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Table 2 Counts of comprehension tasks by category of comprehension rate achieved, respondent status and educational attainment, for the 39 comprehension tasks included in the questionnaire

From: Communicating population health statistics through graphs: a randomised controlled trial of graph design interventions

 

All respondents

Non university-qualified

University-qualified

Comprehension rate

Intervention (No. of tasks)

Control (No. of tasks)

Intervention (No. of tasks)

Control (No. of tasks)

Intervention (No. of tasks)

Control (No. of tasks)

Very low (0% to <20%)

0

1

0

3

0

2

Low (20% to <40%)

1

4

2

7

1

1

Moderate (40% to <60%)

3

9

3

6

1

7

High (60% to <80%)

7

8

13

10

6

11

Very high (above 80%)

28

17

21

13

31

18