Table 1

Baseline Characteristics of 1846 HEMO Dialysis Patients, USA, 1995-2000
Factors All Patients (N =1846) Diabetic (N = 823) Non-Diabetic (N = 1023) P-valuea
Age 57.62(14.04) 61.19(11.38) 54.75(15.27) <0.01
Female sex (%) 56.23 63.67 50.24 <0.01
Black race (%) 62.62 64.76 60.90 0.09
BMI 25.46(5.28) 26.86(5.35) 24.35(4.95) <0.01
Years of dialysis‡ 2.16[0.94, 4.68] 1.67[0.81, 3.26] 2.83[1.12, 6.46] <0.01
Residual urine output (%) 12.02 12.94 11.29 0.29
High Kt/V (%) 49.84 49.70 49.95 0.91
High flux (%) 49.89 50.06 49.76 0.90
Access
 Permanent Catheter (%) 5.80 6.80 4.99
 AVF/AVG/Other (%) 94.20 93.20 95.01
Co-morbidity ICED score (%)
 0-1 35.59 22.84 45.85
 2 31.26 33.41 29.52 <0.01
 3 33.15 43.74 24.63
Blood pressure
Systolic 151.02(25.64) 155.92(25.87) 147.08(24.78) <0.01
Diastolic 81.28(15.24) 79.93(15.01) 82.36(15.35) <0.01
Smoking (%)
 Never 50.24 54.20 47.06
 Past 32.39 34.10 31.02
 Current 17.36 11.69 21.92
Calcium (mg/dL) 9.34(0.99) 9.27(0.93) 9.40(1.04) <0.01
Phosphorus (mg/dL) 5.85(1.83) 5.71(1.76) 5.96(1.89) 0.01
Serum Total Cholesterol(mg/dl) 171.39(40.01) 170.20( 40.48) 172.35(39.62) 0.26
Serum albumin(g/dl) 3.63(0.36) 3.55(0.33) 3.68(0.37) <0.01

Abbreviations: BMI, body mass index; AVF, arteriovenous fistula; AVG, Arteriovenous grafts; ICED, Index of Coexistent Disease.

a All P values are two-sided.

If the patient produces ≥200 ml/day of urine, is urea clearance measured from interdialytic urine collection >1.5 ml/min (per 35 L of total urea volume). (0 = no, either produces <200 ml/day or urea clearance ≤ 1.5 ml/min, 1 = yes, 9 = unknown, to be determined during Baseline).

‡ Continuous and skewed variables are summarized in the form of Median [1st Quartile, 3rd Quartile].

Sattar et al.

Sattar et al. BMC Nephrology 2012 13:130   doi:10.1186/1471-2369-13-130

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