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Table 3 Paired-sample t-test to study differences in accuracy between different displays

From: Numbers, graphs and words – do we really understand the lab test results accessible via the patient portals?

Health condition Mean Information Display T-value df sig
Progesterone 0.642
1.761
verbal Information
Numeric (value)
−4.897 41
45
P < 0.01
Progesterone 0.326
1.67
verbal information
Numeric
−6.615 61
65
P < 0.1
Cholesterol 1.6129
1.3871
Numeric (value)
Numeric (value) + History (table)
1.699 61 P < 0.001
Cholesterol 1.7805
1.00
Numeric (value) + History in line graph)
Numeric (value) + scale + History (table)
5.193 81
81
P < 0.001
Infection .7838
1.9595
Numeric (value) + scale + History (table)
Numeric (value) + History in line graph
−9.866 73
73
P < 0.001
Infection .7838
1.9595
Numeric (value) + History + scale (table)
Numeric (value) + History in line (graph)
   P < 0.001