Table 3
Strength and Predictive Ability of Individual Network Variables
| Variable | Effect, OR | Referent Group | Single Variable AUROC (SE) | p Value |
| Acute bronchitis and bronchiolitis | 2.52 (1.86, 3.36) | 0 | 0.52 (0.04) | 0.013 |
| Acute upper respiratory infections | 1.74 (1.29, 2.30) | 0 | 0.50 (0) | 1 |
| Age | 0.81 (0.04) | 1.22E-15 | ||
| 45–64 | 6.19 (4.87, 7.97) | 18–44 | ||
| 65–74 | 10.78 (8.30, 14.13) | 18–44 | ||
| 75+ | 9.95 (7.32, 13.57) | 18–44 | ||
| Diabetes mellitus | 2.94 (2.09, 4.06) | 0 | 0.51 (0.02) | 0.18 |
| Heart Failure | 4.69 (3.82, 5.75) | 0 | 0.50 (0) | 1 |
| Pneumonia, organism unspecified | 5.79 (4.93, 6.80) | 0 | 0.59 (0.06) | 1.86E-06 |
| Race | 0.50 (0) | 1 | ||
| Asian | 0.66 (0.29, 1.27) | White | ||
| Black | 0.91 (0.72, 1.12) | White | ||
| Hispanic | 0.61 (0.47, 0.77) | White | ||
| Respiratory distress or insufficiency | 5.97 (4.87, 7.30) | 0 | 0.56 (0.05) | 2.59E-08 |
| Sex | 1.74 (1.50, 2.02) | female | 0.53 (0.05) | 0.17 |
| Shortness of breath | 6.34 (5.28, 7.59) | 0 | 0.57 (0.05) | 3.33E-05 |
| Smoking history | 12.67 (8.68, 19.43) | negative | 0.64 (0.01) | 4.34E-05 |
| Viral and chlamydial infections | 1.05 (0.67, 1.58) | 0 | 0.50 (0) | 1 |
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The second column reports odds ratios and 95% confidence intervals in parentheses.
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The referent group refers to that used to compute the odds ratio.
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The fourth column reports the AUROC of the network using the single variable data and corresponding standard errors (SE).
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Fifth column p values correspond to comparison of single variable AUROC to a random classifier.
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The network AUROC using all variables is 0.83 (p = 8.88E-15 compared to random).
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AUROC = Area Under the Receiver Operating Characteristic curve.
