Table 2

Mean Preference Ratings of Graphical Displays of Risk Information (SD)

Display

Overall

Non-Caucasian

Caucasian

Lower income

Higher income

Lower education

Higher education

(n = 40)

(n = 20)

(n = 20)

(n = 24)

(n = 16)

(n = 9)

(n = 31)


1.

Bar graph

4.0‡(1.0)

3.5(1.1)

4.4 (0.7)

4.0(1.0)

3.9(1.0)

3.4(1.2)

4.1 (0.9)

2.

Line graph

3.1 (0.9)

3.2(0.9)

3.0 (0.9)

3.0(1.0)

3.2(0.8)

2.9(1.1)

3.1 (0.9)

3.

Thermometer

2.6(1.1)

2.7(1.0)

2.5(1.1)

2.6(1.1)

2.6(1.1)

2.4 (0.9)

2.7(1.1)

graph

4.

100 faces

2.4(1.5)

2.6(1.5)

2.2(1.5)

2.8(1.5)

1.8(1.3)

3.3(1.1)

2.1 (1.5)

5.

Survival curves §

2.5(1.1)

2.3(1.1)

2.9(1.0)

2.6(1.2)

2.4 (0.9)

2.6(1.1)

2.5(1.1)


Lower income reflects annual household income below $49,999; higher income reflects annual household income above $50,000. Lower education reflects completion of grades 9–12 or Technical/Vocational school. Higher education reflects 2 or 4 years of college or a post-graduate degree. Wilcoxon signed rank test for difference between bar and line graph ratings (p < 0.001). § Presented to 35 participants (20 non-Caucasian, 15 Caucasians; 22 lower income, 13 higher income; 7 lower education, 28 higher education). Percentages reflect appropriate adjustments.

Fortin et al. BMC Medical Informatics and Decision Making 2001 1:2   doi:10.1186/1472-6947-1-2

Open Data