Table 1.

Baseline characteristics of study population according to vascular access type

VariableNOverallFistulaCentral Venous CathetersP Value
Observations, n (%)119 (100)57 (48)62 (52)0.4
Age at baseline, mean±SD11966.6±13.165.5±13.367.7±12.9
Sex, n (%)
 Women48 (40)17 (30)31 (50)0.04
 Men71 (60)40 (70)31 (50)
Race and ethnicity, n (%)
 White Irish94 (79)47 (82)47 (76)0.65
 White British2 (2)2 (3)
 Black British1 (1)1 (2)
 White other2 (2)1 (2)1 (2)
 Other8 (7)3 (5)5 (8)
 Missing12 (10)6 (11)6 (10)
Primary cause of ESKD, n (%)
 Diabetes20 (17)12 (21)8 (13)0.49
 Glomerulonephritis19 (16)11 (19)8 (13)
 Hypertension11 (9)4 (7)7 (11)
 Autosomal dominant polycystic disease11 (9)6 (11)5 (8)
 Hereditary kidney disease1 (1)NA1 (2)
 Other33 (28)12 (21)21 (34)
 Unknown24 (20)12 (21)12 (19)
Comorbid conditions, n (%)
 Hypertension96 (81)44 (77)52 (84)0.49
 Diabetes37 (31)18 (32)19 (31)1
 Cancer37 (31)18 (32)19 (31)1
 Heart failure49 (41)24 (42)25 (40)0.99
 Thyroid disease15 (13)9 (16)6 (10)0.47
 History of stroke/TIA6 (5)5 (9)1 (2)0.17
 COPD5 (4)1 (2)4 (6)0.41
 Peripheral vascular disease13 (11)4 (7)9 (15)0.31
 Coronary artery disease38 (32)22 (39)16 (26)0.19
 Obesity9 (8)3 (5)6 (10)0.57
 Gout22 (18)14 (25)8 (13)0.16
 Hypercholesterolemia28 (24)13 (23)15 (24)1
 Depression8 (7)4 (7)4 (6)1
 Arthritis22 (18)14 (25)8 (13)0.16
 Osteoporosis5 (4)2 (4)3 (5)1
 Current or ex-smoker11 (9)4 (7)7 (11)0.63
Anthropometric data, mean±SD
 Height, cm118166.94±11.54169.05±11.32165.03±11.50.04
 Weight, kg11370.32±16.2370.3±14.270.34±18.080.81
 BMI, kg/m211225.77±6.8625.18±6.7826.32±6.950.2
Laboratory measures, mean±SD
 Hemoglobin, g/dl11810.56±1.6110.55±1.8510.58±1.350.61
 Serum albumin, g/L11932.58±4.2833.07±3.5332.13±4.850.21
 Serum calcium, mmol/L1192.24±0.192.28±0.172.2±0.190.05
 PTH, pg/ml85289.46±194.26306.85±234.35274±151.150.97
 Serum phosphate, mmol/L1191.55±0.581.58±0.681.53±0.470.87
 Urea reduction rate, %11974.67±9.7174.23±11.8475.06±7.30.95
 CRP, mg/L2731.22±62.8740.83±92.8123.53±20.760.18
  • Percentages may not total 100 due to rounding. TIA, transient ischemic attack; COPD, chronic obstructive pulmonary disease; BMI, body mass index; PTH, parathyroid hormone; CRP, C-reactive protein. P<0.05 was accepted as statistically significant.