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Table 1 Baseline characteristics of the study population

From: Influence of age on the effect of reduced renal function on outcomes in patients with coronary artery disease

Characteristics Age ≤ 59 yrs Age 60 to 69 yrs Age ≥ 70 yrs
No. of patients eGFR < 60 ml/min eGFR ≥60 ml/min eGFR < 60 ml/min eGFR ≥60 ml/min eGFR < 60 ml/min eGFR ≥60 ml/min
  n = 54 n = 863 n = 150 n = 833 n = 303 n = 799
Age, yrs 54.3 ± 4.7 51.4 ± 6.5 65.3 ± 2.7 64.7 ± 2.8 75.6 ± 4.1 74.8 ± 3.8
Gender, female, n (%) 9 (16.7) 84 (9.7) 47 (31.3) 171 (20.5) 106 (35.0) 198 (24.8)
BMI, kg/m2 24.9 ± 3.0 24.7 ± 3.0 24.3 ± 3.5 24.2 ± 3.1 24.0 ± 3.1 23.8 ± 3.5
Medical history
 Pre-hypertension, n (%) 37 (71.2) 360 (41.8) 110 (73.8) 471 (56.6) 218 (72.4) 501 (63.0)
 Pre-diabetes mellitus, n (%) 11 (21.2) 131 (15.2) 48 (32.0) 188 (22.7) 100 (33.2) 204 (25.6)
At admission
 Systolic blood pressure, mm Hg 130.4 ± 29.4 126.1 ± 21.9 134.4 ± 25.0 130.8 ± 22.0 131.2 ± 23.0 133.7 ± 21.4
 Diastolic blood pressure, mm Hg 79.2 ± 20.8 79.0 ± 13.0 77.1 ± 13.7 76.3 ± 11.7 72.2 ± 12.1 74.7 ± 11.8
 Heart rate, beats/min 79.0 ± 19.7 73.7 ± 13.2 77.6 ± 16.7 73.4 ± 13.4 75.1 ± 14.9 73.6 ± 13.8
 Killip classification ≥ II, n (%) 13 (24.1) 68 (7.9) 21 (16.0) 77 (9.2) 59 (19.5) 107 (13.4)
Laboratory values
 eGFR, ml/min/1.73m2 44.8 ± 13.6 93.7 ± 19.3 45.6 ± 13.1 85.5 ± 17.8 46.0 ± 11.7 80.4 ± 15.9
 Blood glucose, mmol/L 8.8 ± 5.1 6.7 ± 2.8 8.1 ± 6.0 7.9 ± 3.0 7.7 ± 3.8 7.0 ± 2.8
 Total cholesterol, mmol/L 3.9 ± 1.4 4.2 ± 1.3 4.1 ± 1.2 4.0 ± 1.1 4.0 ± 1.0 4.0 ± 1.0
Severity of CAD
 Left main artery, n (%) 2 (3.7) 32 (3.7) 10 (6.7) 44 (5.3) 19 (6.3) 54 (6.8)
 Three vessel diseases, n (%) 19 (35.2) 163 (18.9) 57 (38.0) 178 (21.4) 101 (33.3) 245 (30.7)
Diagnosis of ACS, n (%) 34 (63.0) 603 (69.9) 114 (76.0) 617 (74.1) 235 (77.6) 571 (71.5)
Treatment of PCI, n (%) 35 (64.8) 637 (73.8) 89 (59.3) 586 (70.4) 213 (70.3) 549 (68.7)
  1. Data are expressed as means ± SD or counts and percentages, as appropriate
  2. Abbreviations: BMI, body mass index; eGFR, estimated glomerular filtration rate; CAD, coronary artery disease; ACS, acute coronary syndrome; PCI, percutaneous coronary intervention; SD, standard deviation
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