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. Author manuscript; available in PMC: 2015 May 1.
Published in final edited form as: Int J Med Inform. 2014 Feb 3;83(5):376–384. doi: 10.1016/j.ijmedinf.2014.01.011

Table 1.

Demographics by Message Delivery

Standard (SI, n = 77) Interactive (IPI, n = 74)
Age, yrs 61.6 ± 14.6 62.2 ± 12.1
Gender (F/M) % 42/58 47/53
Race/ethnicity:
 Caucasian 64 (84.2) 59 (80.8)
 African American 9 (11.8) 10 (13.7)
 Other 3 (4.0) 4 (5.5)
Level of Education:
 ≤High school graduate 25 (33.3) 17 (23.3)
 Some college/trade school 20 (26.7) 23 (31.5)
 ≥ Bachelor’s degree 30 (40.0) 33 (45.2)
English as primary language 75 (98.7) 72 (97.3)
Pre-procedure anxiety (0–10 scale) 5.3 ± 3.1 5.4 ± 3.2
REALM (literacy) 63.3 ± 6.8 63.5 ± 8.2
SNS (numeracy) 38.4 ± 8.1 38.7 ± 7.9

Data are mean ± SD and n (%)

REALM = Rapid Estimate of Adult Literacy in Medicine (0–66 scale, where 66 = High literacy). SNS = Subjective Numeracy Score (0–48 scale, where 48 = High numeracy)