Association of health confidence with hospital length of stay and readmission.

Among 2797 socioeconomically diverse patients who completed the survey (response rate 28.5%), there was an average HCS of 9.19 (SD 2.68, range 0-12). Using linear regression, patients with high HCS (HCS ≥ 9) had a 1.53-day lower LOS (p < .01, 95% confidence interval [CI] [-2.11, -0.95]) than patients with a low HCS (HCS < 9). This association remained when examining individual HCS questions and controlling for covariates. In logistic regression, HCS was not significantly associated with readmission, but the question "I am involved in decisions about me" (adjusted model: odds ratio 0.83; 95% CI [0.71, 0.96]; p = .01) was associated with 90-day readmission.