Skip to main content

Table 2 Percentage of correct answers for each graph comparing demographic groups

From: Communicating projected survival with treatments for chronic kidney disease: patient comprehension and perspectives on visual aids

Correct Answers

 

Pictograph

Histogram

Pie Chart

Kaplan Meier

Overall

143 (81%)

140 (79%)

136 (77%)

122 (69%)

Age > 65

42 (81%)

36 (69%)

38 (73%)

33 (63%)

p value

p 0.5

p 0.008

p 0.05

p 0.5

Gender

 Male

83 (83%)

84 (84%)

77 (77%)

74 (74%)

 Female

60 (78%)

56 (73%)

59 (77%)

49 (63%)

p value

p 0.2

p 0.4

p 0.2

p 0.5

Educational Level

 Primary/Nil

6 (75%)

4 (50%)

2 (25%)

4 (50%)

 High School/College

79 (80%)

77 (78%)

75 (76%)

64 (65%)

 Tertiary

59 (84%)

59 (84%)

59 (84%)

55 (79%)

p value

p 0.09

p 0.008

p 0.08

p 0.9

Ethnicity

 NZ European

69 (84%)

65 (79%)

70 (85%)

69 (84%)

 Pacific

31 (79%)

30 (77%)

23 (59%)

22 (56%)

 Maori

16 (70%)

19 (83%)

16 (70%)

11 (48%)

 Asian

18 (90%)

18 (90%)

16 (80%)

12 (60%)

 Other

9 (69%)

8 (62%)

11(85%)

9 (69%)

p value

p 0.4

p 0.7

p 0.4

p 0.7

Employment

63 (84%)

66 (88%)

62 (82%)

61 (81%)

p value

p 0.7

p 0.4

p 0.6

p 0.2

Cause of CKD

 Diabetes

44 (75%)

46 (78%)

38 (64%)

35 (59%)

 Glomerulonephritis

42 (84%)

39 (78%)

40 (80%)

40 (80%)

 Hypertension

12 (86%)

11 (79%)

11 (79%)

9 (64%)

 Other

30 (83%)

31 (86%)

34 (94%)

28 (78%)

 Unknown

15 (83%)

13 (72%)

13 (72%)

11 (61%)

p value

p 0.7

p 0.3

p 0.4

p 0.9

Diabetes

52 (74%)

55 (79%)

50 (71%)

36 (51%)

p value

p 0.2

p 0.8

p 0.2

p 0.8

On dialysis

27 (71%)

29 (76%)

30 (79%)

24 (63%)

p value

p 0.1

p 0.8

p 0.2

p 0.5

Previous transplant

41 (87%)

40 (85%)

37 (79%)

37 (79%)

p value

p 0.9

p 0.8

p 0.9

p 0.8

  1. Hypothesis tested being that demographic variables would be associated with ability to correctly interpret different types of graph