Table 1

General characteristics of the BELFRAIL population at baseline (n = 539), based on eGFR values at study entry, as estimated by different equations
All MDRD <60 mL/min CKD-EPIcreat <60 mL/min CKD-EPIcyst <60 mL/min CKD-EPIcreatcyst <60 mL/min BIS <60 mL/min
(n = 539) (n = 237, 44%) (n = 244, 45%) (n = 405, 75%) (n = 247, 46%) (n = 431, 80%)
Mean age 84.7 85.6a 85.7a 85.0a 84.7 84.7
(SD 3.6) (SD 4.0) (SD 4.0) (SD 3.8) (SD 3.7) (SD 3.7)
Male gender (%) 37 37 35 40 37 37
Hypertension (%) 70 73 79a 73 71 73
Diabetes mellitus (%) 19 20 21 19 19 20
History of myocardial infusion (%) 11 13 12 13 11 13
History of cerebrovascular accident (%) 8 9 8 9 9 9
History of peripheral arterial disease (%) 9 9 12 10 9 9
Smoker (%) 3 3 3 3 3 4

aP <0.05 compared with the subgroup of participants with eGFR >60 mL/min/1.73 m2. SD, standard deviation.

Van Pottelbergh et al.

Van Pottelbergh et al. BMC Medicine 2014 12:27   doi:10.1186/1741-7015-12-27

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