Table 3. Negative binomial regression model for the count of outpatient portal sessions in the 6 months following discharge from the medical center as a function of patient health literacy and numeracy.
| OPP frequency of use a |
||
|---|---|---|
| Variable | IRR | 95% CI |
| I feel uncomfortable with health information that has a lot of numbers | ||
| Strongly agree to neutral | – | – |
| Somewhat to strongly disagree | 0.96 | 0.71, 1.30 |
| I depend on numbers and statistics to help me make decisions about my health | ||
| Strongly disagree to neutral | – | – |
| Somewhat to strongly agree | 0.79 | 0.58, 1.08 |
| I know how to take my medications | ||
| Strongly disagree to neutral | – | – |
| Somewhat to strongly agree | 1.13 | 0.54, 2.20 |
| I can fill out medical forms | ||
| Strongly disagree to neutral | – | – |
| Somewhat to strongly agree | 0.56 b | 0.31, 0.98 |
| I frequently have someone help me read hospital material | ||
| Strongly agree to neutral | – | – |
| Somewhat to strongly disagree | 0.94 | 0.67, 1.32 |
| I frequently have difficulty using written health information | ||
| Strongly agree to neutral | – | – |
| Somewhat to strongly disagree | 1.02 | 0.67, 1.52 |
| No. Obs. | 654 | |
Abbreviations: CI, confidence interval; IRR, incidence rate ratio; OPP, outpatient portal.
a
Coefficients adjusted for previous OPP frequency of use and patient demographics characteristics.
b
p < 0.05.