Table 4. Association of Overall COI Level With Unplanned Health Care Use After Discharge.
| Variable | ED visit and 30-d readmissions, OR (95% CI) | |
|---|---|---|
| Simple appendicitis | Complicated appendicitis | |
| COI level | ||
| Very low | 1.01 (0.90-1.14) | 0.98 (0.88-1.09) |
| Low | 0.91 (0.81-1.02) | 0.91 (0.82-1.01) |
| Moderate | 0.99 (0.89-1.11) | 0.94 (0.85-1.05) |
| High | 1.01 (0.91-1.13) | 0.92 (0.83-1.02) |
| Very high | 1 [Reference] | 1 [Reference] |
| Sex | ||
| Female | 1.10 (1.03-1.18) | 1.02 (0.96-1.09) |
| Male | 1 [Reference] | 1 [Reference] |
| Age, y | ||
| 0-4 | 1.58 (1.34-1.85) | 1.40 (1.24-1.57) |
| 5-9 | 1.06 (0.96-1.17) | 1.12 (1.00-1.22) |
| 10-14 | 0.97 (0.88-1.06) | 1.06 (0.96-1.17) |
| ≥15 | 1 [Reference] | 1 [Reference] |
| Race/ethnicity | ||
| Asian | 0.89 (0.69-1.14) | 1.16 (0.96-1.41) |
| Hispanic | 1.21 (1.09-1.33) | 1.11 (1.02-1.22) |
| Non-Hispanic, Black | 1.24 (1.07-1.43) | 1.13 (0.99-1.29) |
| Non-Hispanic, White | 1 [Reference] | 1 [Reference] |
| Othera | 0.93 (0.82-1.05) | 0.86 (0.77-0.96) |
| Complex chronic condition | ||
| Yes | 4.0 (3.56-4.44) | 1.83 (1.63-2.06) |
| No | 1 [Reference] | 1 [Reference] |
| Insurance | ||
| Public (Medicaid/CHIP) | 1.23 (1.13-1.33) | 1.03 (0.95-1.11) |
| Other | 0.98 (0.85-1.13) | 0.85 (0.76-0.97) |
| Private | 1 [Reference] | 1 [Reference] |
Abbreviations: CHIP, Children’s Health Insurance Program; COI, Child Opportunity Index; OR, odds ratio.
a
Includes Native Hawaiian/Pacific Islander, American Indian, and Alaskan Native.