. Author manuscript; available in PMC: 2016 Nov 1.

Published in final edited form as: Med Decis Making. 2015 May 7;35(8):937–947. doi: 10.1177/0272989X15584922

Table 4.

Logistic Regression Results for Final Comprehension Model

Variable	Unstandardized b (SE)
Intercept	2.10 (0.21)
Numeracy (score)	0.39 (0.10)
Age (−1 for 18–39, 0 for 40–59, 1 for 59–89)	−0.26 (0.22)
Num. Format (0 for percent, 1 for frequency)	−1.18 (0.39)
Risk Label (0 when absent, 1 when present)	1.00 (0.32)
Numeracy × Num. Format	−0.55 (0.20)

Nagelkerke R²	0.17
X² (df=8)	39.4 (p<0.001)

Note: Significant predictors are in bold for emphasis. As is standard in logistic regression, the b-values indicated the change in log odds of getting the comprehension item correct for each one-unit increase in the predictor.