Table 2.
Logistic Regression Models Estimating Limited Health Literacy against the Rapid Estimate of Adult Literacy in Medicine, Revised
| SILS |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model | Demographics Only | Difficulty with Written Information |
Confidence Filling out Medical Forms |
Help Reading Hospital Materials |
BHLS | |||||||||||||||
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| Predictors | OR | 95% CI* |
P value |
OR | 95% CI* |
P value |
OR | 95% CI* |
P value |
OR | 95% CI* |
P value |
OR | 95% CI* |
P value |
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| Age | 0.99 | 0.98 | 1.01 | .34 | 0.99 | 0.97 | 1.01 | .21 | 0.99 | 0.98 | 1.01 | .21 | 0.99 | 0.98 | 1.01 | .32 | 0.99 | 0.97 | 1.01 | .19 |
| Sex (reference = male) | ||||||||||||||||||||
| Female | 0.45 | 0.29 | 0.71 | <.01 | 0.45 | 0.28 | 0.72 | <.01 | 0.45 | 0.28 | 0.70 | <.01 | 0.47 | 0.30 | 0.74 | <.01 | 0.45 | 0.28 | 0.71 | <.01 |
| Race (reference = white) | ||||||||||||||||||||
| Black | 8.25 | 4.89 | 13.90 | <.01 | 8.76 | 5.10 | 15.06 | <.01 | 8.10 | 4.80 | 13.67 | <.01 | 8.25 | 4.87 | 14.00 | <.01 | 8.21 | 4.83 | 13.96 | <.01 |
| Education (reference = high school) | ||||||||||||||||||||
| <High School | 2.57 | 1.36 | 4.84 | <.01 | 1.97 | 1.02 | 3.79 | <.01 | 2.51 | 1.33 | 4.74 | <.01 | 2.22 | 1.17 | 4.24 | .02 | 2.18 | 1.14 | 4.15 | .02 |
| >High School | 0.35 | 0.22 | 0.56 | <.01 | 0.37 | 0.23 | 0.61 | <.01 | 0.37 | 0.23 | 0.59 | <.01 | 0.35 | 0.21 | 0.56 | <.01 | 0.37 | 0.23 | 0.60 | <.01 |
| Difficulty with written information (SILS) (reference = rarely/never) | ||||||||||||||||||||
| Always/often/Sometimes | 3.14 | 1.75 | 5.65 | <.01 | ||||||||||||||||
| Confidence filling out medical forms (SILS) (reference = quite a bit/extremely confident) | ||||||||||||||||||||
| Not at all/a little bit/somewhat | 1.35 | 0.87 | 2.12 | .19 | ||||||||||||||||
| Help reading hospital materials (SILS) (reference = rarely/never) | ||||||||||||||||||||
| Always/often/sometimes | 1.94 | 1.18 | 3.18 | .01 | ||||||||||||||||
| BHLS | 0.88 | 0.81 | 0.96 | <.01 | ||||||||||||||||
| Goodness of fit statistics | ||||||||||||||||||||
| R 2 | 0.342 | 0.375 | 0.346 | 0.357 | 0.361 | |||||||||||||||
| AIC | 505.02 | 491.46 | 505.27 | 500.08 | 498.07 | |||||||||||||||
| AUROC | 0.794 | 0.812 | 0.800 | 0.803 | 0.809 | |||||||||||||||
*
For 95% confidence interval (CI) values, the lower limit is set on the left and the upper limit is on the right.
AIC, Akaike information criterion; AUROC, area under the receiver operator characteristics curve; BHLS, Brief Health Literacy Screen; OR, odds ratio; SILS, Single Item Literacy Screener.