Table 2.
Multivariable model predicting occurrence of an acute bronchitis subsequent episode
| Hazard Ratio | 95% Confidence Interval | p-value | |
|---|---|---|---|
| Patient characteristics | |||
| Prescribing types | |||
| Prescribed first episode | 1.24 | (1.18 - 1.31) | <0.001 |
| Not prescribed first episode | Reference | ||
| Age at visit, years | 0.77 | (0.75 - 0.79) | <0.001 |
| Sex | |||
| Male | Reference | ||
| Female | 0.93 | (0.89 - 0.98) | 0.004 |
| Asthma diagnosis before initial episode | 1.33 | (1.23 - 1.44) | <0.001 |
| Health plan types | |||
| PPO | Reference | ||
| HMO | 0.92 | (0.87 - 0.99) | 0.02 |
| POS | 1.02 | (0.95 - 1.10) | 0.55 |
| Other | 1.02 | (0.94 - 1.10) | 0.72 |
| Regions | |||
| Northeast | Reference | ||
| Midwest | 1.06 | (0.97 - 1.16) | 0.22 |
| South | 1.26 | (1.16 - 1.36) | <0.001 |
| West | 0.99 | (0.89 - 1.10) | 0.86 |
| Unknown | 1.10 | (0.78 - 1.55) | 0.60 |
| Urban area (MSA) | 0.84 | (0.79 - 0.90) | <0.001 |
| Provider characteristics* | |||
| Provider specialty at first bronchitis visit | |||
| Pediatrician | 1.00 | (0.88 - 1.15) | 0.95 |
| Family medicine | 1.14 | (0.98 - 1.32) | 0.09 |
| ER/Urgent care | 1.01 | (0.83 - 1.23) | 0.94 |
| Other | 1.01 | (0.88 - 1.15) | 0.91 |
| Practice characteristics* | |||
| Location of first bronchitis visit | |||
| Physician office | 0.94 | (0.81 - 1.08) | 0.34 |
| Outpatient hospital | 0.87 | (0.76 - 0.99) | 0.04 |
| ER/Urgent care | 0.80 | (0.68 - 0.93) | 0.004 |
| Inpatient | 1.00 | (0.89 - 1.13) | 0.96 |
| Other | 1.00 | (0.88 - 1.15) | 0.95 |
*
Overlapping, some fall into more than one category