Table 3.
Regression results for the likelihood of a potential missed opportunity.
| Variable | Adjusted Odds Ratio | 95% CI | p-Value |
|---|---|---|---|
| Weekend (visits that occurred on a Saturday or Sunday) | 1.855 | 1.514, 2.273 | <0.001 |
| Female Sex | 0.984 | 0.900, 1.075 | 0.716 |
| Age | |||
| <18 | REF | REF | REF |
| 18–35 | 1.048 | 0.834, 1.316 | 0.689 |
| 36–45 | 1.142 | 0.911, 1.430 | 0.249 |
| 46–55 | 1.169 | 0.941, 1.453 | 0.159 |
| 56–65 | 1.192 | 0.959, 1.480 | 0.113 |
| >65 | 1.279 | 1.010, 1.621 | 0.041 |
| Settings visited | |||
| Outpatient only | REF | REF | REF |
| All three (inpatient, outpatient, and ED) | 0.158 | 0.102, 0.246 | <0.001 |
| ED only | 6.784 | 3.892, 11.823 | <0.001 |
| Inpatient only | 0.129 | 0.111, 0.151 | <0.001 |
| Inpatient and ED | 0.149 | 0.110, 0.202 | <0.001 |
| Inpatient and outpatient | 0.134 | 0.114, 0.158 | <0.001 |
| Outpatient and ED | 2.898 | 1.836, 4.573 | <0.001 |
| Urban vs. not urban | 1.019 | 0.920, 1.129 | 0.715 |
| Asthma prior to change point | 1.161 | 0.983, 1.371 | 0.079 |
| COPD prior to change point | 1.298 | 1.130, 1.491 | <0.001 |
| ILD prior to change point | 1.591 | 0.811, 3.122 | 0.177 |
| HIV prior to index | 0.845 | 0.670, 1.065 | 0.154 |
| Chest CT prior to change point | 1.602 | 1.457, 1.761 | <0.001 |
| Chest X-ray prior to change point | 2.363 | 2.126, 2.625 | <0.001 |
| Respiratory antibiotics between change point and 1 day prior to index | 1.285 | 1.173, 1.408 | <0.001 |
Note: Model was also adjusted for year and month of SSD/index visit. ED = emergency department; COPD = chronic obstructive pulmonary disease; IPD = interstitial pulmonary disease; HIV = human immunodeficiency virus; CT = computerized tomography. Potential missed opportunities are defined as patients with an SSD-related healthcare visit during the diagnostic opportunity window; this may include visits that represent a true missed opportunity (i.e., histoplasmosis is present prior to index diagnosis) and coincidental visits.