, cardiovascular disease, myocardial infarction, coronary heart disease, stroke, KDIGO very high risk CKD). Using a cox proportional hazard model we examined all-cause mortality in CKM stages using sex as a mediator, and adjusting for demographics, income, insurance status, current smoking, and physical activity.

CKM Mortality Table

CKM Mortality Figures

The cox proportional hazards model showed males had a higher HR of mortality (HR: 2.07-5.65) compared to females (HR: 1.0-4.48) at every stage of CKM. However, when we calculate HRs with individual references for each sex, then the mortality is relative to each sex’s baseline (stage 0). In this case, with each increasing stage the mortality among females becomes higher with increasing CKM stage compared to men.


Overall mortality is generally higher for males than females, regardless of what CKM stage they are in. However, with the individual sex strata, women appear to have a steeper rise in mortality risk with rising CKM stage relative to men, and that difference increases with increasing stage of CKM. Underlying biologic reasons for these observations require further investigation.


Kewords