Marginal Effects from the Logistic Regression Models of Follow-Up Visits and Readmissions among the Uninsured Adults with Mental Health Conditions Who Were Enrolled in the Low-Income Health Program in San Diego County from 2012 to 2013, Based on Enrollment and Claims Data
| 15-Day Follow-Up Visit (N = 796) | 30-Day Readmission (N = 251) | |||||
|---|---|---|---|---|---|---|
| Marginal Effect | P value | 95% CI | Marginal Effect | P value | 95% CI | |
| Had 15-day outpatient follow-up visit | — | — | — | −2.5% | .021 | [−0.05, 0.00] |
| (ref. group did not have 15-day follow-up visit) | ||||||
| Use within 6 months prior to index admission | ||||||
| Evaluation and management visits | 5.8% | .000 | [0.04, 0.08] | 0.9% | .054 | [0.00, 0.02] |
| Emergency department visits | 2.6% | .194 | [−0.01, 0.07] | 3.2% | .001 | [0.01, 0.05] |
| Index admission was surgical (ref. group medical) | −5.5% | .059 | [−0.11, 0.00] | −1.0% | .696 | [−0.06, 0.04] |
| Average enrollment (in months) prior to index admission | 0.3% | .069 | [0.00, 0.01] | −0.4% | .000 | [−0.01, 0.00] |
| Severity indicators | ||||||
| Length of stay of index admission in days | 1.2% | .001 | [0.00, 0.02] | 0.5% | .039 | [0.00, 0.01] |
| CDPS risk score | 2.5% | .004 | [0.01, 0.04] | 1.6% | .000 | [0.01, 0.02] |
| Substance abuse | −8.9% | .000 | [−0.12, −0.06] | 4.9% | .007 | [0.01, 0.09] |
| Depression | −0.1% | .606 | [−0.05, 0.03] | 1.1% | .373 | [−0.05, 0.00] |
| Schizophrenia | −4.8% | .173 | [−0.12, 0.02] | 0.8% | .719 | [−0.04, 0.05] |
| Bipolar disorder | 4.8% | .131 | [−0.01, 0.11] | 1.3% | .525 | [−0.03, 0.05] |
| Demographics | ||||||
| Female | 2.3% | .351 | [−0.03, 0.07] | −2.4% | .103 | [−0.05, 0.00] |
| (ref. group male) | ||||||
| Age (ref. group 18 to 34) | ||||||
| 35 to 44 | 12.0% | .000 | [0.07, 0.17] | −0.5% | .789 | [−0.04, 0.03] |
| 45 to 54 | 10.1% | .000 | [0.07, 0.13] | −1.4% | .528 | [−0.06, 0.03] |
| 55 to 65 | 16.5% | .000 | [0.12, 0.21] | −1.4% | .550 | [−0.06, 0.03] |
| Race/ethnicity | ||||||
| (ref. group white) | ||||||
| African American | −10.8% | .007 | [−0.19, −0.03] | −3.0% | .026 | [−0.06, 0.00] |
| Latino | 1.7% | .520 | [−0.03, 0.07] | −0.3% | .857 | [−0.03, 0.03] |
| Asian American | 0.9% | .832 | [−0.07, 0.09] | −6.5% | .015 | [−0.12, −0.01] |
| Other | −5.4% | .735 | [−0.36, 0.26] | 16.1% | .224 | [−0.10, 0.42] |
| Missing | −1.5% | .652 | [−0.08, 0.05] | −0.2% | .913 | [−0.04, 0.04] |
CI, confidential interval. CDPS (Chronic Illness and Disability Payment System) measures severity based on utilization of services with a combination of acute and chronic diagnoses.