Appendix A.

Multivariate Logistic Regression Results for Odds of an Outpatient Follow-Up Visits within 15 days of Discharge from the Index Hospitalization of 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

ResultOdds RatioP valueCI
Length of stay of index admission1.07.002[1.03, 1.12]
Length of stay of index admission–quadratic term1.00.011[1.00, 1.00]
Chronic illness and disability payment system risk score1.11.005[1.03, 1.20]
Female (ref. group male)1.11.347[0.90, 1.37]
Age group (ref. group 18 to 34)
    35 to 441.71.000[1.36, 2.15]
    45 to 541.58.000[1.35, 1.85]
    55 to 652.07.000[1.72, 2.50]
Total duration of enrollment before index admission1.01.071[1.00, 1.03]
Index admission was surgical (ref. group medical)0.79.065[0.61, 1.01]
Number of evaluation and management visits 6 months prior to index admission1.29.000[1.18, 1.40]
Number of emergency department visits six months prior to index admission1.12.196[0.94, 1.34]
Substance abuse0.68.000[0.60, 0.77]
Depression0.96.606[0.81, 1.13]
Schizophrenia0.81.176[0.59, 1.10]
Bipolar disorder1.23.131[0.94, 1.61]
Race (ref. group white)
    African American0.61.007[0.43, 0.87]
    Latino1.07.523[0.86, 1.34]
    Asian American1.04.832[0.73, 1.47]
    Other0.79.742[0.19, 3.21]
    Missing0.94.652[0.71, 1.23]
Constant for outpatient visit model0.250.000[−1.90, −0.87]
  • CI, confidential interval.