Table 4.

Effect of Message Format on Verbatim Understanding by Numeracy and Literacy

	Text	Tables	Pictographs
Number of correct verbatim questions (range 0–7)	5.15 ± 2.1 6 (4, 7)	5.87 ± 1.7 7 (5, 7)*	5.50 ± 1.9 6 (5, 7)
By Numeracy Level:
Low	4.69 ± 2.3 6 (3, 7)	5.58 ± 1.80 6 (5, 7)*	4.85 ± 2.2 6 (3, 7)
High	5.84 ± 1.5 6 (5, 7)†	6.29 ± 1.38 7 (6, 7)†	6.07 ± 1.5 7 (6, 7)†
By Literacy Level:
Low	3.22 ± 1.7 3 (2, 4)	6.00 ± 0.9 7 (5.25, 7)*	4.87 ± 2.1 5 (3, 5)
High	5.52 ± 1.8 6 (4.5, 7)†	6.05 ± 1.4 7 (6, 7)*	5.59 ± 1.9 6 (5, 7)

Data expressed as mean ± SD, median (interquartile range)

^*P< 0.025 vs Text

^†P< 0.05 vs Low numeracy or Low literacy

Low numeracy = 0–35, High numeracy = 36–48 on the Subjective Numeracy Scale

Low Literacy = 0 – 60 (3^rd – 8^th grade equivalence), High Literacy = > 61 (9^th grade equivalence or higher)