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Table 1 Distribution of exposure variables in the study population (n = 2931)

From: Prevalence and determinants of differences in cystatin C and creatinine-based estimated glomerular filtration rate in community-dwelling older adults: a cross-sectional study

Categorical variables
  n (%) n missing (%)
Thyroid function   38 (1.3)
Hypothyroid 171 (5.8)  
Hyperthyroid 88 (3.0)  
Euthyroid 2634 (90)  
Smoking   114 (3.9)
Current 474 (16)  
Former 1067 (36)  
Never 1276 (44)  
Sexa  
Male 1295 (44)  
Female 1636 (56)  
Treated for hypertension 849 (29) 26 (0.9)
Diabetes 229 (7.8) 16 (0.5)
Glucocorticoid usea 104 (3.5)
Continuous variables
  mean (SD) n missing (%)
Agea 73.1 (11)
BMI (kg/m2) 26.8 (4.4) 80 (2.7)
CRP (mg/L) 5.1 (10) 180 (6.1)
Mean eGFR (mL/min/1.73 m2) 66 (19) 116 (4.0)
  1. aVariables with theoretically complete data available for all participants