Table 2.

Patient demographics stratified by CKD stage, N = 860a

CharacteristicsNormal kidney function (N = 258)CKD stage 1 (N = 34)CKD stage 2 (N= 122)CKD stage 3a (N= 246)CKD stage 3b (N = 133)CKD stage 4 (N= 67)
Mean age, years (SD)72.6 (6.7)70.6 (4.8)73.6 (7.3)74.5 (6.3)75.7 (7.2)76.3 (7.2)
Female, n (%)158 (61.2)13 (38.2)54 (44.3)132 (53.7)76 (57.1)34 (50.7)
Weight, kg (SD)76.6 (16.9)79.9 (23.4)76.6 (17.2)78.6 (17.2)79.1 (16.5)80.8 (15.1)
Height, cm (SD)167.0 (10.7)169.1 (9.3)166.8 (10.4)166.8 (10.5)167.0 (9.7)167.2 (12.1)
Waist circumference, cm (SD)95.5 (15.3)97.3 (18.5)95.1 (15.4)97.5 (13.7)98.6 (13.3)100.8 (12.7)
Hip circumference, cm (SD)105.8 (11.1)102.4 (10.5)104.1 (9.7)107.0 (9.9)108.4 (11.1)109.2 (11.3)
BMI, kg/m2 (SD)27.4 (5.8)27.6 (6.6)27.7 (7.7)28.4 (9.1)28.3 (5.4)29.3 (8.3)
Ethnicity, n (%)
  White254 (98.4)34 (100.0)120 (98.4)239 (97.2)b132 (99.2)66 (98.5)
  Other4 (1.6)2 (1.6)6 (2.4)1 (0.8)1 (1.5)
  • a One participant with CKD stage 5 not included.

  • b Data missing for one patient. BMI = body mass index. CKD = chronic kidney disease. SD = standard deviation.