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Table 1 The relation between MDKT and sociodemographic and clinical factors

From: Diabetes-related knowledge in diabetic haemodialysis patients: a cross-sectional study from Palestine

Variable Number (%), n = 147 Median scores of MDKT (1st percentile–3rd percentile) P value
Age category
 Age ≤ 60 78 (53.1) 9.0 (8.0–10.0) 0.126 a
 Age > 60 69 (46.9) 10.0 (8.0–11.0)
Gender
 Male 76 (51.7) 10.0 (8.0–11.0) 0.078a
 Female 71 (48.3 ) 9.0 (8.0–10.0)
Body mass index
 Underweight (< 18.5) 1 (0.7) NA 0.528b
 Normal range (18.5–24.9) 38 (25.9) 9.5 (8.0–10.0)
 Preobese (overweight) (25–29.9) 43 (29.3) 10.0 (8.0–11.0)
 Obese (≥ 30) 65 (44.2) 9.0 (8.0–10.0)
Residency
 Village 85 (57.8) 9.0 (8.0–10.0) 0.002b
 City 47 (32) 10.0 (9.0–11.0)  
 Palestinian refugee camp 15 (10.2) 8.0 (7.0–10.0)
Living status
 Live with family 141 (95.9) 9.0 (8.0–10.5.0) 0.062a
 Live alone 6 (4.1) 8.5 (6.8–9.0)
Education level
 No formal education 18 (12.2) 9.0 (7.0–10.0) 0.251b
 Finished Primary school 37 (25.2) 9.0 (8.0–10.0)
 Finished high school 64 (43.5) 9.0 (8.0–11.0)
 College, university or post graduate 28 (19) 10.0 (8.3–11.0)
Marital status
 Single, widow, divorced 29 (19.7) 9.0 (8.0–10.0) 0.527a
 Married 118 (80.3) 9.0 (8.0–11.0)
Occupation
 Unemployed 132 (89.8) 9.0 (8.0–10.0) 0.612a
 Employed 15 (10.2) 9.0 (8.0–11.0)
Household income (month)
 Low (less than 550 US$) 77 (52.4) 9.0 (7.5–10.0) 0.023b
 Moderate (550–1400 US$) 57 (38.8) 10.0 (8.0–10.5)
 High (more than 1400 US$) 13 (8.8) 11.0 (8.0–11.0)
Smoking
 Not smoker 115 (78.2) 9.0 (8.0–10.0) 0.294a
 Smoker 32 (21.8) 10.0 (8.0–11.0)
Duration of dialysis (year)
 Less than 4 years 91 (61.9) 9.0 (8.0–10.0) 0.878a
 4 years or more 56 (38.1) 9.0 (8.0–10.8)
Duration of diabetes (year)
 1–3 years 8 (5.4) 7.5 (7.0–11.3) 0.509b
 4–5 years 3 (2) 8.0 (7.0–NA)
 More than 5 years 136 (92.5) 9.0 (8.0–10.0)
Frequency of dialysis (session/week)
 2 sessions or less 19 (12.9) 9.0 (7.0–11.0) 0.301a
 3 sessions or more 128 (87.1) 9.0 (8.0–10.0)
Treatment hours per session
 Less than 4 hours 125 (85) 9.0 (8.0–10.5) 0.177a
 4 hours or more 22 (15) 9.0 (7.0–10.0)
Kidney transplant
 Yes 3 (2) 9.0 (7.0–NA) 0.967a
 No 144 (98) 9.0 (8.0–10.0)
Total chronic diseases
 None 7 (4.8) 10.0 (9.0–10.0) 0.946b
 One 49 (33.3) 9.0 (8.0–11.0)
 Two 48 (32.7) 9.0 (8.0–10.0)
 Three or more 43 (29.3) 9.0 (8.0–11.0)
Total chronic medications
 Less than 8 95 (64.6) 9.0 (8.0–10.0) 0.719a
 8 or more 52 (35.4) 9.5 (8.0–10.0)
Drugs taking
 Takes drugs alone 95 (64.6) 9.0 (8.0–11.0) 0.235a
 Takes drugs by others 52 (35.4) 9.0 (8.0–10.0)
HbA1c
 Controlled 94 (63.9) 9.0 (8.0–11.0) 0.630a
 Uncontrolled 53 (36.1) 9.0 (8.0–10.0)
  1. US$, US dollars; NA, not available; HbA1c, glycated haemoglobin; MKDT, Michigan Diabetic Knowledge Test
  2. aStatistical significance of differences was calculated by using the Mann–Whitney U test
  3. bStatistical significance of differences was calculated by using the Kruskal–Wallis test