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Table 1 Characteristics of study population

From: Objective and subjective sleep disorders in automated peritoneal dialysis

  APD (N = 22) CKD 3b-5 (N = 89) HD (N = 75) p value
Age (years) 37.5 (31.5, 58.3) 51 (42.5, 64.0) 57.5 (46.0, 67.2) 0.001
HD > CKDc
CKD > APDb
HD > APDa
Women 16 (72.7 %) 29 (32.6 %) 25 (33.8 %) 0.002
CKD > APDb
HD > APDb
Whites 11 (50 %) 70 (78.7 %) 45 (60.8 %) 0.006
CKD > HDb
CKD > APDb
High school education 21 (95.5 %) 82 (92.1 %) 63 (85.1 %) <0.001
Employed 9 (40.9 %) 40 (44.9 %) 11 (14.9 %) <0.001
CKD > HDa
APD > HDb
Smoking     0.12
 Current 5 (22.7 %) 13 (14.6 %) 8 (10.8 %)  
 Former 11 (50 %) 28 (31.5 %) 33 (44.6 %)  
 Never 6 (27.3 %) 48 (53.9 %) 33 (44.6 %)  
BMI (kg/m2) 23.8 (22.6, 28.9) 27.6 (25.0, 31.2) 27.2 (23.5, 31.2) 0.14
Waist circumference (cm) 93 (86.1, 112.9) 102 (90.75, 111.5) 105 (94.0, 115.8) 0.3
Neck circumference (cm) 36.5 (33, 39.4) 38 (36.0, 41.5) 40 (37.2, 43.7) 0.003
HD > APDb
Systolic blood pressure (mmHg) 132 (123, 148) 148.3 (132.0, 165.5) 145.7 (126.6, 169.4) 0.03
CKD > APDb
Diastolic blood pressure (mmHg) 90.8 (72.3, 96.5) 83.8 (73.4, 90.1) 78.5 (70.0, 88.9) 0.03
CKD > HDc
APD > HDb
Glucose (mg/dL) 95.3 (86.5, 114.4) 93.7 (985.0, 121) 119 (96.5, 147.2) <0.001
HD > CKDa
HD > APDb
Total number of antihypertensives 1 (1, 2.5) 3 (2, 4) 2 (1, 3) 0.002
CKD > HDb
CKD > APDc
Diabetic nephropathy 3 (13.6 %) 29 (32.6 %) 24 (32 %)  
Hypertension 5 (22.7 %) 15 (16.9 %) 14 (18.7 %)
Glomerulonephritis 8 (36.4 %) 16 (18 %) 11 (14.7 %)
Other or unknown causes 6 (27.3 %) 29 (32.5 %) 26 (34.6 %)
  1. Results are presented as medians and interquartile ranges or as percentages. Numbers in parentheses reflect the 25th and the 75th percentile of the variables. Kruskal-Wallis test was used for the comparison of the distributions along all three study groups. Mann-Whitney U test was performed for all pairwise comparisons
  2. a p < 0.001; b p < 0.01; c p < 0.05 for the pairwise comparisons